Automotive anti-collision radar system with two receiving antennas and operating method

Abstract

The invention provides an automotive anti-collision radar system with two receiving antennas and an operating method. The automotive anti-collision radar system is provided with the two independent receiving antennas and an independent transmitting antenna, wherein the two independent receiving antennas and the independent transmitting antenna are connected into a radio-frequency signal processing module respectively. A central control processing part comprises a PS module and a PL module, wherein the PS module comprises a system submodule, a data processing submodule and a clock submodule, and the PL module comprises a modulating signal generation submodule, an algorithm submodule, a phase-locked loop submodule and a control submodule. An output device comprises a displayer, an alarm device and an emergency braking device. The operating method includes the steps of transmitting modulation triangular waves, allowing the two receiving antennas to collect real echo signals and virtual echo signals respectively, calculating distance information, speed information and azimuth information of targets through a MUSIC algorithm and target pairing, transmitting results to the PS module for synchronous display and directly controlling the alarm device and the braking device. Through the automotive anti-collision radar system with the two receiving antennas and the operating method, target azimuth can be obtained, the multi-target judging ability is improved, the computing speed is high, cost is low, reliability is high, and the automotive anti-collision radar system is simplified in structure, convenient to maintain, easy to upgrade and capable of reducing cost.

Description

technical field [0001] The invention relates to the technical field of automobile early warning, in particular to an automobile anti-collision radar system with dual receiving antennas and an operating method. Background technique [0002] With the rapid development of urbanization and highway construction, automobiles have become an indispensable means of transportation in people's lives. However, while automobiles provide convenience for people, they also hide many potential safety hazards. In this background, the research and development of automobile early warning technology has become a hot spot, among which the research and development of automobile anti-collision radar system has very important practical significance and application value. [0003] Existing automotive anti-collision radars are implemented using a variety of technologies. Because ultrasonic waves, lasers, and infrared are easily affected by bad weather and environmental factors, the detection accuracy...

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to design a car anti-collision with dual receiving antennas for the problems of poor detection ability, poor direction finding ability, low target resolution and complex system hardware in the complex environment of the anti-collision radar existing in the prior art. Radar system, the main chip for radar echo sig

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