Electronic tuning system continually adjusts frequency of tunable diode laser to compensate for Doppler shift caused by motion of transmitter or receiver containing laser. Doppler-shift-compensating system intended primarily for use in transmitter or receiver of laser remote-sensing or communication system to keep frequency of received signal within frequency range of narrow-band-pass filter. By use of narrow-band filter (instead of wide-band filter required in absence of Doppler compensation), signal-to-noise ratio of laser system increased. Thus, less-powerful transmitter usable.
Compensating For Doppler Shift In Laser Instrumentation
NASA Tech Briefs ; 14 , 8
1990-08-01
Miscellaneous
No indication
English
Doppler Shift Target Localization
IEEE | 2013
|Application of Laser Doppler Velocity Instrumentation to the Measurement of Jet Turbulence
SAE Technical Papers | 1969
|Doppler-shift analysis narrow's search
Online Contents | 2014