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Pulsed Phase Shifter Improves Doppler RadarAbility of microwave Doppler radar to measure velocity of slow moving nearby target is enhanced by pulsed 90 degrees phase shifter in radar transmission line between circulator and antenna. Because of phase shifting, Doppler frequency is detected as modulation on carrier instead of baseband signal. Carrier is amplified and filtered before demodulation, resulting in strong, clean demodulated Doppler for measurement and display.
Document ID
19820000135
Acquisition Source
Legacy CDMS
Document Type
Other - NASA Tech Brief
Authors
Kobayashi, H. S.
Shores, P. W.
Rozas, P.
Date Acquired
August 10, 2013
Publication Date
March 1, 1982
Publication Information
Publication: NASA Tech Briefs
Volume: 7
Issue: 1
ISSN: 0145-319X
Subject Category
Electronic Systems
Report/Patent Number
MSC-18675
Accession Number
82B10135
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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