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Evaluation of GNSS Signal-in-Space Continuity:A Weibull-Distribution-Based Method

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Chinese Journal of Electronics 2018年第3期27卷 634-640页

作者： LI Rui zheng shuaiyong WANG Zhipeng TANG Yang SUN Si HUANG Zhigang School of Electronic and Information Engineering Beihang University Collaborative Innovation Center of Geospatial Technology

Signal-in-space(SIS) continuity is an important performance index of Global navigation satellite system(GNSS). However, the studies on the continuity of GNSS SIS are limited both at home and abroad, and are mainly based on the exponential distribution method. We first employ this method to analyze SIS failures of GPS and BDS, finding that this method is not flexile when describing the characteristic of GNSS SIS failures and the fitting characteristic of this method is not well. Therefore, we propose a method based on Weibull distribution to evaluate the performance of GNSS SIS continuity. Our method is compared with the models of exponential distribution, normal distribution, and Gamma distribution regarding the fitting characteristics of the interruption time interval of GPS SIS, the critical parameter of continuity. Results show that the fitting characteristic of the Weibull-distributionbased method is the best and can be used in various forms to describe reliability problem. Then our method is used to evalute the SIS continuity of BDS and GLONASS and its effectiveness and rationality are validated again. The contributions of our study lie in the development of a practical method for evaluating GNSS SIS continuity and a reference for GNSS performance.

关键词： GNSS SIS continuity Evaluation Exponential distribution Weibull distribution

Advances in BeiDou Navigation Satellite System(BDS)and satellite navigation augmentation technologies

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Satellite Navigation 2020年第1期1卷 126-148页

作者： Rui Li shuaiyong zheng Ershen Wang Jinping Chen Shaojun Feng Dun Wang Liwen Dai School of Electronic and Information Engineering Beihang UniversityNo.37 Xueyuan RoadHaidian DistrictBeijingChina Suzhou Institute Beihang UniversitySuzhou 215200China College of Electronic and Information Engineering Shenyang Aerospace UniversityNo.37 Daoyi South StreetDaoyi DistrictShenyangChina Beijing Satellite Navigation Center No.22 Beiqing RoadHaidian DistrictBeijingChina Qianxun Spatial Intelligence Inc. C5 BuildingNo.1688-38 North Guoquan RoadYangpu DistrictShanghaiChina Space Star Technology Co. Ltd.Blue Lake Industry ParkHaidian DistrictBei-jingChina John Deere-Intelligent Solution Group 20780 Madrona AvenueTorranceCAUSA

Several noteworthy breakthroughs have been made with the BeiDou Navigation Satellite System(BDS)and other global navigation satellite systems as well as the associated augmentation systems,such as the commissioning of the BDS-3 preliminary system and the successful launch of the first BDS-3 GEO satellite which carries the satellite-based augmentation ***,BDS can provide basic services globally,and its augmentation system is also being *** paper gives an overview of BDS and satellite navigation augmentation *** overview is divided into four parts,which include the system segment technologies,satellite segment technologies,propagation segment technologies,and user segment *** each part,these technologies are described from the perspectives of preliminary information,research progress,and ***,the significance and progress of the BeiDou Satellite-based Augmentation System(BDSBAS),low earth orbit augmentation,and the national BeiDou ground-based augmentation system are presented,along with the airborne-based augmentation ***,the conclusions and discussions covering popular topics for research,frontiers in research and development,achievements,and suggestions are listed for future research.

关键词： BeiDou Navigation Satellite System Satellite navigation augmentation systems System segment technologies Satellite segment technologies Propagation segment technologies User segment technologies

Design of Tracking Loop for Single Antenna Satellite Navigation Receivers under the Situation of Rotation

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Design of Tracking Loop for Single Antenna Satellite Navigat...

Correction to: Advances in BeiDou Navigation Satellite System (BDS) and satellite navigation augmentation technologies

第九届中国卫星导航学术年会

作者： Dan Song Shengqun Geng Zhigang Huang shuaiyong zheng

It is necessary to measure the real-time rotation speed and the roll angle of a projectile relative to the geodetic coordinate system in order to achieve accurate guidance. To obtain the rotation speed of the projectile, a single antenna satellite receiver is used to receive the satellite signal. Since the received signal can provide amplitude modulation information relative to the roll characteristic of projectile, the signal can be demodulated to determine the rotation speed of the projectile. According to this principle, a real-time tracking loop of the satellite receiver which consists of a rotation tracking loop and a traditional tracking loop is designed to track satellite signal. Simulations under different rotation speed of projectile with single antenna satellite receiver were carried out. The mean values of relative error of projectile rotation speed are 5% and 3%, respectively, when the rotation speed of the projectile is 20 r/s and 100 r/s, which can meet general engineering requirements. It is suited for the rotation speed(angle) measurement of a rotating object. The main contributions of this paper are a reference for the receiver tracking loop de-sign of military artillery and a method to measure the rotation speed of a rotating object.

