Multi-frequency, multi-target vehicular radar system using digital signal processing
US5302956A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 14, 1992 |
| Grant date | Apr 12, 1994 |
| Priority date | — |
| Expiry date | Aug 14, 2012 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S2013/9322
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A vehicular collision avoidance radar system using digital signal processing techniques including a transmit section that generates a two channel transmit frequency. An antenna both transmits the transmit signal and receives a reflected receive signal. A Schottky diode mixer generates a difference signal having a frequency equal to the transmit frequency minus the receive frequency. A signal switch in a front end electronics section time demultiplexes and samples the channel 1 and channel 2 signals. The samples are coupled to a two-channel analog to digital (A/D) converter. A digital electronics section receives the digital information and performs a Fast Fourier Transform (FFT) on each channel of digital data to determine relative speed and range of a target based upon the frequency and the difference in phase of the two channels. The digital electronics section also receives information regarding the status of vehicle operation and/or controls to determine the degree of danger presented by an identified target.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.