A Method of Relative Delay Measurement for the Wideband Digital Array Radar Based on Dechirping Technique
Peng Wei①Wang Xue-gang①,Tang Bin①, Wu Hong-gang②
①School of Electronic Engineering, University of Electronic Science and Technology of China, Chengdu 610054, China; ②The Second Research Institute of Civil Aviation Administration of China, Chengdu 610041, China
Abstract:In this paper, based on the Dechirping technique, a new method of measuring relative delays among digital T/R modules for the wideband digital array utilizing wideband LFM pulses is proposed. To enhance radar system’s flexibility and extensibility and reduce hardware costs, this method can be realized by software. By using the decimation and FFT algorithm, not only can the measurement method be easier to be implemented for computational efficiency and reduce data rate, but also good measurement precision and real-time performance are achieved, at the same time, all relative delays among multiple digital T/R modules are enabled to be acquired in one measurement process. The performance of the proposed method is analyzed from the theoretical angle and thus some optimal system parameters are determined. The simulation results show the effectiveness and efficiency of the proposed method.
彭卫,汪学刚,唐斌,吴宏刚. 基于Dechirping技术的宽带全数字阵列雷达时延测量方法研究[J]. 电子与信息学报, 2010, 32(1): 32-27 .
Peng Wei①,Wang Xue-gang①,Tang Bin①,Wu Hong-gang②. A Method of Relative Delay Measurement for the Wideband Digital Array Radar Based on Dechirping Technique. , 2010, 32(1): 32-27 .