【摘要】 现有局域机场监视系统(LAM)采用单接收机,健壮性和完好性较差.基于多接收机LAM(MLAM)概念,从地面监测站和机载用户两方面讨论了其完好性.在地面监测站方面,研究了多接收机伪距校正数校验方法;通过地面监测保护级最小原则选择最佳可见卫星组合,减小了机载用户的计算负担.在机载用户方面,考虑系统完好性、连续性和可用性的前提下进行漏检系数计算,精确估计了机载用户保护级,改善了系统的整体性能.实验结果表明,与LAM相比,MLAM的精度和完好性指标都得到了提高.更多还原

【Abstract】 The existing local airport monitor(LAM) with single receiver is not robust,and its integrity is not good enough.Based on multi-receivers local airport monitor(MLAM) concept,its integrity was discussed on both ground monitor station and airborne user.For ground monitor station,the multi-receivers pseudorange corrections verifying method was studied.Through using least monitor protection level principle to choose the optimal visible satellites combination,the computation complex is reduced.As to the airborne user,under the premise of system integrity,continuity and availability,the missed detection coefficient was computed to estimate airborne user protection level and thus improve the system performance.The experimental results demonstrate that,compared to the LAM,the accuracy and integrity of the MLAM are all improved.更多还原