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PTCS Project Planning Page
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This page is intended to be the top-level page providing an overview, and links to work related to continued PTCS improvements in the areas of servo performance, pointing accuracy, collimation and small-scale surface errors.
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PTCS Project Plan
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This is intended to be the top-level page providing an overview, and links to work related to continued PTCS development. We are going to start working at a low level to improve pointing and collimation, as well as static measurements and corrections to small-scale surface accuracy.
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- Short-Term Pointing Analysis Package (Todd)
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Table of Contents:
- Pointing model and azimuth track analysis (Todd)
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- Holography projects (Todd)
- OOF holography improvements
- Traditional holography system and strategy
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- (Possibly Develop and deploy traditional holography system (existing or new during summer shutdwon, depending on investigations by Todd)
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- Develop and deploy traditional holography system
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This task is to complete design and implementation of a new analysis package for a new pointing model.
Coordinate and perform commissioning and characterization observations
This task is to improve the performance of the GBT's servos. It includes short- and long-term improvements
This task is to replace the interlock system on the GBT with a PLC-based system for better maintainability. It is now under the Servo Improvements project.
This task is to rebuild interface to the existing backend to support higher data rate transfers, perform lab tests on the holo receiver and redeploy it. Also perform simulations and re-examine old data.
This task is to coordinate efforts on doing OOF measurements on the GBT
Coordinate the Laser Rangefinder System developments
Coordinate development of other miscellaneous PTCS instruments such as tippers, interferometers, etc. |
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- Bring someone up to speed on generating pointing models, incorporate new techniques (e.g. inclinometer measurements of track) - see PointingFocusDevelopmentFall2006
- Confirm Kim is now responsible for processing inclinometry data
- assume new analysis package is matlab for now, may reassess later.
* Need to significantly re-engineer the antenna manager to do correct upstream co-ordinate conversions including both the actual subreflector position and the quadrant detector indications (any other indications. Do we do this now, or after some big system redesign?
- co-ordinate execution of pointing runs, servo tests, etc.
- Need to get wiki commissioning history up to date
- Need to really check the quality of our mapping. Make a fully sampled beam map of a Condon double, after peaking up on a calibrator say five degrees away. Check how well the observed J2000 positions of both doubles match predicted. I think this is quite a high priority task; to my knowledge GBT staff have never really checked this. Write up as a project note.
- Servo investigations and improvements
- Trajectory generation
- Begin investigation on why smooth trajectory does not translate into smooth antenna motion. Requires Ford, Brandt, Hunter, Weadon
- Tracking at low azimuth rates
- Finish this off by 2/28/07 Requires Ford, Brandt, Hunter, Weadon
- Start a new servo system design
- I think that we do need to redesign the servo. We can pull information from the LMT, 70m DSN, and other sources. This requires Ford, Brandt, Weadon, Hunter, and some outside help.
- Begin working on planning for work for track shutdown period (servo/controls upgrade)
- Design well underway, pre-shutdown construction already planned
- Ford and Weadon (mostly Weadon) need to coordinate shutdown work with Norrod and Anderson
- Investigate measurements and adjustments for small-scale surface errors.
- Need to process moon and calibrator beam cuts to characterize length scales of surface errors
- We need to ask/work with Fred Schwab to compare the amplitude profiles from the old traditional holography data with the expected beam profile of the GBT with a 350um rms (random) surface. This is to see if the S/N was close to what would be necessary to see the effect at this level. I've asked him to pull out his old notes on this in anticipation of further work along these lines.
- Investigate the holography possibilities (Todd?)
-
- do background research on existing system
- need to do some quick S/N calculations just to ensure this is worthwhile
- could ressurect old system but would need to solve ease-of-use issues
- decide whether to stick with old system or switch to new system early in summer shutdown
- need to confirm useful adjustment can be made (actuators versus relative panel at corners)
OOF holography system (Richard)
- Bring someone up to speed on OOF models; start incorporating new techniques including JWST Wavefront Sensing and Controls Group collaboration - see OOFDevelopmentFall2006
- Need to get moving on Goddard OOF collaboration
- Need to test (or complete) Bojan's script pathway for analyzing Ka-band OOF scans into surface maps
LRF system (instrument development and system architecture) (Steve)
-
- Investigate the constellation required for LRF to work. (F. Schwab?)
- instrument development
- surface measurement system
- pointing (elevation axle pose) system
- Someone to host and provide info to FAST team in March - John
- Need to respond to Paul Goldsmith similar request - John
- Simon Radford told me he could put me in touch with the JPL laser-ranging folks if we so desire.
