GNSS双差定姿模型的精化

摘要

GNSS double difference gesture determination model was extended to precise positioning of kilometers long baselines. The systematic error existing in the GNSS geometry model was point out. This systematic error, if was over looked, would cause fatal consequence for kilometers long baseline precise positioning. The revision meth-od for this systematic error was proposed, and the GNSS geometry model was improved by this revision. Two serials of experimental data were used to compare the performance of the original and revised GNSS double difference ges-ture determination model, the result had testified the revised model was superior to the original one.%把GNSS双差定姿模型推广到km级短基线精密解算。指出常用的GNSS双差定姿模型存在几何上的系统偏差，该系统偏差严重影响km级基线的精密定位解算。提出了修正该系统偏差的方法，并把修正量加入定位模型，提高了模型的精确程度。采用两组实验数据分别对修正前和修正后的模型进行比较，验证了改进效果。