Target location systems
US4253166A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Apr 12, 1979 |
| Grant date | Feb 24, 1981 |
| Priority date | — |
| Expiry date | Apr 12, 1999 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S13/06
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A target location system comprising a signal transmitter including a pair of signal transmitter transducers arranged in spaced apart relationship and means for driving the transducers with transmitter pulse signals at the frequencies Fo and Fo+Fb respectively which are arranged to increase progressively in frequency during each pulse to Fo+.DELTA.f and Fo+Fb+.DELTA.f respectively where .DELTA.f is equal to or less than Fb, and an echo signal receiver comprising receiving transducer means feeding a filter bank, the filter bank comprising a plurality of filters which cover in aggregate a predetermined frequency band, each filter being adapted to cover one slot or section of the band whereby the bearing of a target from which an echo signal of a transmitter pulse signal is received, is indicated in accordance with the slot or slots in which the echo signal is received.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.