Vehicle Radar System (MONOPULSE AZIMUTH RADAR SYSTEM FOR AUTOMOTIVE VEHICLE TRACKING)

摘要

A single pulse vehicle radar system for tracking a target for an automobile according to the present invention detects a transmitted signal reflected from a target and received at two different positions to determine the sum and difference of the detected reflected signals at these two positions . The sum and difference are compared to determine the racket deviation from the reference azimuth. The source frequency provided by the Gunn diode 84 is applied to the dual-lobe single pulse antenna 40 and transmitted thereby. The antenna lobe detects the reflected signal from the target by sensing them in two different lobes. A hybrid junction 74 provides a sum and difference signal to the mixer that homodyne the signal to produce sum and difference Doppler frequency signals using the source frequency. This Doppler frequency signal is amplified and then compared to determine the target deviation from the reference azimuth.