一种发射通道校正技术的实现

An Implementation of Calibration Method for Transmitting Channels

高机动性是雷达的重要指标之一,而相控阵雷达会因环境条件的变化造成波束指向精度下降及雷达性能的下降。分析了导致一个由多个行线阵组成的相控阵雷达系统发射波束指向精度下降的各种因素,以及寻找发射通道初始相位不一致导致雷达性能严重下降问题的最佳解决途径,给出了发射通道实时校正的工作原理,并详细论述了发射通道校正技术的实现方法。最后,以某高机动雷达为例,应用该方法进行实时校正得到的实际效果满足雷达波束指向精度对各发射通道相位一致性的要求。

High mobility is an important measures of radar, but the change of environment conditions can decrease the pointing accuracy and the performance of phased array radar. This paper analyses the factors which cause the decline of pointing accuracy of transmitted beam in phased-array radar system composed of many row linear arrays. The best solution to solve the problem of radar performance decrease caused by initial phase inconsistency of transmitting channels. Then, operational principle of real-time correction for transmitting channels is proposed and implementation methods of correction technology for transmitting channels are discussed in detail. Finally, making a highly-mobile radar as an example, practical results of the real-time correction method satisfies the phase consistency requirement of transmitting channels for radar beam pointing accuracy.