Cyclic encoder errors' - PowerPoint PPT Presentation

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Cyclic encoder errors'

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Cyclic encoder errors. Wind? Pointing variations between horns. Pointing variations within in a horn: Frequency. X/Y Feed. Reference pointing software: ... – PowerPoint PPT presentation

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Title: Cyclic encoder errors'


1
ATCA Pointing/Tracking Issues
  • Cyclic encoder errors.
  • Wind?
  • Pointing variations between horns.
  • Pointing variations within in a horn
  • Frequency.
  • X/Y Feed.
  • Reference pointing software
  • UI/documentation.
  • validation.

2
Azimuth Encoder Errors
3
Elevation Encoder Errors
4
Comparison of Results
5
Multi-band scatter 3
6
Multi-band scatter 4
7
CA03 Az 3cm
8
CA03 Az 12mm
9
MJK 3cm
Courtesy MJK
10
Further tests
  • Measure frequency dependence
  • 12mm, 3mm maser pointing
  • How does offset affect pointing soln?

11
Reference Pointing UI
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