Impact of the antenna stability on the Doppler Centroid frequency

Author

Recchia, Andrea ; Guarnieri, Andrea Monti ; Miranda, Nuno ; Collard, Fabrice ; D´Aria, Davide ; Giudici, Davide

fYear

2011

fDate

24-29 July 2011

Firstpage

1516

Lastpage

1519

Abstract

In this paper a method for calculating the antenna contribution to the Doppler Centroid is presented. The Antenna Doppler Contribution (ADC) is originated by the non idealities affecting the TR modules of the active antenna arrays. It is an undesired effect for SAR applications requiring stringent performances on the Doppler Centroid control capability. The first part of this paper introduces the problem and shows how it is possible to predict the ADC by exploiting a suitable Antenna Model. The second part of the paper presents a comparison between the ADC calculated with an Antenna Model and the ADC retrieved from real ASAR data.

Keywords

Doppler radar; active antenna arrays; radar antennas; ADC; Doppler centroid control capability; Doppler centroid frequency; SAR application; TR module; antenna Doppler contribution; antenna array; antenna contribution; antenna model; antenna stability; real ASAR data; Antenna arrays; Antenna radiation patterns; Azimuth; Data models; Doppler effect; Mathematical model; Antenna Doppler Contribution; Antenna Model; Doppler Anomaly; Doppler Centroid;

fLanguage

English

Publisher

ieee

Conference_Titel

Geoscience and Remote Sensing Symposium (IGARSS), 2011 IEEE International

Conference_Location

Vancouver, BC

ISSN

2153-6996

Print_ISBN

978-1-4577-1003-2

Type

conf

DOI

10.1109/IGARSS.2011.6049356

Filename

6049356