相控阵雷达波束控制器优化设计  

Optimization Design of Phased Array Radar Controller

作　　者：张延曹[1] 王勇[1] 陈灿[1] 王孔华[1] 

机构地区：[1]空军工程大学防空反导学院,陕西西安710051

出　　处：《计算机仿真》2015年第11期51-54,共4页Computer Simulation

摘　　要：在雷达控制优化设计的研究中,针对相控阵天线波束要求波束扫面快、灵活的问题,提出了采用可编程控制逻辑门阵列(FPGA)的数字波束形成技术,难点在于波控码的计算。通过比较采用了查表法,即先把需要的三角函数的值以及系数的值计算好,放在不同的RAM中,通过外部接口接收来自上位机的信号工作频率,方向角以及俯仰角的参数。参数会通过给定的通信协议,转化为十六进制送进去,相当于查找表中对应的所需数据的地址,在RAM中查找到所需的值调用,然后计算出雷达阵列中的每个雷达的移相码,送到每个移相器中。通过仿真,以及最后的测试表明,改进方法可以快速而准确的计算出每个天线单元所需的移相码,并能同步的把各个波控码送给对应的移相器上。Faced with the problem of phased array antenna beam scanning speedly and flexibly, we put forward the digital beam forming technology based on the field programmable gata array, which difficulty is to calculate the wave control code. The look-up table method was taken through the comparison, of which the number of trigonometric function and the coefficient values were precalculated and then put into different RAM. These working frequency, direction angle and pitch angle of the received signals from the host computer were transformed into hexadecimal which is equcal to the address of the needed data in look-up table. According to the value needed from RAM, each radar shifting code in the array of phase was calculated and then sent to each phase shifter. The simulation experiment and the final test show that the method can quickly and accurately calculate each antenna element phase coder required , and transfer the phase shifter control code to each codeshifter synchronously.

关 键 词：相控阵雷达 波束控制 查表法 可编程控制逻辑门阵列 

分 类 号：TN955[电子电信—信号与信息处理]