In view of the fact that the Beidou satellite system is difficult to deploy globally, this paper proposes an autonomous integrity detection method using Kalman filter based on satellite time. A model of atomic clock and time-frequency system is established to analyze errors in inter-satellite measurement data using real in-orbit data of Beidou. Time information is calculated from the distance measurement value of inter-satellite link, and relative clock difference is obtained through the ergodic regression calculation, Kalman filter monitoring algorithm is designed to monitor phase hopping and frequency hopping. Through simulation, monitoring performance of Kalman filter for the phase jump and frequency jump of Beidou satellite in the real inter-orbit link ranging value is analyzed. And according to the range of the abnormal jump, a suitable detection threshold is put forward for engineering practice.
CHEN Tingting, LIN Baojun, GONG Wenbin, FENG Lei, CHANG Jiachao, LIN Xia
. Satellite Time Autonomous Integrity Monitoring Technology Based on Inter-satellite Link[J]. Journal of Applied Sciences, 2019
, 37(6)
: 825
-834
.
DOI: 10.3969/j.issn.0255-8297.2019.06.007
[1] Sun J, Hossain M M, Xu C L. A novel calibration method of focused light field camera for 3-D reconstruction of flame temperature[J]. Optics Communications, 2017, 390:7-15.
[2] 王晶,苏光大. 改进的双目立体视觉正面脸合成[J]. 应用科学学报,2014, 32(1):74-78. Wang J, Su G D. Frontal face synthesis based on improved binocular stereo vision[J]. Journal of Applied Sciences, 2014, 32(1):74-78. (in Chinese)
[3] Peng J Q, Xu W F, Yuan H A. An efficient pose measurement method of a space noncooperative target based on stereo vision[J]. IEEE Access, 2017, 5:22344-22362.
[4] 欧巧凤,赵平均,熊邦书. 基于立体视觉的旋翼共锥度动态测量系统精度分析[J]. 仪器仪表学报,2015, 36(8):1692-1698. Ou Q F, Zhao P J, Xiong B S. Accuracy analysis of the measuring instrument for taper angle of running rotor blades based on stereo vision[J]. Chinese Journal of Scientific Instrument, 2015, 36(8):1692-1698. (in Chinese)
[5] Jia Z Y, Wang L L, Liu W. A field measurement method for large objects based on a multiview stereo vision system[J]. Sensors and Actuators A:Physical, 2015, 234:120-132.
[6] Xiao Z Z, Liang J, Yu D H. An accurate stereo vision system using cross-shaped target self-calibration method based on photogrammetry[J]. Optics and Lasers in Engineering, 2010, 48(12):1252-1261.
[7] Sun J H, Liu Q Z, Liu Z. A calibration method for stereo vision sensor with large FOV based on 1D targets[J]. Optics and Lasers in Engineering, 2011, 49(11):1245-1250.
[8] 刘巍,李肖,马鑫. 采用复合式靶标的近景大视场相机标定方法[J]. 红外与激光工程,2016, 45(7):230-236. Liu W, Li X, Ma X. Camera calibration method for close range large field of view camera based on compound target[J]. Infrared and Laser Engineering, 2016, 45(7):230-236. (in Chinese)
[9] Sun J H, Liu Z, Zhang G J. Camera calibration based on flexible 3D target[J]. Acta Optica Sinica, 2009, 29(12):3433-3439.
[10] Wang Z X, Wu Z Q, Zhen X J. A two-step calibration method of a large FOV binocular stereovision sensor for onsite measurement[J]. Measurement, 2015, 62:15-24.
[11] Liu Z, Li F J, Li X J. A novel and accurate calibration method for cameras with large field of view using combined small targets[J]. Measurement, 2015, 64:1-16.
[12] Yu L, Han Y Y, Nie H. A calibration method based on virtual large planar target for cameras with large FOV[J]. Optics and Lasers in Engineering, 2018, 101:67-77.
[13] Zhang Z Y. A flexible new technique for camera calibration[J]. IEEE Transactions on Pattern Analysis and Machine Intelligence, 2000, 22(11):1330-1334.
[14] Ahmed M, Farag A. Nonmetric calibration of camera lens distortion:differential methods and robust estimation[J]. IEEE Transactions on Image Processing, 2005, 14(8):1215-1230.
