Multipath Analysis of Telemetry Support Positions for APATS.

Abstract

It is anticipated that multipath propagation interference due to reflection from the sea will degrade APATS (ARIA Phased Array Telemetry System) reentry vehicle (RV) telemetry links. However, it is often feasible to reduce such interference by proper tailoring of the receiver position to the RV reentry parameters and telemetry characteristics. Theoretical analyses are presented which advocate specific ARIA flight constraints for several examples of P-band and S-band links in the context of nominal RV-aircraft (APATS) configurations. Issues such as APATs antenna gain, intersymbol interference, coherent and incoherent reflection from the sea, RV antenna gain, differential Doppler, RV-APATS geometry and RV trajectory are addressed in sufficient generally to permit application of basic multipath mitigation principles to a wide range of mission scenarios.

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Document Details

Document Type
Technical Report
Publication Date
Apr 01, 1982
Accession Number
ADA114057

Entities

People

  • G. A. Robertshaw

Organizations

  • MITRE Corporation

Tags

Communities of Interest

  • Advanced Electronics
  • Energy and Power Technologies
  • Weapons Technologies

DTIC Thesaurus Topics

  • Air Force
  • Altitude
  • Amplitude Modulation
  • Coordinate Systems
  • Difference Frequency
  • Doppler Effect
  • Elevation
  • Frequency
  • Geometry
  • Grazing Angles
  • Intersymbol Interference
  • Modulation
  • Multipath Interference
  • Plastic Explosives
  • Radar
  • Scattering
  • Surface Roughness

Fields of Study

  • Physics

Readers

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  • Radar Systems Engineering.