对于不同GNSS星历生成ARAIM性能，并完成多星历双接收机时钟偏差的故障假设。在GPS星历中计算“普通地表”坐标系中的卫星位置。(For different GNSS ephemeris generation ARAIM performance, fault hypothesis and complete calendar double satellite receiver clock bias. In the GPS ephemer

ARAIM算法的描述和实现，介绍ARAIM算法还有其他算法。(Descr iption and implementation of ARAIM algorithm. Introduce ARAIM algorithm and other algorithms.)