University of Illinois Urbana-Champaign

Direct position tracking in GPS using vector correlator

Ramesh Kumar, Athindran

Content Files
RAMESHKUMAR-THESIS-2015.pdf

Permalink

https://hdl.handle.net/2142/88087

Description

Title
Direct position tracking in GPS using vector correlator
Author(s)
Ramesh Kumar, Athindran
Issue Date
2015-07-21
Director of Research (if dissertation) or Advisor (if thesis)
Gao, Grace Xingxin
Department of Study
Electrical & Computer Engineering
Discipline
Electrical & Computer Engineering
Degree Granting Institution
University of Illinois at Urbana-Champaign
Degree Name
M.S.
Degree Level
Thesis
Date of Ingest
2015-09-29T20:38:43Z
Keyword(s)
  • Direct position tracking
  • Vector correlator
Abstract
Traditional GPS receivers track the code and carrier of individual satellite signals and estimate the position and velocity of the receiver using trilateration. Different from this two-step approach, direct maximum likelihood estimation of position has proved to be beneficial in weak signal and multipath environments. In this thesis, an architecture of a direct position tracking loop that maximizes an approximation to the maximum likelihood cost function is presented. The unscented Kalman filter is used for direct position tracking using the vector correlator sum. This technique of maximizing the vector correlation sum proves to be beneficial in certain kinds of multipath environments. Further, the tracking loop architecture is validated using experiments with a software receiver.
Graduation Semester
2015-8
Type of Resource
text
Permalink
http://hdl.handle.net/2142/88087
Copyright and License Information
Copyright 2015 Athindran Ramesh Kumar

Owning Collections

Graduate Dissertations and Theses at Illinois PRIMARY
Graduate Theses and Dissertations at Illinois
Dissertations and Theses - Electrical and Computer Engineering
Dissertations and Theses in Electrical and Computer Engineering