Hebei Satellite Navigation Technology and Equipment Engineering Technology Research Center

Shijiazhuang, China

Hebei Satellite Navigation Technology and Equipment Engineering Technology Research Center

Shijiazhuang, China

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Ye H.,China Institute of Technology | Ye H.,Hebei Satellite Navigation Technology and Equipment Engineering Technology Research Center | Dong L.,China Institute of Technology | Dong L.,Hebei Satellite Navigation Technology and Equipment Engineering Technology Research Center | And 2 more authors.
Lecture Notes in Electrical Engineering | Year: 2013

Multi GNSS Simulator provides the technical means and environments in those areas as the framework designing for navigation systems, study of effects of signal propagation environments, ground testing and verification of Compass navigation system. As a satellite navigation testing device, high-performance multi-mode satellite navigation signal generators includes many essential technologies as multi-system constellation simulation, signal propagation environment effects simulation, user movement characteristic simulation, antenna characteristic simulation, high-precision navigation signal simulation, thus brings the challenges for the high-precision, accurate, objective and just assessment and testing. The article based on the generator project, studies the testing and assessment system for the generators and preliminarily determines complete assessment means and testing guidelines, particularly in the study of processing and analysis method of applying standard equipments such as high-speed signal sampler. The generator has gone through the testing of the control resolution of generator's pseudo ranges and passed the actual testing and verifications. © 2013 Springer-Verlag Berlin Heidelberg.


Wang Y.,China Institute of Technology | Wang Y.,Hebei Satellite Navigation Technology and Equipment Engineering Technology Research Center | Yu B.,Hebei Satellite Navigation Technology and Equipment Engineering Technology Research Center
Lecture Notes in Electrical Engineering | Year: 2013

The Radio Frequency Interference (RFI) was one of the main problems faced by Global Navigation Satellite System (GNSS), However, there were several limits in current RFI assessment method. Based on Multilevel Coded Spreading Symbols (MCS) Signal, a generic signal baseband model was constructed. On the basis of research of A/D model, interference coefficient model, effective C/N0 model, receiving sensitivity model and ranging error model including interference, a improved RFI evaluation method was proposed. Meanwhile, some important models in evaluation method were analyzed by simulation, and some useful results were got. The achievement by this paper would guide the frequency coordination negotiation between Compass and other GNSSs. © 2013 Springer-Verlag Berlin Heidelberg.


Zhou B.-L.,Beijing Institute of Technology | Zhou B.-L.,Shanghai Institute of Satellite Engineering | Ren Y.-Y.,University of South China | Wang C.,Hebei Satellite Navigation Technology and Equipment Engineering Technology Research Center | And 2 more authors.
Beijing Ligong Daxue Xuebao/Transaction of Beijing Institute of Technology | Year: 2010

A kind of Galileo pseudolite signal format is described. For pulsed pseudolite signal receiving, we propose two pulse synchronization methods: the segmented FFT method and the pulse pattern matching method. By taking advantage of segmented correlation between receiving pulse and local pulse, the segmented FFT method obtains timing information of receiving pulsed signal through segmented FFT operation; and the pulse pattern matching method achieves synchronization by using the pseudo-random property of pulse pattern. For comparison, the simulation is conducted and the results indicate that the pulse pattern matching method has the best false alarm performance when receiving the Galileo E1 signal and the segmented FFT method has the shortest average acquisition time. Both methods can effectively improve the performance of pseudolite receiver.


Wang Y.,Harbin Engineering University | Wang Y.,Hebei Satellite Navigation Technology and Equipment Engineering Technology Research Center | Yu B.-G.,Hebei Satellite Navigation Technology and Equipment Engineering Technology Research Center | Luo X.-Z.,Hebei Satellite Navigation Technology and Equipment Engineering Technology Research Center | And 2 more authors.
Xi Tong Gong Cheng Yu Dian Zi Ji Shu/Systems Engineering and Electronics | Year: 2010

Traditional methodology for assessing multi-mode global navigation satellite systems (GNSS) is only suitable to analyzing compatibility of the signal which has long code, high code rate and data rate. Through deducing signal model and discussing the influence of data rate and the pseudo code of the navigation signals onto SSC, a more accurate methodology for assessing GNSS compatibility is proposed. This methodology, which includes Doppler effects and takes into account all the satellite navigation signals in the same frequency with expected signal, is suitable for all types of satellite navigation signals. And it is proved by analyzing GPS intrasystem and intersystem interference. The results show that the interference of E1 OS to GPS C/A is limited in 0.1 dB.