关键词： Projectile Rotation speed Tracking loop Single antenna satellite receiver

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Satellite Navigation 2020年第1期1卷 149-150页

Correction to:Satell Navig(2020)1:12 https://***/10.1186/s43020-020-00010-2 In the original publication of this article(Li et al.2020),there are several corrections as below:*** the first paragraph of this article,the sentence“In recent years,China has been actively promoting the con-struction and development of the BeiDou Navigation Sat-ellite System(BDS),and by the end of the year 2000 the construction of BDS-1 was complete and BDS-1 began to provide GPS services for China.”should be changed into“In recent years,China has been actively promoting the construction and development of the BeiDou Navigation Satellite System(BDS),and by the end of the year 2000 the construction of BDS-1 was completed and BDS-1 began to provide services for China.”The word“GPS”should be removed.

关键词： China. BeiDou BDS

Potential Performance of Satellite-Based Augmentation System Based on CMONOC in China

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Potential Performance of Satellite-Based Augmentation System...

Review of the Ionospheric Error Correction Techniques in Satellite Navigation

第十三届中国卫星导航年会

作者： shuaiyong zheng Mengzhi Gao Kun Li Xiaoqin Jin Juan Qin Dan Xia Department School of Integrated Circuit Science and Engineering Tianjin University of Technology Tianjin Navigation Instrument Research Institute

To satisfy the requirement of aviation navigation, many countries are committed to the development of Global Navigation Satellite System（GNSS） augmentation systems, especially Satellite-Based Augmentation System（SBAS）, to improve the accuracy, integrity, continuity and availability of GNSS. SBAS has been an important solution to improve the comprehensive performance of GNSS for many years. Typically, SBAS in North America and Europe can provide Localizer Performance with Vertical guidance 200（LPV200） services for their civil aircraft. The services provided by SDCM, MSAS, KASS and GAGAN have been gradually covering the surroundings of China. As both the SF service and the DFMC service provided by BeiDou Satellite-Based Augmentation System（BDSBAS） are being tested, it is urgent to perform the research of SBAS to provide technical support for the construction and subsequent performance improvement of BDSBAS. To improve the processing efficiency of BDSBAS, an architecture of system segment is designed for BDSBAS. Also, considering the problem that it is difficult to guarantee the satellite integrity in the edge area of the monitoring network, a pseudorange residual and satellite-station geometry-based method is proposed to perform satellite integrity monitoring. Results reveal that compared with the direct statistic method, the integrity bounding rate in the pseudorange domain and the availability in the position domain are improved by 45.39% and 2.32% respectively. The designed system can provide Approach Procedure with Vertical Guidance-I（APV-I） services for most parts of China and even LPV200 services for some parts of China.

关键词： Satellite-Based Augmentation System System Segment Satellite Corrections Satellite Integrity Service Performance

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Review of the Ionospheric Error Correction Techniques in Sat...

第十四届中国卫星导航年会

作者： Xihao Han Jianlei Yang shuaiyong zheng Mengzhi Gao Zhigang Huang Xiaoqin Jin Kun Li Peng Yang Zhonghao Zuo Department School of Integrated Circuit Science and Engineering Tianjin University of Technology The 54th Research Institute of China Electronics Technology Group Corporation State Key Laboratory of Satellite Navigation System and Equipment Technology School of Electronic and Information Engineering Beihang University College of Artificial Intelligence Nankai University School of Computer Science and Engineering Tianjin University of Technology

Ionospheric error seriously affects the positioning accuracy of the global navigation satellite ***,BDS,Galileo and GLONASS all adopt different ionospheric error correction *** ionospheric error correction methods in satellite navigation are introduced,and the principle and development of single frequency ionospheric error correction,dual-frequency ionospheric error correction and multi-frequency ionospheric error correction are summarized in this *** the single frequency correction,the grid ionospheric model,Klobuchar model,IRI constraint model and Ne Quick model are summarized,the BDGIM model further improves the ionospheric error correction accuracy on the base of the grid ionospheric model correction by ameliorating spherical harmonics,the Kriging interpolation method improves the interpolation accuracy of the grid ionospheric model correction;In the dualfrequency correction,the ionosphere-free model and the ionospheric error correction methods in the PPP-RTK technology are summarized;In the multifrequency correction,the optimization and improvement of ionospheric error correction technique with the high order correction and geomagnetic field model are ***,the ionospheric error correction techniques and their derivative are analyzed and encapsulated,the development trend and future hotspots of ionospheric error correction technology in satellite navigation are listed and analyzed.

