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Class Information
Number: 342/172
Name: Communications: directive radio wave systems and devices (e.g., radar, radio navigation) > Testing or calibrating of radar system > By simulation > With delay
Description: Subject matter including circuit means in the simulator to retard the passage of signals from one part of the apparatus under test to another.

Patents under this class:
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Patent Number Title Of Patent Date Issued
4847623 Radar tank gauge Jul. 11, 1989
4739351 Verification of on-line fault monitor performance Apr. 19, 1988
4737791 Radar tank gauge Apr. 12, 1988
4683473 Radar transit time simulator device Jul. 28, 1987
4679049 Delay simulator for FM-CW range measuring apparatus Jul. 7, 1987
4665403 Method and apparatus for level measurement with microwaves May. 12, 1987
4661818 Electronically adjustable delay-simulator for distance-measuring apparatus operating on the frequency-modulated continuous wave principle Apr. 28, 1987
4613863 Electronic augmentation of radar targets Sep. 23, 1986
4523196 Test equipment for a synthetic aperture radar system Jun. 11, 1985
4499469 Radar tester Feb. 12, 1985
4467327 Active millimeter wave simulator for missile seeker evaluations Aug. 21, 1984
4450447 Synthetic aperture radar target simulator May. 22, 1984
4435712 FM-CW Radar ranging system with signal drift compensation Mar. 6, 1984
4319247 Target detecting apparatus equipped with testing device for simulating targets at different ranges Mar. 9, 1982
4168502 Digitally controlled signal simulator Sep. 18, 1979
4121213 Radar altimeter simulator Oct. 17, 1978
4106020 FM-CW Radar ranging system Aug. 8, 1978
4053890 Internal calibration system Oct. 11, 1977
4044355 Measurement of contents of tanks etc. with microwave radiations Aug. 23, 1977
3962657 Broadband data modulation system Jun. 8, 1976
3955199 Method of and apparatus for ground testing doppler navigation sets-a doppler radar simulator May. 4, 1976

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