Spin echo matched filter ECM detector
US4017855A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 29, 1973 |
| Grant date | Apr 12, 1977 |
| Priority date | — |
| Expiry date | Jan 29, 1993 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S7/36
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A system for determining the use of an ECM jammer against a bi-frequency radar utilizing a spin echo matched filter. Portions of two simultaneously transmitted radar RF pulses of different instantaneous carrier frequencies are coupled to a non-linear element which produces a composite pulse signal containing predetermined intermodulation product frequencies. This composite pulse signal is utilized as the input pulse to a spin echo system which has a locally generated postset pulse applied a predetermined time thereafter. The radar return signals are coupled to the spin echo system which produces a spin echo correlation signal upon the reception of an ECM radar return pulse which inherently contains substantially the same predetermined intermodulation product frequencies.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.