However. The effective aperture of array will be reduced because the ability of decorrelation was gain based on sacrificing the effective number of arrays, and, in the circumstance of lower SNR(signal-noise-ratio) , the estimation performance is deteriorated.

对相干信号源的DOA估计具有理想的性能,其计算量小,便于实现,但它是通过牺牲阵列有效阵元数来换取解相干能力的,阵列孔径有一定的损失,且在低信噪比条件下算法性能较差。

Since the correlation matrix of a signal in wavelet domain has sparse structure, the convergence speed of equalizer can be improved by using this good decorrelation ability of wavelet transform.

由于信号经过小波变换后的自相关阵呈稀疏的带状结构，因此可以利用小波变换的这种去相关能力来提高该均衡器的收敛速度。

The testing results show that 10-m accuracy in elevation can be obtained with InSAR. The main limiting factors are temporal decorrelation and atmospheric contamination.

研究结果表明:卫星雷达干涉DEM的高程精度可以达到10m以内,并且受时间失相关和大气延迟等因素的影响较为严重。