- In general, need someone to be the spokesperson for future rangefinder work. - John
- Need to come up with a system architecture for future use of rangefinders - any use at all? Should have a brainstorming session with a wide variety of attendees.
- Rangefinder patent.
Ancillary PTCS instrumentation (Todd)
- Investigate instrumentation for wind measurements.
- We should wait for Kim's analysis to proceed a bit further before going off with this task.
- Have Jason/JD install pyrgeometer and compare to Operator's cloud cover log (Todd)
- Misc instrument work:
- Tipper
- Phase Interferometer
- Pyrgeometer
- Optical pointing camera
- What else...
- Need to follow up on the effects seen by Todd, e.g. the inclinometer "wiggles" during beamswitches
- Follow up on "hysteresis"
- More generally, need to track down and fix all causes of tracking error Perhaps as a first step, we should try to implement a quantitative number (derived from QD,inclinometers,accelerometers) that expresses the overall level of vibration in real-time to the observer or operator screen.
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This task is to complete design and implementation of a new analysis package for a new pointing model.
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>
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Coordinate and perform commissioning and characterization observations
This task is to improve the performance of the GBT's servos. It includes short- and long-term improvements
This task is to replace the interlock system on the GBT with a PLC-based system for better maintainability.
This task is to investigate and implement, if appropriate, a traditional Holography system for the GBT surface measurement.
This task is to coordinate efforts on doing OOF measurements on the GBT
Coordinate the Laser Rangefinder System developments
Coordinate development of other miscellaneous PTCS instruments such as tippers, interferometers, etc.
Coordinate the efforts to measure the surface with photogrammetry |
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We (John, Todd, Richard) will add timescales before January 30th project meeting
Plan for a PTCS project group meeting week starting February 12th
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- We should have a mini In-Progress Review (when?) to review this plan with the wider project group, and perhaps a few knowledeable outsiders. This should be rather informal however.
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We should have a mini In-Progress Review (when?) to review this plan with the wider project group, and perhaps a few knowledeable outsiders. This should be rather informal however.
Work packages:
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- I (RMP) think we should re-define our work packages, and start one wiki page per work package, with a clearly defined group leader for each one, who is responsible for keeping it up to date. Packages might be:
- Antenna characterization and commissioning (name...)
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- New Pointing Analysis Package (Todd)
- Antenna characterization and commissioning (Frank)
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- Servo Improvements
- Interlock upgrade
- New holography system
- LRF system (instrument development and system architecture)
- Ancillary metrology instrumentation
- Anything else?
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- Servo Improvements (John)
- Interlock upgrade (John)
- Holography system (Todd)
- LRF system (instrument development and system architecture) (Steve)
- instrument development
- surface measurement system
- pointing (elevation axle pose) system
- Ancillary PTCS instrumentation (Todd)
- Tipper
- Phase Interferometer
- Pyrgeometer
- Optical pointing camera
- What else...
- Photogrammetry (John)
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- Intermediate goal (Winter 2008/09) is to provide usable performance at 86 GHz for the Penn Array (the fully-sampled array receiver has less stringent pointing/tracking requirements than a single-pixel heterodyne receiver)
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- Intermediate goal (Winter 2008/09) is to provide usable performance at 86 GHz for the Penn Array (the fully-sampled array receiver has less stringent pointing/tracking requirements than a single-pixel heterodyne receiver) - see MustangEngSpecs
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- Develop and deploy new traditional holography system by August 2007? Is this even conceivable?
- In my (RMPs) opinion, system architecture of LRF V2 should be lower priority for now.
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- Characterize surface error length scales via moon or bright calibrator scans.
- (Possibly Develop and deploy traditional holography system (existing or new during summer shutdwon, depending on investigations by Todd)
- LRF Investigations:
- Steve to find "knee in the curve" of current rangefinger performance (early spring)
- Brainstorm potential surface measurement configurations
- have Fred Schwab convert these to specific performance requirements
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The tasks from last year linger on! We are making progress on them, but they have yet to come to fruition.
- Maintain PTCS Instrumentation in state of readiness: active surface, temperature sensors (structural and air), weather stations.
- Begin design and development work on Elevation Axle Pose measurement system
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>
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- Bring someone up to speed on generating pointing models, incorporate new techniques (e.g. inclinometer measurements of track) - see PointingFocusDevelopmentFall2006
- Confirm Kim is now responsible for processing inclinometry data
- assume new analysis package is matlab for now, may reassess later.
