Accession Number : AD0686650

Title :   IONOSPHERE PROPAGATION DELAY MEASUREMENT TECHNIQUES USING DUAL PHASE COHERENT DOPPLER FREQUENCIES AND A THIN SHELL MODEL.

Descriptive Note : Interim rept.,

Corporate Author : NAVAL RESEARCH LAB WASHINGTON D C

Personal Author(s) : Landia,G. Paul ; Breetz,Louis D.

Report Date : 08 APR 1969

Pagination or Media Count : 26

Abstract : A theoretical approach was made to developing a technique for approximating the time error of a signal from a satellite caused by free electrons reducing the electromagnetic propagation speed. The development involved the use of the Transit satellites' dual frequency transmissions at 400 and 150 MHz, the AN/SRN-9 receiver, and a knowledge of the orbital location of the satellite. The technique gives a reasonably close delay measurement for a given satellite at a given time under a given ionospheric condition. (Author)

Descriptors :   (*NAVIGATION SATELLITES, RADIO SIGNALS), (*ELECTROMAGNETIC RADIATION, IONOSPHERIC PROPAGATION), ERRORS, TIME, THEORY, DOPPLER NAVIGATION, DOPPLER SYSTEMS, MEASUREMENT, NUMERICAL ANALYSIS

Subject Categories : Radiofrequency Wave Propagation

Distribution Statement : APPROVED FOR PUBLIC RELEASE