基于GS正交算法的信号检测方法

AN APPROACH OF SIGNALS DETECTION BASED ON GS ORTHOGRAPHY ALGORITHM

基于ＧＳ（Ｇｒａｍ－Ｓｃｈｍｉｄｔ）正文算法，推导出一个正交基范数阈值，据此阈值可在ＧＳ正交化过程中判定出信号矢量空间的维数，从面实现对信号源个数的检测。在此基础上，利用所获得的正交基构造一个信号矢量空间，并在此空间中定义了一个搜索画数来实现对信号方位的估计。这种方法的优点在于算法简单，运算量小，且特别适于大阵列的测向。计算机模拟结果也显示了本方法的良好检测效果。

Based on Gram-schmidt orthography algorithm,a formulation of threshold isderived to detect the signal numbers. Then a search vector can be defined and prdectedto the orthogonal signal vector space to construct a seareh function to estimate the signal dire-ction of arrival,Computer simulation shows the efflaency of this approach.