* Need to significantly re-engineer the antenna manager to do correct upstream co-ordinate conversions including both the actual subreflector position and the quadrant detector indications (any other indications. Do we do this now, or after some big system redesign?
- co-ordinate execution of pointing runs, servo tests, etc.
- Need to get wiki commissioning history up to date
- Need to really check the quality of our mapping. Make a fully sampled beam map of a Condon double, after peaking up on a calibrator say five degrees away. Check how well the observed J2000 positions of both doubles match predicted. I think this is quite a high priority task; to my knowledge GBT staff have never really checked this. Write up as a project note.
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- Begin investigation on why this does not work. Requires Ford, Brandt, Hunter, Weadon
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-
-
- Begin investigation on why smooth trajectory does not translate into smooth antenna motion. Requires Ford, Brandt, Hunter, Weadon
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| Changed: |
<
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- Bring someone up to speed on generating pointing models, incorporate new techniques (e.g. inclinometer measurements of track) - see PointingFocusDevelopmentFall2006
- Bring someone up to speed on OOF models; start incorporating new techniques including JWST Wavefront Sensing and Controls Group collaboration - see OOFDevelopmentFall2006
- Investigate measurements and adjustments for small-scale surface errors.
- Investigate the constellation required for LRF to work. (F. Schwab?)
- Investigate the holography possibilities (Todd?)
- Investigate the photogrammetry possibilities. (F. Schwab?)
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>
> |
|
| Added: |
>
> |
- Investigate measurements and adjustments for small-scale surface errors.
- Need to process moon and calibrator beam cuts to characterize length scales of surface errors
- We need to ask/work with Fred Schwab to compare the amplitude profiles from the old traditional holography data with the expected beam profile of the GBT with a 350um rms (random) surface. This is to see if the S/N was close to what would be necessary to see the effect at this level. I've asked him to pull out his old notes on this in anticipation of further work along these lines.
- Investigate the holography possibilities (Todd?)
-
- do background research on existing system
- need to do some quick S/N calculations just to ensure this is worthwhile
- could ressurect old system but would need to solve ease-of-use issues
- decide whether to stick with old system or switch to new system early in summer shutdown
- need to confirm useful adjustment can be made (actuators versus relative panel at corners)
OOF holography system (Richard)
- Bring someone up to speed on OOF models; start incorporating new techniques including JWST Wavefront Sensing and Controls Group collaboration - see OOFDevelopmentFall2006
- Need to get moving on Goddard OOF collaboration
- Need to test (or complete) Bojan's script pathway for analyzing Ka-band OOF scans into surface maps
LRF system (instrument development and system architecture) (Steve)
-
- Investigate the constellation required for LRF to work. (F. Schwab?)
- instrument development
- surface measurement system
- pointing (elevation axle pose) system
- Someone to host and provide info to FAST team in March - John
- Need to respond to Paul Goldsmith similar request - John
- Simon Radford told me he could put me in touch with the JPL laser-ranging folks if we so desire.
- In general, need someone to be the spokesperson for future rangefinder work. - John
- Need to come up with a system architecture for future use of rangefinders - any use at all? Should have a brainstorming session with a wide variety of attendees.
- Rangefinder patent.
Ancillary PTCS instrumentation (Todd)
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| Added: |
>
> |
- Have Jason/JD install pyrgeometer and compare to Operator's cloud cover log (Todd)
- Misc instrument work:
- Tipper
- Phase Interferometer
- Pyrgeometer
- Optical pointing camera
- What else...
- Need to follow up on the effects seen by Todd, e.g. the inclinometer "wiggles" during beamswitches
- Follow up on "hysteresis"
- More generally, need to track down and fix all causes of tracking error Perhaps as a first step, we should try to implement a quantitative number (derived from QD,inclinometers,accelerometers) that expresses the overall level of vibration in real-time to the observer or operator screen.
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| Changed: |
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I'll get them down here first, then we can move them to the correct place
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Capture thoughts here, then we can transfer them to the appropriate place.
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| Deleted: |
<
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- Need "real-time" OOF for quick compensation of thermal surface deformations; compliments whatever small-scale technique we come up with
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| Changed: |
<
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- Need to process moon and calibrator beam cuts to characterize length scales of surface errors
- Aim to have a new holography system in place to do measurements in August/September, when we might have lots of telescope time. Is this realistic?
- Need to get moving on Goddard OOF collaboration
- Someone to host and provide info to FAST team in March
- Need to respond to Paul Goldsmith similar request
- In general, need someone to be the spokesperson for future rangefinder work.
