短波信道中3G-ALE信号的载波检测方法

A Novel Carrier Estimation Method of 3G-ALE Signal in Short-wave Channel

第三代短波通信系统的自动链路建立协议(3G-ALE)具有更高的数据速率和更强的噪声适应能力,研究3G-ALE信号的检测和参数估计技术对电子侦察和干扰具有重要意义。在推导了多径和衰落信道对信号自相关的影响后,提出一种载波检测与估计方法,即信号经过相关运算后,运用现代功率谱估计的方法,实现对3G-ALE信号的检测与载波估计,并进行性能仿真。仿真结果证明了多径衰落条件下所提出的检测方法的有效性。

The third-generation HF automatic link establishment（3G-ALE） achieves better data speed and adaptability of noise,So it is important for electronic reconnaissance and jamming to study technology of detection and parameter estimation of 3G-ALE Sig-nal.After derivation the effect of the signal＇s autocorrelation in multipath and fading conditions,A Novel Carrier Estimation Method is proposed.After the correlation operation,the detection and carrier estimation of 3G-ALE signal using modern spectral estimation is simulated.Simulation show the effectiveness of 3G-ALE signal detection technique based on the method proposed in multipath and fading conditions.