干涉仪基线的常规布设方式为基线长度递增式布设,故其方向余弦的测量精度基本上取决于最长基线。本文提出另一种布设方式,即取多对基线长度都接近于最长基线,从而能得到n个方向余弦的精测值(n为基线条数),使得整个干涉仪的方向余弦测量精度得以提高。而测相模糊问题采用最大似然法解决。通过计算机的模拟试验,表明这种基线布设方式和基线匹配方式是可行的。 The conventional arrangement of the interferometer baseline is based on the increment of the baseline length, so the measurement accuracy of the direction cosine basically depends on the longest baseline. In this paper, another layout method is proposed. That is, taking multiple pairs of baseline lengths close to the longest baseline, we can get fine measured values ​​of n-direction cosines (n is the number of baseline), so that the direction cosine measurement accuracy of the whole interferometer improve. The measurement of phase ambiguity using maximum likelihood method to solve. Through the computer simulation test, it shows that this method of baseline layout and baseline matching is feasible.