Chaos signal radar automobile anti-collision system and its method

A chaotic signal and anti-collision system technology, applied in radio wave measurement system, radio wave reflection/re-radiation, re-radiation utilization, etc., can solve problems such as high cost, low measurement accuracy, and small bandwidth of microwave chaotic signals, and achieve Strong anti-interception ability, strong anti-interference ability, and the effect of improving anti-interference ability
CN101339246AInactive Publication Date: 2009-01-07TAIYUAN UNIV OF TECH
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Patent Information

Authority / Receiving Office
CN ยท China
Patent Type
Applications(China)
Current Assignee / Owner
TAIYUAN UNIV OF TECH
Publication Date
2009-01-07
Estimated Expiration
Not applicable ยท inactive patent

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Abstract

The invention discloses an anti-collision system of a chaotic signal radar vehicle and a method thereof, and is characterized in that the chaotic signal produced by a chaotic laser in the system is used as a radar carrier signal; after passing a power splitter, one part of the radar carrier signal is used as a transmit; another part of the radar carrier signal is used as a reference signal; in the method, an echo signal and the reference signal in a correlation method are adopted to obtain the delay time of the echo signal so as to calculate and obtain the distance of a target obstacle; by using a distance difference in a certain time interval, the relative speed of the target obstacle is calculated and obtained. The anti-collision system disclosed by the invention utilizes the nonlinear characteristic of the radar to produce the chaotic signal as the carrier wave of the radar so as to obtain a broadband chaotic signal, thereby improving the anti-interference ability of the on-board radar, accurately realizing a corresponding warning and a braking, and avoiding the occurrence of an accident; besides, the anti-collision system has the advantages of simple structure, stable property and low price, thereby being applicable to various vehicles.
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Description

technical field

[0001] The invention relates to a radar automobile anti-collision system and method, in particular to a system and method for realizing automobile anti-collision by using a chaotic signal radar system. Background technique

[0002] Today, with the increasingly developed road traffic, cars have become one of the important means of transportation for people, and driving safety has become a common concern of people. pregnancy. Since 1971, there have been various active vehicle collision avoidance radar systems and methods such as ultrasonic, laser, and microwave. Ultrasonic radar system is mainly used for automotive rear-view radar due to its poor target identification ability and short measurement distance. Lidar systems are greatly affected by atmospheric conditions, such as rain, fog, and dust, and are difficult to use in automotive collision avoidance systems. In comparison, the microwave automotive anti-collision radar system is the most widely used. ...

Claims

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