DEVICE FOR ELIMINATING FIXED ECHOES IN A RADAR
Assignee
Filed
Nov 22, 1978
Granted
Nov 1, 1988
Location
FR
Abstract
A device for eliminating fixed echoes in a pulse radar. The device is provided with a demodulator unit where intermediate frequency signals of the radar are demodulated into video-frequency signals. The video-frequency signals are utilized in a utilizing unit provided with a display unit. A processing unit of the video-frequency signals is connected between the demodulator means and the utilizing unit. The processing unit is constituted with a range unit sampling circuit, a Doppler filtering unit and a video-frequency signal dynamic compressing unit connected in series. The processing unit is further provided with, on the one hand, a video-frequency signal amplitude measuring circuit for measuring at least the video amplitude signal in two range units in the same transmission recurrence and, on the other hand, with a dynamic compression control unit as a function of these amplitude, the video-frequency signal amplitude measuring circuit and the dynamic compression control unit being series connected upstream the Doppler filtering unit. w
Source: Google Patents
35 USC §181 Secrecy Order
Imposed
Jan 22, 1982
Rescinded
Apr 22, 1987
Duration
5 years, 3 months
Inventor
- 1JEAN CLAUDE MARCHAIS
Record Details
- Patent number
- US 4782343
- Application
- 05964376
- Aerospace match
- Yes
- Dataset source
- 35 USC §181 SO records
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