Dissertation > Excellent graduate degree dissertation topics show

Quick Ambiguity Resolution of Vrs’s Rover Station

Author: WangCheng
Tutor: YangFan
School: Liaoning Technical University
Course: Geodesy and Survey Engineering
Keywords: Virtual reference station (VRS) Least square estimation OTF Cholesky decomposition LAMBDA Regularization
CLC: P228.4
Type: Master's thesis
Year: 2009
Downloads: 52
Quote: 0
Read: Download Dissertation

Abstract


The flow terminal of VRS realizing real-time and highly accurate location which used to solve the carrier phase station star double difference observation. the basics estimation method is the float solution of double-difference. Double-difference search algorithm is critical. This article discusses the detection and reparation of the phase cycle slip, the carrier phase station star double difference observation and its linearization, adopting least square algorithm to estimate the flow terminal of double integer ambiguity and the covariance matrix. Then discuss and research the covariance method of ambiguity. Especially gives the method of LAMBDA a detail analysis. Also according to the process of the lower correlation transform appear the morbid Z transform propose the improved method of regularization. Finally, according to experiment analyze the paper method. Quickly fix the ambiguity. Finally realize the flow terminal of VRS ambiguity real-time fixed. Details are as follows:Firstly, the GPS phase observation equation is made to linearization, and derive the station star double difference observation. Give the solution of double difference observation.Secondly, introduce the basic principles of covariance ambiguity search. Researching and anglicizing the covariance optimization Cholesky resolution realize the quick search of ambiguity.analyse integer least square ambiguity reduction correlation adjustment. Adopt Cholesky decomposition and the untied Z transform realize the reduction correlation. Thirdly, the morbid state transform is opposite in the process of the method of LAMBDA, this paper proposed covariance regularization method: in the front of reduction correlation integer transform oppose the covariance Tikhonov regularization, effectively improve the reliability solution of double difference ambiguity. Implement the algorithm in this paper. And deflation of experimental data test and verify the feasibility of the algorithm.

Related Dissertations

  1. Learning Rates of Least-square Regularized Regression with Polynomial Kernel on a n-dimensional Simplex,O174.41
  2. Research on Image Reconstruction Algorithm Based on Electrical Impedance Tomography,TP391.41
  3. The Elementary Theory and Software Realization of GPS Baseline Solution,P228.4
  4. The Iterated Tikhonov Regularization Methods for Nonlinear Ill-Posed Problems with Monotone Operators,O177
  5. Learning Rates of Least-square Regularized Regression with Polynomial Kernels on a Simplex,O174.41
  6. Dynamic Changes and Effects of IL-31 in Lung Tissues of Experimental Mice with Pulmonary Fibrosis,R563.9
  7. Volatility Transmission Analysis and Risk Measurement of Main Sector Indices of A Shares Based on Multivariate GARCH Models,F832.51
  8. Super-resolution Reconstruction of Spaceborne Sar Images Using Sparsity Theory,TN957.52
  9. Research on Spectrum Sensing in Cognitive Radio Systems,TN925
  10. Research on Some Variants of Support Vector Machine,TP18
  11. Research on Regularization Techniques in Classifier Design,TP181
  12. Study on Simultaneous Identification of Structural Damage and Load Based on Incomplete Measurements,TU312.3
  13. Research on Parameters Identification of Heat Conductioninverse Problem in the Casting Solidification Process,TG244.3
  14. Research on Numerical Solution Methods for Some Inverse Problems,O241.8
  15. The Numerical Solution for Some Inverse Problems,O241.8
  16. Reconstruction of Distributed Dynamic Loads on Linear Elastic Systems-Theory and Methodology,O347.1
  17. Applications, Modeling Theories of PDEs and Wavelet in Image Processing,TP391.41
  18. Regularization Algorithms for Solving Ill-posed Matrix Equations Arising from Geophysical Inversions,P631
  19. Research on Bregman Iterative Regularization Methods for Image Restoration,TP391.41
  20. Research and Applications of 2-D MT Forward Modeling and Inversion with Topography,P631.325
  21. Land Surface Temperature and Atmospheric Phofile Parameters Retrieval Based on Perturbation Form of Atmospheric Radiative Transfer Equation,TP79

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