Interference Benefits of a Vector Delay Lock Loop (VDLL) GPS Receiver

Abstract

The interference benefits of a vector delay lock loop (VDLL) GPS receiver are compared by simulation over those of a conventional receiver as a first step before hardware implementation. Besides improvement to interference performance, other benefits to the user include: no additional hardware, no increase in power requirements, no increase in weight, and no decrease in reliability. In addition simulation results show a VDLL receiver can implement different filter bandwidths to accommodate differences that may be expected in vertical and horizontal motions. A conventional receiver can not do this. VDLL can be implemented as part of an ultra-tightly coupled or a deeply integrated GPS receiver so that if the inertial system degrades or fails, the receiver has the interference benefits of VDLL.

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Document Details

Document Type
Technical Report
Publication Date
Jan 01, 2007
Accession Number
AD1107340

Entities

People

  • Don Benson

Organizations

  • MITRE Corporation

Tags

Communities of Interest

  • Space

DTIC Thesaurus Topics

  • Accuracy
  • Artificial Satellites
  • Astronautics
  • Attenuation
  • Bandwidth
  • Discriminators
  • Environment
  • Equations
  • Errors
  • Filters
  • Frequency
  • Global Positioning Systems
  • Inertial Measurement Units
  • Inertial Navigation
  • Inertial Navigation Systems
  • Kalman Filters
  • Line Of Sight
  • Measurement
  • Navigation
  • Navigational Equipment
  • Noise
  • Reliability
  • Satellite Constellations
  • Simulations
  • Spacecraft

Fields of Study

  • Engineering

Readers

  • Positioning, Navigation, and Timing (PNT) Technology.
  • Radio communications and signal processing.
  • Robotics and Automation.

Technology Areas

  • Space
  • Space - Spacecraft Maneuvers