CW radar range measuring system with improved range resolution
US5999119A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 18, 1996 |
| Grant date | Dec 7, 1999 |
| Priority date | — |
| Expiry date | Dec 18, 2016 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S13/584
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A CW radar range measuring system having a transmitter adapted to transmit a continuous wave radar signal phase encoded in accordance with a code and a receiver adapted to receive a radar return from the transmitted radar signal. The receiver includes an analog to digital converter section for converting a sequence of samples of the radar return into a corresponding sequence of digital words. A digital correlator/integrator is fed by the digital words and the code for providing an indication of radar return energy as a function of range from the transmitter. A processor is fed by the digital correlator/integrator for determining, from the indicated energy, target range. The system includes a frequency spectrum analyzer for determining a frequency spectrum of the digital words and wherein the processor determines the target Doppler frequency from such determined frequency spectrum. In one embodiment of the invention, the digital correlator/integrator is fed the digital words and the frequency analyzer is coupled between the digital correlator/integrator and the processor. In another embodiment of the invention the frequency analyzer is fed the digital words and the digital correlato…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.