Developing Signal Processing Algorithms for Weak GPS Signal Acquisition in Urban Environment

Abstract

This report describes project progress on developing signal processing algorithms for weak GPS signal acquisition in typical urban environment where no more than three satellites are in direct view of a receiver. To successfully determine a user position, signals that are weakened due to presence of man-made and/or natural structures needs to be acquired. This can be a challenge task since the nominal level satellite signals act as interference during the weak signal acquisition. This report documents the progress we have made in accessing and mitigate the interference among satellite signals. The receiver platform with which we tested our algorithms is a software GPS receiver developed at AFRL/SNRP at WPAFB. As part of the proposed project, we worked on interfacing a portable GPS RF front end with a laptop PC via existing high speed USB2. This report also documents the successful implementation of software driver functions for the USB interface and other related projects.

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Document Details

Document Type
Technical Report
Publication Date
Sep 18, 2004
Accession Number
ADA426847

Entities

People

  • Yu T. Jade Morton

Organizations

  • University of Miami

Tags

Communities of Interest

  • C4I
  • Energy and Power Technologies
  • Human Systems
  • Sensors
  • Space

DTIC Thesaurus Topics

  • Accuracy
  • Acquisition
  • Air Force Research Laboratories
  • Algorithms
  • Computer Programs
  • Computers
  • Control Systems
  • Data Acquisition
  • Electrical Engineering
  • Environment
  • Measurement
  • Motion Planning
  • Network Architecture
  • Neural Networks
  • Signal Processing
  • Target Recognition
  • Vector Magnetometers

Readers

  • Computer Science/Computer Engineering/Data Science/Digital Signal Processing.
  • Positioning, Navigation, and Timing (PNT) Technology.
  • Sensor Fusion and Tracking Systems.

Technology Areas

  • Space