不变关系 meaning in Chinese

invariant relation

Because the signals of the target reflections are coherent , the reconstructing matrix algorithm which uses the time - shift correlation method is studied . not only has it the good ability to solve the coherence problem , but it also reduces the computation because of the time - shift correlation instead of the eigenvalue decomposition
由于雷达系统中目标回波具有相关性,必须考虑解相干处理,所以研究了利用时移相关去噪的矩阵重构算法,该算法具有较好的解相干能力,且用时移相关去噪免去了特征分解去噪过程,可直接使用esprit算法求解旋转不变关系,简化了过程,减小了计算量。