汽车防撞雷达中的一种抗交叉干扰方法

Method of Countermeasures of Crossed Jamming in Automotive Anti-collision Radar

文中提出了一种从固定个数的斜率中随机选取一个作为雷达发射波形调制三角波斜率的方法,从而解决汽车防撞雷达中严重的电磁波交叉干扰问题。分析了选取随机斜率设计波形的原理,利用此种方法进行仿真验证与虚警率计算,结果证明,采用此种方法后,干扰信号只相当于增加了雷达接收机的噪声,而不会对本机雷达信号产生影响从而造成虚警,能够很好的解决电磁波交叉干扰的问题。

To solve the serious crossed jamming problem between the multiple radars, this paper proposes the method which is used to randomly selectone from a fixed number of slopes as radar transmitted waveform triangle wave modulation slope, analyzes the random slope design principle of the wavetorm, then uses this method to simulate and calculate false alarm rate. The results show that after using this method, jamming signal is only the equal of the noise signal of the radar receiver, and it can not affect the local radar signal and can not cause false alarm. So this method is suifable for perfectly solving the crossed jamming.