Accession Number : ADA114057
Title : Multipath Analysis of Telemetry Support Positions for APATS.
Descriptive Note : Technical rept.,
Corporate Author : MITRE CORP BEDFORD MA
Personal Author(s) : Robertshaw,G A
PDF Url : ADA114057
Report Date : Apr 1982
Pagination or Media Count : 112
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.
Descriptors : *Telemeter systems, *Multipath transmission, Reentry vehicles, Interference, Electromagnetic wave reflections, Electromagnetic wave propagation, P band, S band, Intersymbol interference, Scenarios
Subject Categories : Radiofrequency Wave Propagation
Distribution Statement : APPROVED FOR PUBLIC RELEASE