CAJ | 학술논문

针对卫星实际运行过程中可能出现异常的情况，提出了一种基于互差的卫星完好性检测新方法。首先验证卫星伪距偏差与卫星完好性的关系，并建立一个互差基准量；其次，同一历元，卫星伪距偏差对基准量作差，建立一个卫星完好性检测量；最后，根据检测量是否在其值域范围内判断对应卫星的完好性。经实验验证，该方法能够及时、准确检测出故障卫星，有效地保证了用户的定位精度。
침대위성실제운행과정중가능출현이상적정황，제출료일충기우호차적위성완호성검측신방법。수선험증위성위거편차여위성완호성적관계，병건립일개호차기준량；기차，동일역원，위성위거편차대기준량작차，건립일개위성완호성검측량；최후，근거검측량시부재기치역범위내판단대응위성적완호성。경실험험증，해방법능구급시、준학검측출고장위성，유효지보증료용호적정위정도。
In connection with the probable abnormal situation of satellites in the actual running , a satellite integrity algorithm based on the theory of mutual difference is proposed . First , in this algorithm , the relationship between the pseudo-range bias and satellite integrity is verified , and a reference quantity for mutual difference is established . Second , in the same epoch , the pseudo-range bias minus the reference quantity and a measurement is established for satellite integrity . Last , a judgment of satellite integrity is made according to whether the measurement is within the range of values or not . After the verification by experiment with the real da-ta , the failure satellite is detected timely and accurately and the user position accuracy is guaranteed effectively in this algorithm .