摘要
针对Link16信号的特点,可采用类似雷达脉冲参数估计的方法测量信号的特征参数。由于受MSK调制信号中符号0和1不平衡的影响,此方法对Link16信号载频和频偏的估计具有很大的偏差。为此提出了一种改进的载频和频偏估计的方法。仿真实验表明,这种改进的算法具有更高的参数估计精度。
According to the characteristics of Link16 signal,its feature parameters can be estimated through radar pulse parameter measurement algorithm. Based on this idea, the estimates of Link16 signal carrier frequency and frequency offset have large bias error because of the imbalance of 0 and 1 symbol numbers in MSK signal. To solve this problem, a improved carrier frequency and frequency offset estimate algorithm is proposed. Simulation results show that the proposed algorithm has higher parameter estimate precision.
出处
《航天电子对抗》
2014年第1期44-46,共3页
Aerospace Electronic Warfare
关键词
Link16信号
跳频
直接序列扩频
参数估计
Link16 signal
frequency hopping
direction sequence spread spectrum
parameter estimate
