In hetrodyne laser tracking of a spacecraft, the incoming laser signal may be significantly offset from the local laser reference, producing a high-frequency beat note that must be accurately counted to produce an accurate phase measurement.
Hetrodyne Laser Tracking at High Doppler Rates
1994-01-01
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Englisch
The Novel Image-based Tracking Laser Doppler Vibrometer
British Library Conference Proceedings | 2004
|NTRS | 1996
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