Abstract

Monostatic coherent doppler signal-to-noise (S/N) ratio measurements were made with a 15 watt, continuous wave, homodyne 10.6 micrometer ladar. The path from the ladar to the target was 30m horizontal with a single fold of the beam to maximize path length. The beam was focused at the target through the 25cm aperture Schwartzchild telescope. Attenuation at the folding mirror was used to reduce power on the target and attenuate the returned beam to prevent saturation of the detector preamplifier circuit.

© 1987 Optical Society of America