- Need to come up with a system architecture for future use of rangefinders - any use at all? Should have a brainstorming session with a wide variety of attendees.
- Rangefinder patent.
- Need to complete current servo upgrades, and convert them to production use
- Need to follow up on the effects seen by Todd, e.g. the inclinometer "wiggles" during beamswitches
- Follow up on "hysteresis"
- More generally, need to track down and fix all causes of tracking error
- Is drift-scan pointing worth following up on? I think it is, but we should make sure.
- Do normal peaks to get us close
- Explore az and el independently (easier to find sources that way)
- start with az at transit, so it is also RA.
- write a routine which will allow the antenna to scan in the direction of sidereal motion (could use PySlalib?)
- run "drift scan" peaks in that direction, and "scanning" peaks in that direction. Simply look for offsets in time from when peak signal is seen - essentially an RA offset.
- interleave drift scan peaks and tracking peaks in succession as a source transits, to look for repeatability
- if we find an error in azimuth (e.g. a timing error), correct the same effect in elevation.
- Need to significantly re-engineer the antenna manager to do correct upstream co-ordinate conversions including both the actual subreflector position and the quadrant detector indications (any other indications. Do we do this now, or after some big system redesign?
- Need to really check the quality of our mapping. Make a fully sampled beam map of a Condon double, after peaking up on a calibrator say five degrees away. Check how well the observed J2000 positions of both doubles match predicted. I think this is quite a high priority task; to my knowledge GBT staff have never really checked this. Write up as a project note.
- Need to finally come off the fence and ressurrect or abandon tipper, phase interferometer, prygeometer or modern equivalents thereof. Need to consult with an "atmospheric monitoring expert"? Is Todd one? Simon Radford?
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- Who will/will we present at URSI?
- Kim (Pointing)
- John (servo)
- Ron/Roger (baselines)
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| Deleted: |
<
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- Need to test (or complete) Bojan's script pathway for analyzing Ka-band OOF scans into surface maps
- We need to ask/work with Fred Schwab to compare the amplitude profiles from the old traditional holography data with the expected beam profile of the GBT with a 350um rms (random) surface. This is to see if the S/N was close to what would be necessary to see the effect at this level. I've asked him to pull out his old notes on this in anticipation of further work along these lines.
- During high-frequency observations, we should consider requiring a delay before starting the first scan after slewing to a pointing source to let mechanical oscillations settle. Perhaps as a first step, we should try to implement a quantitative number (derived from QD,inclinometers,accelerometers) that expresses the overall level of vibration in real-time to the observer or operator screen.
- Need to decide on the mathematical package/infrastructure that will be used to implement Kim's final model at Green Bank. Matlab? Mathematica? Python(Numeric)?
- Simon Radford told me he could put me in touch with the JPL laser-ranging folks if we so desire.
- He believes traditional holo at ~12GHz cannot reach the desired level for CCAT, which wants 10um rms and would require ~3um measurement precision (1 part in 10000, or 0.036 degree phase). But from what I can tell, he has not done a full S/N calculation.
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>
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- We should have a mini In-Progress Review (when?) to review this plan with the wider project group, and perhaps a few knowledeable outsiders. This should be rather informal however.
- I (RMP) think we should re-define our work packages, and start one wiki page per work package, with a clearly defined group leader for each one, who is responsible for keeping it up to date. Packages might be:
- Antenna characterization and commissioning (name...)
- pointing model
- OOF holography
- tracking effects / improvements
- Servo Improvements
- Interlock upgrade
- New holography system
- LRF system (instrument development and system architecture)
- Ancillary metrology instrumentation
- Anything else?
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>
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- See Refined Scientific Requirements for the PTCS by Jim Condon, and especially table 1.
- Ultimate goal (Winter 2010/11) is to provide acceptable performance at 115 GHz.
- Intermediate goal (Winter 2008/09) is to provide usable performance at 86 GHz for the Penn Array (the fully-sampled array receiver has less stringent pointing/tracking requirements than a single-pixel heterodyne receiver)
- Near-term goal (Winter 2007/08) is to provide good performance at Q-band (52GHz), and explicitly to widen as much as possible then environmental envelope within which this performance can be delivered.
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- Complete campaign of antenna characterization commissioning exercises
- Develop and deploy new traditional holography system by August 2007? Is this even conceivable?
- In my (RMPs) opinion, system architecture of LRF V2 should be lower priority for now.
