DocumentCode
59404
Title
Equivalent slant range model for geosynchronous SAR
Author
Xin Zhang ; Puming Huang ; Weiwei Wang
Author_Institution
CAST, Xi´an Inst. of Space Radio Technol., Xi´an, China
Volume
51
Issue
10
fYear
2015
fDate
5 14 2015
Firstpage
783
Lastpage
785
Abstract
Geosynchronous (GEO) synthetic aperture radar (SAR) has an orbit height of 36 000 km which results in long round-trip time. Thus, the `Stop-Go´ assumption and the conventional slant range model for low-Earth-orbit (LEO) SAR lose effectiveness in GEO SAR. A concise signal propagation delay equation of GEO SAR is presented and furthermore an equivalent slant range model is proposed. To verify the accuracy of the proposed model, the dichotomy method is applied to obtain the real slant range. In addition, the effects of the `Stop-Go´ assumption on GEO SAR are analysed by theoretical analysis. Promising results were obtained by several experiments.
Keywords
artificial satellites; synthetic aperture radar; GEO SAR; LEO SAR; Stop-Go assumption; concise signal propagation delay equation; conventional slant range model; dichotomy method; equivalent slant range model; geosynchronous SAR; low earth orbit;
fLanguage
English
Journal_Title
Electronics Letters
Publisher
iet
ISSN
0013-5194
Type
jour
DOI
10.1049/el.2014.3593
Filename
7105438
Link To Document