Alarm sensor, in particular for a target tracking apparatus
US6137436A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jun 1, 1998 |
| Grant date | Oct 24, 2000 |
| Priority date | — |
| Expiry date | Jun 1, 2018 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S13/346
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A pseudo-noise-modulated spread spectrum is irradiated undirectedly--or, encoded by different modulation, into mutually displaced spatial sectors--and the energy (20) received after reflection at a potential target (13) is cross-correlated, using the pseudo-noise code which is predetermined at the transmission end, in order to provide a spherical monitoring effect which is continuous but which cannot be located in respect of its origin, to provide a warning in particular for marine craft, land vehicles and aircraft against an attacking guided missile as the target (13) to be repelled, and in order to be able to transfer to a target tracker (12) distance and speed information obtained from the correlation product, with the alarm signal, if the alarm sensor (11) is not itself also used as the tracking sensor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.