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| Added: |
>
> |
I'll get them down here first, then we can move them to the correct place
- Need "real-time" OOF for quick compensation of thermal surface deformations; compliments whatever small-scale technique we come up with
- Email Simon Radford to consider OOF for CCAT
- Need to process moon and calibrator beam cuts to characterize length scales of surface errors
- Aim to have a new holography system in place to do measurements in August/September, when we might have lots of telescope time. Is this realistic?
- Need to get moving on Goddard OOF collaboration
- Someone to host and provide info to FAST team in March
- Need to respond to Paul Goldsmith similar request
- In general, need someone to be the spokesperson for future rangefinder work.
- Need to come up with a system architecture for future use of rangefinders - any use at all? Should have a brainstorming session with a wide variety of attendees.
- Rangefinder patent.
- Need to complete current servo upgrades, and convert them to production use
- Need to follow up on the effects seen by Todd, e.g. the inclinometer "wiggles" during beamswitches
- Follow up on "hysteresis"
- More generally, need to track down and fix all causes of tracking error
- Is drift-scan pointing worth following up on? I think it is, but we should make sure.
- Do normal peaks to get us close
- Explore az and el independently (easier to find sources that way)
- start with az at transit, so it is also RA.
- write a routine which will allow the antenna to scan in the direction of sidereal motion (could use PySlalib?)
- run "drift scan" peaks in that direction, and "scanning" peaks in that direction. Simply look for offsets in time from when peak signal is seen - essentially an RA offset.
- interleave drift scan peaks and tracking peaks in succession as a source transits, to look for repeatability
- if we find an error in azimuth (e.g. a timing error), correct the same effect in elevation.
- Need to significantly re-engineer the antenna manager to do correct upstream co-ordinate conversions including both the actual subreflector position and the quadrant detector indications (any other indications. Do we do this now, or after some big system redesign?
- Need to really check the quality of our mapping. Make a fully sampled beam map of a Condon double, after peaking up on a calibrator say five degrees away. Check how well the observed J2000 positions of both doubles match predicted. I think this is quite a high priority task; to my knowledge GBT staff have never really checked this. Write up as a project note.
- Need to finally come off the fence and ressurrect or abandon tipper, phase interferometer, prygeometer or modern equivalents thereof. Need to consult with an "atmospheric monitoring expert"? Is Todd one? Simon Radford?
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This spring will be used to get the project started back up. This process includes revisiting the project notes and other documentation, getting the project team together, and embarking on an initial course of action. Some specific items to start working on are detailed below in the task list.
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We have several projects in the works.
- Improved pointing models incorporating explicit track measurements via inclinometers.
- Servo improvements
- Servo interlock system ( not strictly PTCS, but the same group of people are working on it
- LRF Version 2 work
- Data processing supporting new pointing models.
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- Work on LRF originally slated to be used here is ongoing
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- It seems that the trajectory generation is not the problem. Rather, the response of the servo to the trajectory is poor.
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- Friction Compensation seems to drastically improve this. We are continuing to test this.
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| Added: |
>
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| Added: |
>
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The tasks from last year linger on! We are making progress on them, but they have yet to come to fruition.
- Maintain PTCS Instrumentation in state of readiness: active surface, temperature sensors (structural and air), weather stations.
- Begin design and development work on Elevation Axle Pose measurement system
- Servo investigations and improvements
- Trajectory generation
- Begin investigation on why this does not work. Requires Ford, Brandt, Hunter, Weadon
- Tracking at low azimuth rates
- Finish this off by 2/28/07 Requires Ford, Brandt, Hunter, Weadon
- Start a new servo system design
- I think that we do need to redesign the servo. We can pull information from the LMT, 70m DSN, and other sources. This requires Ford, Brandt, Weadon, Hunter, and some outside help.
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| Added: |
>
> |
- Bring someone up to speed on generating pointing models, incorporate new techniques (e.g. inclinometer measurements of track) - see PointingFocusDevelopmentFall2006
- Bring someone up to speed on OOF models; start incorporating new techniques including JWST Wavefront Sensing and Controls Group collaboration - see OOFDevelopmentFall2006
- Investigate measurements and adjustments for small-scale surface errors.
- Investigate the constellation required for LRF to work. (F. Schwab?)
- Investigate the holography possibilities (Todd?)
- Investigate the photogrammetry possibilities. (F. Schwab?)
