Linear frequency modulation control for FM laser radar

Optics: measuring and testing – Range or remote distance finding – With photodetection

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356 285, 359 23, 359 27, 359 28, G01C 308, G01P 336, G03H 102, G03H 126

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active

052892522

ABSTRACT:
A closed loop frequency control system for maintaining accurate linearity in the transmitted signal (60) in a linear frequency modulated (LFM) chirped laser radar system. A correction signal (50), derived from an output pulse monitor is summed with the modulation waveform (18) to correct non-linearities in real time.

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"Stabilized Linear FM Generator", W. J. Caputi, IEEE Transactions On Aerospace and Electronic Systems, vol. AES-9, No. 5, Sep. 1973.
"High-Resolution Radar Coherent Linear FM Microwave Source", Bruce D. Campbell, IEEE Transactions On Aerospace and Electronic Systems vol. AES-6, No. 1, Jan. 1970.

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