关键词：

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SBAS星历星钟增强技术研究

测绘学报 2023年第7期52卷 1231-1231页

作者：郑帅勇天津理工大学集成电路科学与工程学院天津300384

随着全球卫星导航系统(Global Navigation Satellite System,GNSS)的发展,GNSS逐渐被应用于航空导航服务。为了满足航空导航性能要求,世界各国致力于GNSS增强系统尤其是星基增强系统(satellite-based augmentation system,SBAS)的研究,以提升GNSS的精度、完好性、连续性和可用性。SBAS已成为提升GNSS综合性能尤其是完好性的重要解决措施。美国和欧洲的SBAS已经能够为航空用户提供垂直引导的定位器性能标准(localizer performance with vertical guidance 200,LPV200)等级导航服务,SDCM、MSAS、KASS和GAGAN等SBAS所提供的导航服务信号也逐渐覆盖中国周边地区。

关键词：全球卫星导航系统星基增强系统导航服务完好性航空导航性能标准导航性能定位器

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基于Arduino Mega2560的指纹锁设计

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国外电子测量技术 2020年第3期39卷 109-113页

作者：王瑜白重阳郑帅勇周子为西安航空学院机械工程学院西安710077

针对指纹锁在军队、金融机构、科研机构、博物馆、办公楼、民用住宅等场合应用十分广泛,设计了一款指纹锁。系统主要由以下4部分组成,Arduino Mega2560作为系统控制核心;40系列光学指纹模块作为指纹传感器,对指纹进行录入、处理和对比验... 详细信息

针对指纹锁在军队、金融机构、科研机构、博物馆、办公楼、民用住宅等场合应用十分广泛,设计了一款指纹锁。系统主要由以下4部分组成,Arduino Mega2560作为系统控制核心;40系列光学指纹模块作为指纹传感器,对指纹进行录入、处理和对比验证,同时要把录入的指纹特征存入指纹库;OLED液晶显示器显示指纹信息;L298N电机驱动模块驱动门锁中的直流电机,对其进行正反转控制,从而达到开锁和关锁的目的。通过大量实验验证,该指纹锁智能化程度高、使用方便、指纹容量大、指纹录入时间短、开锁时间短,能够准确识别系统录入的指纹,并开锁。

关键词： Arduino Mega2560 指纹锁 OLED L298N

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卫星导航中电离层误差校正技术现状与发展

全球定位系统 2024年第2期49卷 111-126页

作者：韩喜豪郑帅勇杨建雷靳晓伟高孟志黄智刚李琨杨鹏天津理工大学集成电路科学与工程学院天津300384 中国电子科技集团第五十四研究所石家庄050081 卫星导航系统与装备技术国家重点实验室石家庄050081 辽宁工程技术大学软件学院辽宁阜新125105 北京航空航天大学电子信息工程学院北京100191 天津理工大学计算机科学与工程学院天津300384

电离层误差严重影响着GNSS的定位精度,GPS、BDS、Galileo、GLONASS有不同的电离层误差校正方法.全文概述了电离层误差校正方法,综述了单频电离层误差校正、双频电离层误差校正及多频电离层误差校正等技术的原理与发展现状.在单频电离层... 详细信息

电离层误差严重影响着GNSS的定位精度,GPS、BDS、Galileo、GLONASS有不同的电离层误差校正方法.全文概述了电离层误差校正方法,综述了单频电离层误差校正、双频电离层误差校正及多频电离层误差校正等技术的原理与发展现状.在单频电离层误差校正技术中总结了增强系统中的电离层误差校正技术、北斗全球电离层延迟修正模型(BeiDou global ionospheric delay correction model,BDGIM)、Klobuchar模型、单频电离层误差校正技术的优化—附加国际参考电离层(international reference ionosphere,IRI)约束模型和NeQuick-G模型;在双频电离层误差校正技术中重点总结了双频消电离层误差、无电离层组合模型及PPP-RTK技术中电离层误差校正方法;在多频电离层误差校正技术中介绍了高阶项改正和地磁场建模对电离层误差校正技术的优化与改进.最后,对电离层误差校正技术及其改进方法进行了分析,总结了其发展趋势与方向.

关键词：卫星导航电离层误差校正北斗全球电离层延迟修正模型(BDGIM) Kriging插值法无电离层组合模型地磁场建模

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