- Begin working on planning for work for track shutdown period (servo/controls upgrade)
- Design well underway, pre-shutdown construction already planned
- Ford and Weadon (mostly Weadon) need to coordinate shutdown work with Norrod and Anderson
- Investigate instrumentation for wind measurements.
- We should wait for Kim's analysis to proceed a bit further before going off with this task.
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- Resurrect quadrant detector and integrate into M&C for logging data in standard format
- Jason Ray, J.D. Nelson, John Ford,SDD
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- Fred Schwab, Joe Brandt, Tim Weadon, Rick Fisher
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- Fred Schwab, Joe Brandt, Tim Weadon, Todd Hunter
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- Fred Schwab, Joe Brandt, Tim Weadon, John Ford, Rick Fisher
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- Fred Schwab, Joe Brandt, Tim Weadon, John Ford, Todd Hunter
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- Frank Ghigo, Ron Grider, Todd Hunter
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- Fred Schwab, John Ford, Dennis Egan, Harry Morton, Todd Hunter
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- See attached proposed draft project schedule
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- See attached proposed OUT OF DATE draft project schedule
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Restarting the PTCS Project
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PTCS Project Plan
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This is intended to be the top-level page providing an overview, and links to work related to restarting the PTCS. We are going to start working at a low level to improve pointing and collimation, as well as static measurements and corrections to small-scale surface accuracy.
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>
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This is intended to be the top-level page providing an overview, and links to work related to continued PTCS development. We are going to start working at a low level to improve pointing and collimation, as well as static measurements and corrections to small-scale surface accuracy.
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- Bring someone up to speed on generating pointing and OOF models
- Begin working on planning for work for track shutdown period (servo/controls upgrade)
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- Bring someone up to speed on generating pointing models, incorporate new techniques (e.g. inclinometer measurements of track) - see ContinuedPointingFocusDevelopment?
- Bring someone up to speed on OOF models; start incorporating new techniques including JWST Wavefront Sensing and Controls Group collaboration - see ContinuedOOFDevelopment?
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- Begin working on planning for work for track shutdown period (servo/controls upgrade)
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| Changed: |
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- Fred Schwab, John Ford, Dennis Egan, Harry Morton
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- Fred Schwab, John Ford, Dennis Egan, Harry Morton, Todd Hunter
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%META:TOPICMOVED{by="RichardPrestage" date="1160752481" from="PTCS.PTCSRestartProposal" to="PTCS.PTCSProjectPlan"}% |
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- Begin working on planning for work for track shutdown period (servo/controls upgrade?)
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- Begin working on planning for work for track shutdown period (servo/controls upgrade)
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- John Shelton, John Ford, RF engineer, Electronics Tech, Mechanical engineering
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- John Shelton, John Ford, Steve White, Electronics Tech, Mechanical engineering
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- Fred Schwab, Joe Brandt, Tim Weadon, Rick Fisher
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- Fred Schwab, Joe Brandt, Tim Weadon, John Ford, Rick Fisher
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- Begin working on planning for work for track shutdown period (servo/controls upgrade?)
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- Begin working on planning for work for track shutdown period (servo/controls upgrade)
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- John Ford, Tim Weadon, Dennis Egan, Harry Morton
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- Fred Schwab, John Ford, Dennis Egan, Harry Morton
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- Improve pointing and collimation
- Windy conditions
- Thermally unstable conditions
- Benign conditions
- Improve servo performance
- Measure and improve small-scale deformations
- Make incremental improvements to PTCS instrumentation
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This spring will be used to get the project started back up. This process includes revisiting the project notes and other documentation, getting the project team together, and embarking on an initial course of action.
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- Perform tacking performance experiment, for appropriate scanning patterns.
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- Investigate measurements and adjustments for small-scale surface errors.
- Investigate instrumentation for wind measurements.
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- jray,jnelson,jford,software person
- Begin design and development work on Elevation Axle Pose measurement system
- jshelton,jford,electronics tech
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- Jason Ray, J.D. Nelson, John Ford,SDD
- Begin design and development work on Elevation Axle Pose measurement system (LRFV2)
- John Shelton, John Ford, RF engineer, Electronics Tech
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- Fred Schwab, Joe Brandt, Tim Weadon
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- Perform tacking performance experiment, for appropriate scanning patterns.
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- Fred Schwab, Joe Brandt, Tim Weadon, Rick Fisher
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- John Ford, Tim Weadon, Bob Anderson
- Investigate measurements and adjustments for small-scale surface errors.
- John Ford, Tim Weadon, Dennis Egan, Harry Morton
- Investigate wind measurements for corrections.
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