Paper Info
Title
The Impact of Inter-Modulation Components on Interferometric GNSS-Reflectometry.
Abstract
The interferometric Global Navigation Satellite System Reflectometry (iGNSS-R) exploits the full spectrum of the transmitted GNSS signal to improve the ranging performance for sea surface height applications. The Inter-Modulation (IM) component of the GNSS signals is an additional component that keeps the power envelope of the composite signals constant. This extra component has been neglected in previous studies on iGNSS-R, in both modelling and instrumentation. This letter takes the GPS L1 signal as an example to analyse the impact of the IM component on iGNSS-R ocean altimetry, including signal-to-noise ratio, the altimetric sensitivity and the final altimetric precision. Analytical results show that previous estimates of the final altimetric precision were underestimated by a factor of due to the negligence of the IM component, which should be taken into account in proper design of the future spaceborne iGNSS-R altimetry missions.
Year
DOI
Venue
2016
10.3390/rs8121013
REMOTE SENSING
Keywords
Field
DocType
Global Navigation Satellite System Reflectometry (GNSS-R),ocean altimetry,auto-correlation function (ACF),passive reflectometry and interferometry system (PARIS)
GNSS reflectometry,Altimeter,Satellite system,Remote sensing,Sea-surface height,Ranging,GNSS applications,Reflectometry,GPS signals,Geology,Geodesy
Journal
Volume
Issue
ISSN
8
12
2072-4292
Citations 
PageRank 
References 
0
0.34
0
Authors
7
Name
Order
Citations
PageRank
Weiqiang Li1238.00
Antonio Rius213222.33
Fran Fabra36111.42
Manuel Martín-Neira416533.38
Estel Cardellach55314.11
S. Ribo612020.67
Dongkai Yang74022.91