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Class Information
Number: 342/194
Name: Communications: directive radio wave systems and devices (e.g., radar, radio navigation) > With particular circuit > Complex signal (in phase and quadrature)
Description: Subject matter including receiver circuit means to separate returned radar signals into "in phase" and quadrature" components.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 4837578 |
Apparatus and method for range detection using the analytic signal identified from the received signal |
Jun. 6, 1989 |
| 4833479 |
Digital poly-phase pulse compressor |
May. 23, 1989 |
| 4812849 |
Nonquadrature correction circuit |
Mar. 14, 1989 |
| 4801939 |
High-speed data compressor/decompressor for synthetic aperture radar |
Jan. 31, 1989 |
| 4800388 |
Apparatus for measuring pulse compression ratio |
Jan. 24, 1989 |
| 4783660 |
Signal source distortion compensator |
Nov. 8, 1988 |
| 4772889 |
Device for calculating a discrete fourier transform and its application to pulse compression in a radar system |
Sep. 20, 1988 |
| 4768035 |
Coherent radar digital data collector and sampling technique for noncoherent transmitter radars |
Aug. 30, 1988 |
| 4760398 |
Methods and apparatus for determining the differential sideband power of radar signals |
Jul. 26, 1988 |
| 4731612 |
Method and apparatus for eliminating short pulses in a doppler radar |
Mar. 15, 1988 |
| 4730189 |
Pulse Doppler radar with variable pulse repetition frequency |
Mar. 8, 1988 |
| 4723125 |
Device for calculating a discrete moving window transform and application thereof to a radar system |
Feb. 2, 1988 |
| 4719466 |
Adaptive radar signal processor for the detection of useful echo and the cancellation of clutter |
Jan. 12, 1988 |
| 4717916 |
High resolution imaging doppler interferometer |
Jan. 5, 1988 |
| 4713666 |
Method of processing the sum and difference signals of a radar of the monopulse type for estimating the parasite phase introduced between these signals by the ultrahigh frequency formation cir |
Dec. 15, 1987 |
| 4712109 |
Device for the identification of undesirable echoes in radar systems |
Dec. 8, 1987 |
| 4710772 |
Log magnitude pulse interference detection for a radar system |
Dec. 1, 1987 |
| 4694298 |
Adaptive, fault-tolerant narrowband filterbank |
Sep. 15, 1987 |
| 4673941 |
Digital pulse compression filter |
Jun. 16, 1987 |
| 4670755 |
Pulse radar apparatus |
Jun. 2, 1987 |
| 4667200 |
Pulse radar apparatus |
May. 19, 1987 |
| 4660042 |
Cancellation system for transmitter interference with nearby receiver |
Apr. 21, 1987 |
| 4649395 |
Pulse radar apparatus |
Mar. 10, 1987 |
| 4647874 |
Doppler signal processing circuitry |
Mar. 3, 1987 |
| 4646095 |
Method of resolving closely spaced targets |
Feb. 24, 1987 |
| 4644356 |
Bistatic coherent radar receiving system |
Feb. 17, 1987 |
| 4635060 |
Coherent-on-receive radar with prephase correction circuit |
Jan. 6, 1987 |
| 4635059 |
Vehicle mounted Doppler radar system |
Jan. 6, 1987 |
| 4618863 |
Continuous wave radar with ranging capability |
Oct. 21, 1986 |
| 4616228 |
System for suppressing unwanted long-range and/or second-time-around radar echoes |
Oct. 7, 1986 |
| 4616229 |
System and method of compensating a doppler processor for input unbalance and an unbalance measuring sensor for use therein |
Oct. 7, 1986 |
| 4608567 |
Fast envelope detector with bias compensation |
Aug. 26, 1986 |
| 4600925 |
Vector phase angle change distribution processor |
Jul. 15, 1986 |
| 4591857 |
Programmable LFM signal processor |
May. 27, 1986 |
| 4586044 |
Clutter positioning for electronically agile multi-beam radars |
Apr. 29, 1986 |
| 4554548 |
Side-lobe suppressing unit for a pulse radar apparatus |
Nov. 19, 1985 |
| 4547775 |
Frequency agile imaging radar with error frequency correction |
Oct. 15, 1985 |
| 4538149 |
Frequency agile magnetron imaging radar |
Aug. 27, 1985 |
| 4536764 |
Method of counting multiple targets in the post detection processing of a radar |
Aug. 20, 1985 |
| 4532515 |
Angle of arrival measurements for two unresolved sources |
Jul. 30, 1985 |
| 4524361 |
Radar systems employing two kinds of pulses |
Jun. 18, 1985 |
| 4521779 |
Pulse compression system |
Jun. 4, 1985 |
| 4513383 |
Separation of communication signals in an adaptive antenna array |
Apr. 23, 1985 |
| 4504833 |
Synthetic pulse radar system and method |
Mar. 12, 1985 |
| 4499467 |
Doppler radar sets with target direction sensing capability |
Feb. 12, 1985 |
| 4489319 |
Detector with variance sensitivity |
Dec. 18, 1984 |
| 4489392 |
Orthogonalizer for inphase and quadrature digital data |
Dec. 18, 1984 |
| 4488154 |
Radar processor |
Dec. 11, 1984 |
| 4486756 |
Method of reducing angle noise in a radar |
Dec. 4, 1984 |
| 4484194 |
Arrangement in a radar system for correction of phase and amplitude errors in a video signal |
Nov. 20, 1984 |
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