Signal-in-space ranging errorAccuracyProbability distributionIntegrity riskThe signal-in-space ranging errors (SISREs), which are mainly dominated by clock errors, are computed for 18 BeiDou-3 (BDS-3) medium earth orbit satellites by comparing broadcast ephemeris values against precise values provided...
Being the first mixed-constellation global navigation system, the global BeiDou navigation system (BDS-3) designs new signals, the service performance of which has attracted extensive attention. In the present study, the Signal-in-space range error (SISR
Signal-In-Space Range ErrorWorst User LocationGeometric Approximation AlgorithmAs one of the most important performance indicator of satellite navigation, Signal-In-Space Accuracy (SISA), which is usually characterized by Signal-In-Space Range Error (SISRE), directly affects......
Signal-In-Space User Range Errors (SIS UREs) are assumed to be overbounded by a normal distribution with a standard deviation represented by the User Range... Z Wang,S Wei,L Rui,... - 《Sensors》 被引量: 0发表: 2018年 Assessment of long-term BDS signal-in-space range error and its...
Signal-in-space (SIS) User Range Error (URE) is one of the major error sources for BeiDou Navigation Satellite System (BDS) applications and can reach tens of meters or even more. Therefore, real-time monitoring of SIS anomalies has a great realistic significance to guarantee the safety of ...
Broadcast ephemeris and clock errors, the differences between the broadcast orbits/clocks and the truth, account for a dominant portion of signal-in-space (SIS) errors. Traditionally, SIS user range errors (UREs) is assumed to follow a zero-mean normal distribution with standard deviation ...
The global average user range error (URE) of BDS-3 (BDS-2) is approximately 0.6 m (1.0 m), which is dominated by satellite-dependent clock bias. When these biases are removed from the clock residuals, the URE can be reduced by 50% and 15% for BDS-3 and BDS-2, respectively. 展开...
Keywords: ARAIM; signal-in-space user range errors; false alert probability; availability 1. Introduction Advanced Receiver Autonomous Integrity Monitoring (ARAIM) can provide global users with integrity monitoring service for vertical guidance [1]. The ARAIM algorithm is affected by several error ...
Equation1forms the basis of most of the state-space-based estimation algorithms [3-6]. The usual practice to derive the gainK[k] is to employ least squares solution [1]. Usually the square of the error is minimized; however, non-mean square errors have also been studied [11]. In this...
The larger orbit errors, resulting in approximately 1–2 m orbit-only UREs (User Range Errors), periodically occur for all satellites every half year when the satellites are in eclipse period. For the GEO and IGSO satellites, several larger orbit errors may be caused by the effect of ...