Matrix ill-condition analysis in spectrum recovery of DPCA HRWS SAR imaging

Matrix ill-condition analysis in spectrum recovery of DPCA HRWS SAR imaging

Conventional single-platform spaceborne synthetic aperture radar has a conflict between wide imaging swath width and fine-cross-range resolution. Displaced phase center antennas is one method to overcome this limitation. For spectrum recovery of nonuniform sampling, a detailed analysis on the relati...

Full description

Saved in:
Bibliographic Details
Main Authors: Ma, Changzheng, Hu, Xianyang, Yeo, Tat Soon, Ng, Boon Poh, Zhang, Qun
Other Authors: School of Electrical and Electronic Engineering
Format: Article
Language:English
Published: 2021
Subjects:
Engineering::Electrical and electronic engineering
Displaced Phase Center Antennas
High-resolution Wide-swath Imaging
Online Access:https://hdl.handle.net/10356/150805
Tags: Add Tag
No Tags, Be the first to tag this record!
Institution: Nanyang Technological University
Language: English
Description
Summary:Conventional single-platform spaceborne synthetic aperture radar has a conflict between wide imaging swath width and fine-cross-range resolution. Displaced phase center antennas is one method to overcome this limitation. For spectrum recovery of nonuniform sampling, a detailed analysis on the relationship between coefficient matrix singularity and the number of effective phase centers (EPCs) passed by the platform during one pulse repetition time (PRT) is given. When the distance passed by the platform during one PRT is multiple of the distance between two EPCs plus a small value, the coefficient matrix is singularity. An explicit expression of the coefficient matrix is also derived.

Similar Items