Nyquist Sampling Requirements for Polar Grids in Bistatic Time-Domain Algorithms

Author

Vu, Viet Thuy ; Pettersson, Mats I.

Author_Institution

Blekinge Inst. of Technol., Karlskrona, Sweden

Volume

63

Issue

2

fYear

2015

fDate

Jan.15, 2015

Firstpage

457

Lastpage

465

Abstract

The paper presents a derivation of Nyquist sampling requirements for the polar grids in some bistatic time-domain algorithms. The derivation is based on an airborne bistatic system with general bistatic geometry. The Nyquist sampling requirements are shown to be the functions of operating radar frequency, transmitter and receiver subaperture lengths, and bistatic geometry. How to decide the Nyquist sampling requirements for different bistatic geometries and the relationship between the Nyquist sampling requirements in the monostatic and bistatic cases are also addressed in the paper. The derived Nyquist sampling requirements is examined with the bistatic CARABAS-II like data.

Keywords

radar signal processing; signal sampling; Nyquist sampling; airborne bistatic system; bistatic CARABAS-II like data; bistatic cases; bistatic time-domain algorithms; general bistatic geometry; polar grids; Geometry; Radar polarimetry; Receivers; Signal processing algorithms; Synthetic aperture radar; Time-domain analysis; Transmitters; Bistatic; Nyquist sampling; SAR; fast backprojection;

fLanguage

English

Journal_Title

Signal Processing, IEEE Transactions on

Publisher

ieee

ISSN

1053-587X

Type

jour

DOI

10.1109/TSP.2014.2375157

Filename

6967861