中文说明：
matlab编程完成一GPS网的平差计算。起算数据见文件“起算数据.TXT”；GPS网略图见“网图.jpg”；基线向量观测值和方差见“基线.bas”。根据已知起算数据和观测值建立数学模型并进行最小二乘平差计算和精度评定。代码和计算结果在实习报告中也已详细列出。
English Description：
Matlab programming completes the adjustment calculation of a GPS network. The initial data is shown in the file "initial data. TXT"; the GPS network sketch is shown in "network map. JPG"; the baseline vector observation value and variance are shown in "baseline. Bas". According to the known starting data and observation values, the mathematical model is established, and the least square adjustment calculation and accuracy evaluation are carried out. The code and calculation results are also listed in detail in the internship report.