关键词: 位置基准, PPLI消息, 时间质量, 位置质量, 几何因子

Abstract:

Link16 is an important military data link used in of America,integrating the three major functions of communications,navigation and identification.The Link16 relative location recursion filter uses serial working manner so as to adapt TDMA scheme,and thus requires an introduction of initial value of relative location.But inadequate arrangement of Link16 position reference around leads to calculation errors of initial value of location.This paper analyses the conditions that cause the calculation errors of initial value of location and brings forward some methods for avoiding such errors.Simulation result indicates that these methods can effectively prevent the occurrence of calculation errors of initial value of location.

Key words: position reference;PPLI message;time quality;position quality;geometry factor