Receiving circuit
US4786909A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jan 24, 1986 |
| Grant date | Nov 22, 1988 |
| Priority date | — |
| Expiry date | Jan 24, 2006 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S3/74
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
In a receiving circuit a control circuit and a direction finding circuit generate a digitally encoded "descriptor" which characterizes pulses of r.f. radiation received in a particular azimuthal direction and having a particular carrier frequency. The "descriptor" may be compared with data stored in a processing circuit representing r.f. pulses emitted by sources which have already been detected or which are known to exist. To reduce the workload on processing circuit a number of emulator circuits generate pulse patterns which simulate pulses produced by known sources of little inherent interest. If the received pulses match the simulated pulses a gate inhibits control circuit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.