Luo X.,China Electronics Technology Group Corporation | Luo X.,Hebei Satellite Navigation Technology and Equipment Engineering Technology Research Center | Fan G.,China Electronics Technology Group Corporation | Fan G.,Hebei Satellite Navigation Technology and Equipment Engineering Technology Research Center
Gaojishu Tongxin/Chinese High Technology Letters | Year: 2015

The spoofing detection was studied to meet the needs of satellite navigation systems' anti-spoofing, and a multi-antenna based spoofing detection algorithm was put forward to solve the problem that conventional spoofing detection methods are only used to deal with specific spoofing detections. The algorithm estimates the multi-array element signal direction by the power amplifying of the dispreading signal of the spoofing signal & local code, and realizes the multi- array elements spoofing detection by comparing to the satellite position from the ephemeris. Furthermore, based on the priori knowledge of the satellite navigation receiver system, this algorithm can realize a spoofing detection with high precision. The simulation results showed that the algorithm achieved a good detection result for spoofing and transmitting interference. ©, 2015, Inst. of Scientific and Technical Information of China. All right reserved.


Wang Y.,Harbin Engineering University | Wang Y.,Hebei Satellite Navigation Technology and Equipment Engineering Technology Research Center | Yu B.-G.,Hebei Satellite Navigation Technology and Equipment Engineering Technology Research Center | Ge X.,PLA Unit 61081 | Luo X.-Z.,Hebei Satellite Navigation Technology and Equipment Engineering Technology Research Center
Xitong Fangzhen Xuebao / Journal of System Simulation | Year: 2012

With the building and the modern update of global or regional satellite navigation systems, more and more signals take the crowded radio navigation satellite system band. The compatibility problem has become prominent increasingly. On the basis of the establishment of the space section, user section and environment section in high accuracy, a software implementation about GNSS compatibility was offered. A Matlab based GNSS compatibility software architecture was given, and in which the modules were described in detail. Finally, the compatibility of Compass, GPS and Galileo system in L1 band was simulated. It offers that intrasystem interference about GPS L1C/A signal is the most important one, which is 3.71dB. Moreover, the intersystem interferences of GPS to other systems are all bigger, about 2dB. Meanwhile, the ones of Galileo to other systems are smaller, less than 0.6dB.


Wang Y.,Harbin Engineering University | Yu B.,Hebei Satellite Navigation Technology and Equipment Engineering Technology Research Center | Luo X.,Hebei Satellite Navigation Technology and Equipment Engineering Technology Research Center
2010 IEEE International Conference on Mechatronics and Automation, ICMA 2010 | Year: 2010

Compatibility Analysis of satellite navigation systems has become a research hotspot in recent years. Spectral separation coefficient (SSC), which is one of the most important quantities in GNSS compatibility, has been widely studied. In fact, it is suitable for impact of interfering on the receiver process steps which use prompt correlator channel, but it doesn't reflect the impact of code tracking processing. A code-tracking-based compatibility methodology is proposed, in which the code tracking spectral sensitivity coefficient (CT-SSC) is derived. Different from traditional compatibility methodology, this method does not only relate to power spectral density of desired signals and interfering signals, but also relates to early minus late spacing width. And through the analysis, it shows that the CT-SSCs can even vary 14dBs within one chip spacing and are larger than SSCs up to 5dBs for specific pairs of desired and interfering signals. Finally, the intra and intersystem interferences in GPS L1 band are simulated by both traditional and code-tracking-based compatibility methodology. It is concluded that the former would underestimate intra and intersystem interference. © 2010 IEEE.

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