A Doppler Compensation Scheme for RF Communications Useable on Dynamically Retargeted Projectiles

Abstract

The use of dynamic retargeting to modify the impact point of an in-flight projectile is highly desirable for the Future Combat System (FCS). However, communications between the projectile and the ground is complicated by Doppler shift of the Radio Frequency (RF) carrier that is produced by the projectile's speed. Shifts from Ultra-High Frequency (UHF) frequencies can be as high as 7-8 kHz, which would overwhelm typical Frequency Shift Keying (FSK) changes of 1 kHz. This paper proposes a Doppler compensation scheme to allow reliable RF communication between the ground and the projectile, when the projectile includes a Global Positioning System (GPS) receiver.

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Document Details

Document Type
Technical Report
Publication Date
Dec 01, 2004
Accession Number
ADA432014

Entities

People

  • Donald E. Booth

Organizations

  • Tank-automotive and Armaments Command

Tags

Communities of Interest

  • Weapons Technologies

DTIC Thesaurus Topics

  • C Programming Language
  • Central Processing Units
  • Compensation
  • Computer Programming
  • Computer Programs
  • Coordinate Systems
  • Doppler Effect
  • Frequency
  • Frequency Shift
  • Ground Stations
  • Inertial Measurement Units
  • Instruction Set Architecture
  • Navigation
  • Programming Languages
  • Projectiles
  • Simulations
  • World Geodetic System

Readers

  • Radio communications and signal processing.
  • ballistics.

Technology Areas

  • Space
  • Space - Spacecraft Maneuvers