Locata单点定位精度研究

介绍Locata伪距和载波相位单点定位的方法。通过仿真数据和试验，分析基准站个数对定位精度的影响，比较伪距定位和观测值组合定位的精度，验证了载波相位定位结果的稳定性。分析表明，Locata静态单点定位的精度可以达到cm～mm级。

Research on the Accuracy of Locata Single Point Positioning

Locata is a new territorial radio positioning technology. It is a great break through because GNSS cannot offer high\|precision positioning results in the “difficult area” where visible satellites are less than 4, whereas Locata can. It has great practical prospect in fields such as deformation monitoring, machine automation, urban and indoor positioning. This paper introduces methods of pseudorange and carrier phase point positioning with Locata. Based on simulation data and experiments, the paper analyses the influence of reference station number on positioning accuracy, compares the accuracy of pseudorange positioning and observed value combination positioning. It testifies that results of carrier phase positioning are stable. Experimental results indicate that the accuracy of Locata static point positioning can reach the centimeter to millimeter level.