A GPS Digital Phased Array Antenna and Receiver

Abstract

NAVSYS High Gain Advanced GPS Receiver (HAGR) uses a digital beam-steering antenna array to enable up to eight GPS satellites to be tracked, each with up to 10 dBi of additional antenna gain over a conventional receiver solution. This digital, PC-based architecture provides a cost-effective solution for commercial applications where more precise GPS measurements are needed. The additional gain provided on the satellite signals by the HAGR enables sub-meter pseudo-ranges to be observed directly on the C/A code and also improves the accuracy of the GPS carrier phase observations. The directivity of the digital beams created from the antenna array also reduces multipath errors, further improving the accuracy of DGPS corrections generated by the HAGR and the navigation and timing solution computed. This paper describes the beam steering array and digital receiver architecture and includes test data showing the HAGR performance.

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Document Details

Document Type
Technical Report
Publication Date
May 01, 2000
Accession Number
ADA452307

Entities

People

  • Alison Brown
  • Randy Silva

Tags

DTIC Thesaurus Topics

  • Abstracts
  • Accuracy
  • Algorithms
  • Antenna Arrays
  • Arrays
  • Beam Forming
  • Beam Steering
  • Digital Signal Processing
  • Errors
  • High Gain
  • Measurement
  • Navigation
  • Observation
  • Phased Arrays
  • Signal Processing
  • Steering

Readers

  • Phased Array Antenna Design.
  • Positioning, Navigation, and Timing (PNT) Technology.

Technology Areas

  • Space