观测量非等权模型RAIM可用性算法研究

Research on RAIM Availability Algorithm with Measurement Unequal Weight Model

针对基于最小二乘残差估计的接收机自主完好性监测(RAIM)算法,结合伪距单点定位多采用观测量非等权模型,提出一种观测量非等权模型RAIM可用性算法,对实际计算具有借鉴意义。通过实测数据,分析了等权模型和非等权模型RAIM可用性算法对卫星几何分布的估计情况,验证了观测量非等权模型RAIM可用性算法的可行性。

Concerning receiver auto integrity monitoring（ RAIM） algorithm based on the least squares, due to pseudo range point posi-tioning generally adopting measurement unequal weight model, a RAIM availability algorithm with measurement unequal weight model is developed, which is meaningful for practical computation.With the measured data, analyzing satellites geometrical distribution eval-uated by equal weight model and unequal weight model, the results demonstrate the feasibility of RAIM availability algorithm with measurement unequal weight model.