Dissertation > Excellent graduate degree dissertation topics show

Study on RTCM Encoding and Message Predefinition for COMPASS System

Author: HuangYunQian
Tutor: ChengPengFei；CaiYanHui
School: Chinese Academy of Surveying and Mapping
Course: Geodesy and Survey Engineering
Keywords: RTCM Differential GNSS Parity algorithm COMPASS
CLC: P228.4
Type: Master's thesis
Year: 2009
Downloads: 112
Quote: 0
Read: Download Dissertation

Abstract


Differential GNSS technology is a technology more widely used in satellite navigation and positioning. User by receiving differential corrections from the reference station to be able to eliminate or weaken most of the errors. Differential corrections from the reference station by a certain data link transmission to the differential user, you need to consider the differential corrections which format to reach the user through the data link layer, as well as how to ensure the correctness and completeness of the data transmission differential . The continuous progress of the means of communication, so that the rapid and accurate transmission of differential GNSS data possible. The use of the Internet or wireless networks, the mobile receiver can obtain real-time through the network remote GNSS reference station differential corrections to improve the positioning accuracy. For Differential GNSS Service the RTCM standard protocol is the standard protocol for international maritime cause of the Radio Technical Commission (RTCM, Radio Technical Commission for Maritime Services) differential GNSS services in order to improve and promote differential GNSS business. Through continuous development, RTCM differential satellite navigation system standard has become a world-wide range of applications. RTCM 2.3 standard version, the various problems encountered in the use of this standard in the study coded assessment of the parity algorithm on the basis of data correctness and completeness of the RTCM message type coding system design. Beidou navigation system the COMPASS gradually building development of the status quo, in the analysis of the study on the basis of the existing GPS and GLONASS message types, according to the the COMPASS specific signal structure characteristics, try to put the RTCM message format for COMPASS system, in order to make our COMPASS system Users can use this differential GNSS standard differential positioning. The introduction part of this article briefly describes the course of development of the existing differential GNSS differential protocols and RTCM standard. And the necessary instructions to the main content of this article. The second chapter describes the development of the global navigation satellite system, focusing on the progress of China's satellite navigation system. Discussed the principle of differential GNSS positioning technology; brief description of the the RTCM data transmission protocol NTRIP; final narrative encoding the basic theory. The third chapter introduces RTCM 2.3 standard data format of the message type, to discuss the problems encountered in the the RTCM coding process, and, ultimately, the program design of the coding procedures. The fourth chapter discusses the characteristics of China's Beidou navigation and positioning system, the COMPASS system of RTCM message standard format on the basis of the analysis of the existing GPS and GLONASS message types. Chapter V summarizes this paper research content and research results, and prospects for future research work. The main findings of this paper: 1. RTCM 2.3 version of the commonly used message encoding program. RTCM 2.3 standard message format analysis of coding rules, the general rule of parity algorithm, byte scroll byte format. Differential Corrections extracted from the original observation data to populate data encoded in accordance with the RTCM message format, encoded program; 2. Explore how to use the Hamming code for error detection and correction control RTCM message, the validity of the parity algorithm analysis; 3. the COMPASS system RTCM predefined message format. To discuss existing RTCM2.3 version based on the analysis of GPS and GLONASS message type structure defined. China's second-generation Beidou navigation satellite system COMPASS satellites structure, signal structure, analyzes the characteristics of the adopted coordinate basis, try to put the eight kinds of support RTCM standard message types. And given the specific structural design of the part of the message type.

Related Dissertations

  1. The Research of Radio and Television Timing System on the Basis of Beidou Satellite and ZigBee Communication Technology,TN948
  2. Portable wind measurement instrument,P414.7
  3. Principle and Algorithm Research for MAC,P228.4
  4. The Research about Location and Guidance of Differential Wheel Mobile Robot Based on PID,TP242
  5. Research on an Automatic Navigation System for Field Weeding Robot,TN967.2
  6. The smart positioning device C8051F120 multi-sensor fusion - based design,TP212.9
  7. The Design and Research of Minor Fluxgate Sensor,TP212
  8. Research of Suppression Electromagnetic Interference in Airborne Radio Compass,TN965
  9. Research and Development of Vehicle Directional Anttena Stabilization and Tracking Platform,TP242
  10. Research on Sins/GPS/Magnetic Compass Integrated Navigation System,TN967.2
  11. The Researching and Implementing of Intergraded Arithmetic in Active Positioning System,P228.4
  12. Molecular Simulation Study of the Structure of Shendong Vitrinite and the Adsorption of CH4, CO2 and H2O,P618.11
  13. Heading Estimation of Humanoid Robot’s Electronic Compass,TP242
  14. The Research of the Embedded Navigation System Based by Windows CE Platform,TN966
  15. Design and Research on Errors Compensation of the Reluctance Digital Compass Based on SOPC,U666.151
  16. Study on Initial Alignment Methods of Strapdown Inertial Navigation System,V249.322
  17. Geomagnetic azimuth based Measurement,V241.611
  18. Development of Three-axis Electronic Compass Based-on Magnetoresistive Sensor & Accelerometer,V241.61
  19. Electronic compass measurement error analysis and compensation techniques,TP274
  20. Design and implementation of network resources search system based on Java platform,TP311.52

CLC: > Astronomy,Earth Sciences > Surveying and Mapping > Geodesy > Satellite geodesy and space geodesy > Global Positioning System (GPS)
© 2012 www.DissertationTopic.Net  Mobile