基于高阶谱技术地波超视距雷达信号检测算法

提出了基于高阶统计量时延估计的一种新的检测算法，并用于高频地波超视距雷达中。给出了在低信杂比和色噪声背景下该算法所得到的结果，并同传统的检测方法进行了比较。结果表明，该算法在色噪声背景和低信杂比（４ｄＢ）情况下，利用有限的数据量较好地检测到信号，并能准确地估计出目标的距离和速度，从而增大了雷达的作用距离，提高了检测性能。

Signal Detection Algorithms Based on High-Order Statistics for the OTH Radar

The paper presents a new detection algorithm based on highorder statistics time delay estimation. The proposed algorithm has the advantage over tarditional methods under conditions of low SNR and color noise background. The result shows that the proposed method can detect the target and estimate its range and velocity (4dB) exactly by using limited data under color noise background and low SNR situation, therefore the resulted detector can not only extends the detection range, but also raises the performance of detection.