Multiple-group adjustment method in indirect adjustment

In view of the low accuracy of traditional adjustment, an improved multiple-group adjustment method inindirect adjustment is proposed in this paper. In the process of improved multiple-group adjustment, the first groupis first adjusted, and then the adjustment result of the first group and the observation value of the second group areadjusted together, which makes the results in the first-group adjustment meet the overall adjustment results. Finally, theposteriori unit-weight variance value, the coordinated factor matrix of the adjustment result, and the unknown functionweight reciprocal are calculated. The experimental results show that the accuracy of multiple-group adjustment in theindirect grouping adjustment will be more accurate than the traditional indirect adjustment method. Moreover, thiswork provides important ideas and techniques for handling the goniometric triangular network of control surveys.

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