Indicating ambiguous false positives to improve wide-area SAR vessel detection

CH Gierull, M Rashid - IEEE Transactions on Geoscience and …, 2024 - ieeexplore.ieee.org
Automatic vessel detection based on wide-area synthetic aperture radar (SAR) imagery is
achieved via a statistical hypothesis test in which a ship is declared detected when the pixel …

Maritime surveillance with undersampled SAR

Y Wang, Z Zhang, N Li, F Hong, H Fan… - IEEE Geoscience and …, 2017 - ieeexplore.ieee.org
According to the minimum antenna area constraint, synthetic aperture radar (SAR) systems
require a low-pulse repetition frequency (PRF) to image the wide swaths in ocean surface …

Efficient SAR azimuth ambiguity reduction in coastal waters using a simple rotation matrix: the case study of the northern coast of Jeju Island

JH Choi, JS Won - Remote Sensing, 2021 - mdpi.com
Azimuth ambiguities, or ghosts on SAR images, represent one of the main obstacles for SAR
applications involving coastal monitoring activities such as ship detection. While most …

Retrieval of Ship Radial Velocity From Single-Channel Complex-Valued Spaceborne SAR Imagery

CH Gierull, K El-Darymli - IEEE Transactions on Aerospace and …, 2024 - ieeexplore.ieee.org
This paper proposes two different techniques to estimate the radial velocity component in
complex-valued singlechannel space-based Synthetic Aperture Radar (SAR) systems for …

Calibration of SIMO Formations with Azimuth Ambiguities

N Petrushevsky, AM Guarnieri - IEEE Transactions on …, 2024 - ieeexplore.ieee.org
Formations of small satellites are gaining momentum as an alternative to single synthetic
aperture radar (SAR) systems, allowing them to improve performance and reduce costs …

Phase Variant Analysis Algorithm for Azimuth Ambiguity Detection

A Radius, P Leprovost, V Ignatenko… - 2022 IEEE Radar …, 2022 - ieeexplore.ieee.org
An innovative algorithm to detect the azimuth ambiguities is presented. The proposed
algorithm is completely model independent and can work in every conditions, being very …

A multifeature TDAO-AIR clutter classification approach for inshore ambiguity identification and suppression with azimuth multichannel SAR system

C Han, Z Yang, Q Zhang, P Huang… - IEEE Transactions on …, 2021 - ieeexplore.ieee.org
In the inshore region, the azimuth ambiguity of land clutter is the main factor, which reduces
the clutter suppression performance for the multichannel synthetic aperture radar (SAR) …

A multifeature autosegmentation-based approach for inshore ambiguity identification and suppression with azimuth multichannel SAR systems

H Xu, Z Yang, P He, G Liao, M Tian… - IEEE Journal of …, 2018 - ieeexplore.ieee.org
To address the problems of location and suppression of inshore azimuth ambiguous clutter
for the azimuth multichannel synthetic aperture radar (SAR) systems, a multifeature …

Choosing Sets of BPSK-Signals Based on Cycle Sequences for Low Orbit SAR with Multibeam Antenna Array

K Khramov, S Zhiganov… - 2024 26th International …, 2024 - ieeexplore.ieee.org
The work is devoted to the study of the correlation properties of cyclic sequences and
methods for their construction. Such sequences make it possible to generate a large number …

An approach based on multi-feature classification for azimuth ambiguity identification with ATI-SAR systems

H Xu, Z Yang, J Yang - EUSAR 2018; 12th European …, 2018 - ieeexplore.ieee.org
It is a core issue for moving target (or ship) detection to identify azimuth ambiguities in the
inshore region with along-track interferometric (ATI)-synthetic aperture radar (SAR) systems …