摘要
PRI是雷达信号调制的重要参数,也是雷达信号分选的主要特征。目前,基于PRI的信号分选算法对噪声脉冲和脉冲丢失十分敏感,且难以有效分选出各型复杂调制信号。针对此问题,提出了一种综合分选新方法。该方法将雷达信号分为PRI周期性调制信号和PRI非周期调制信号两类,首先采用TOA中点匹配分选出周期性调制信号,然后基于方正弦波插值实现非周期性调制信号分选。仿真实验表明,该方法分选准确率较高,且对噪声脉冲和脉冲丢失不敏感。
Pulse repetition interval （PRI） is not only an important parameter of radar signai modulation, but also a key characteristic in radar signal sorting. Nevertheless, the signal sorting algorithm based on PRI is very sensitive to noise pulse and pulse loss, is not suitable for the current complex radar reconnaissance environment. Aiming at this problem, a new synthetic sorting method is proposed. The proposed method divides radar signal into two categories： PRI periodic modulation and PRI non-periodic modulation. TOA center matching is used to estimate the PRI value of periodic modulation signal, and the square sine wave interpolating algorithm is used to sort the non-periodic modulation signal. Simulation results show that the proposed method has high accuracy and is insensitive to noise pulse and pulse loss.
出处
《航天电子对抗》
2017年第6期53-57,共5页
Aerospace Electronic Warfare
