能够建立一个最紧最合适的关于目标节点与测量节点之际的几何关系，以达到提高二维无线定位精度的目的。-In wireless location systems the geometry between target and mea-suring points influences the positioning accuracy of the target. It is usually quantified by the geometric dilution of precision (GDOP).

侧向定位蒙特卡洛仿真GDOP分析，验证了数据融合方法的精度-GDOP lateral positioning Monte Carlo simulation analysis to verify the accuracy of the data fusion methods

GDOP metric document

GDOP error document for reference