Linear Least-Squares Determination of Doppler Time Derivative for NAVSPASUR-Like Signals

Autor:	S. H. Knowles, W. B. Waltman
Rok vydání:	1985
Předmět:	Estimation theory Doppler radar Derivative law.invention symbols.namesake law Time derivative symbols Astrophysics::Solar and Stellar Astrophysics Electrical and Electronic Engineering Radar Orbit determination Instrumentation Algorithm Doppler effect Linear least squares Remote sensing Mathematics
Zdroj:	IEEE Transactions on Instrumentation and Measurement. :64-69
ISSN:	1557-9662 0018-9456
Popis:	A method is derived for optimum estimation of doppler, doppler time derivative, and other parameters for doppler-type radar returns, using linear least-squares estimation procedures. It is used on radar returns from the Naval Space Surveillance System to obtain improvement of at least one order of magnitude in doppler measurement from previous practice; doppler derivative has been measured for the first time. The accurate measurement of doppler derivative (typically ±0.2 Hz2) has enabled a resolution of the inherent geometric degeneracy in the coplanar NAVSPASUR system, to provide a significant improvement in single-pass orbit determination accuracy.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9cec1800d5d2a695a16cc433cdbbb88c https://doi.org/10.1109/tim.1985.4315258 Zobrazit plný text záznamu