Nonlinear Estimators for Multi-sensor/ Multi-target Tracking and Synchronization

Abstract

Research was Conducted on code synchronization and jammer suppression for GPS receivers. The modulated lapped transform (MLT) was employed to decorrelate the jammer in time, and better isolate jammer components from the signal in the time-frequency plane. The extended Kalman filter (MLT-EKF) and generalized likelihood ratio test (GLRT) were used to both track and acquire the unknown code delay. Simulation studies for various stationary and swept tone jammers were conducted. It was found that the MLT-EKF could acquire and track the GPS C/A code in the presence of a chirp jammer with a sweep rate of up to 2000 mHz per second.

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Document Details

Document Type
Technical Report
Publication Date
May 04, 2000
Accession Number
ADA377217

Entities

People

  • Ronald A. Iltis

Organizations

  • University of California, Santa Barbara

Tags

Communities of Interest

  • Energy and Power Technologies
  • Materials and Manufacturing Processes
  • Sensors

DTIC Thesaurus Topics

  • Abstracts
  • Acquisition
  • Algorithms
  • Covariance
  • Detectors
  • Electronic Mail
  • Engineering
  • Estimators
  • Frequency
  • Gaussian Noise
  • Intermediate Frequencies
  • Kalman Filters
  • Measurement
  • Multitarget Tracking
  • Noise
  • Target Tracking
  • Time Domain

Fields of Study

  • Engineering

Readers

  • Phased Array Antenna Design.
  • Positioning, Navigation, and Timing (PNT) Technology.
  • Sensor Fusion and Tracking Systems.

Technology Areas

  • Space
  • Space - Space Objects