Radar target simulator
US4982196A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 16, 1989 |
| Grant date | Jan 1, 1991 |
| Priority date | — |
| Expiry date | Oct 16, 2009 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S7/4065
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The present invention provides a radar simulation system with at least two counters. The first counter is a coarse counter 20/30 that counts a transmit pulse interpulse periods to provide a coarse return delay at the beginning of a radar look. The second counter is a fine counter 22/36 which counts, after the coarse counter has counted down to zero, from each subsequent transmit pulse to the time for the return pulse. Once the coarse counter has finished counting, the fine counter, which can be reset and reloaded during the look responsive to each transmit pulse, can provide return targets repeating at the same distance at the pulse repetition frequency. A cyclic counter 24 can also be added that produces the return pulses by cyclically counting the interpulse period one the fine counter has timed out. If the cyclic counter is used the fine counter is not reloaded during the look. If the target moves more than the range resolution of the radar during the radar look, a phase-in counter 70 and secondary return counter 66 adjust the delay of the return pulses to simulate target movement during the radar look.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.