Results 21 to 30 of about 153 (75)

Повышение эффективности обнаружения загоризонтными РЛС с поверхностной волны надводных объектов на основе синтеза апертуры антенной системы [PDF]

, 2021
Nowadays, over-the-horizon surface wave radars are used to solve the problems of monitoring the situation on the water surface adjacent to the border areas of the land. The main advantage of these means is the ability to detect surface objects beyond the
Алёшкин, Андрей Петрович, Балакирев, Станислав Николаевич, Невзоров, Валерий Иванович, Савочкин, Павел Владимирович   +3 more
core   +4 more sources

Blind time‐domain motion compensation for synthetic Doppler spectra obtained from an HF‐radar on a floating platform

IET Radar, Sonar &Navigation, Volume 17, Issue 4, Page 571-578, April 2023., 2023
The article considers the case of a monostatic HF radar configuration where the transmitting antenna is on a floating platform while the receiving antenna is fixed. The proposed non‐linear optimisation‐based method in this article is able to successfully estimate the parameters of motion of the floating platform without prior knowledge of them and is ...
Sepideh Hashemi, Reza Shahidi, Eric W. Gill   +2 more
wiley   +1 more source

Multi‐target pair‐matching method based on angle information in transmit/receive‐receive synergetic High Frequency Surface Wave Radar

IET Radar, Sonar &Navigation, Volume 16, Issue 7, Page 1188-1197, July 2022., 2022
Abstract In the past few decades, the target location methods in transmit/receive‐receive (T/R‐R) synergetic High Frequency Surface Wave Radar (HFSWR) have received extensive attention from the signal processing community. However, there are few studies on the method of parameter pair‐matching for multi‐target scene.
Yang Bai, Xiaochuan Wu, Weibo Deng, Xin Zhang   +3 more
wiley   +1 more source

Comparing spatial patterns of marine vessels between vessel-tracking data and satellite imagery [PDF]

, 2023
Monitoring marine use is essential to effective management but is extremely challenging, particularly where capacity and resources are limited. To overcome these limitations, satellite imagery has emerged as a promising tool for monitoring marine vessel ...
Colette C.C. Wabnitz, Colette C.C. Wabnitz, Elizabeth R. Selig, Fiorenza Micheli, Fiorenza Micheli, Fiorenza Micheli, Jim Leape, Richard G. Correro, Serena Yeung, Shinnosuke Nakayama, Trevor J. Hastie, Trevor J. Hastie, WenXin Dong   +12 more
core   +1 more source

Remote Sensing with Shipborne High-Frequency Surface-Wave Radar [PDF]

, 2018
High-frequency surface-wave radar (HFSWR) has been successfully applied for moving target detection and remote sensing of ocean surface dynamic parameters for decades.
Ji, Zhenyuan, Sun, Minglei, Xie, Junhao, Yao, Guowei   +3 more
core   +2 more sources

Blind-time domain motion compensation of and significant-wave height extraction from high-frequency (HF) radar data acquired on a floating platform [PDF]

, 2023
High-frequency surface wave radar (HFSWR) is recognized as one of the essential tools for remote sensing of the ocean surface. It provides wide-area, all-weather, and near-real time surveillance.
Hashemi, Seyedehsepideh
core  

Discrete Frequency and Phase Coding Waveform for MIMO Radar [PDF]

, 2017
In multi-input multi-output (MIMO) radar system, good orthogonality between transmitting waveforms will fairly simplify the signal processing, along with improve the targets detection as well as the parameters estimation performance of the system.
Chang, G., Yu, C., Yu, X.
core   +2 more sources

Application of joint domain localised matrix CFAR detector for HFSWR

The Journal of Engineering, Volume 2019, Issue 21, Page 8134-8137, November 2019., 2019
Target detection is one of the most important parts of high‐frequency surface wave radar (HFSWR) signal processing, to find targets in noise or clutter and obtain targets’ information. However, some factors, such as the influence of clutter and the increase of detection range, will degrade the signal‐to‐clutter ratio (SCR). In the low SCR scenario, the
Lei Ye, Qiang Yang, Qiushi Chen, Weibo Deng   +3 more
wiley   +1 more source

A Novel Main‐Lobe Cancellation Method Based on a Single Notch Space Filter and Optimized Correlation Analysis Strategy

International Journal of Antennas and Propagation, Volume 2019, Issue 1, 2019., 2019
The high‐frequency hybrid sky‐surface wave radar (HFSSWR) is a new kind of over‐the‐horizon radar system. Combining the advantages of both the sky wave radar and the surface wave radar, HFSSWR has drawn much attention in recent years. But the new system also brings new challenges.
Jiazhi Zhang, Xin Zhang, Weibo Deng, Liang Guo, Qiang Yang, Atsushi Mase   +5 more
wiley   +1 more source

Weak Target Detection within the Nonhomogeneous Ionospheric Clutter Background of HFSWR Based on STAP

International Journal of Antennas and Propagation, Volume 2013, Issue 1, 2013., 2013
High Frequency Surface Wave Radar (HFSWR) can perform the functions of ocean environment monitoring, target detection, and target tracking over the horizon. However, its system′s performance is always limited by the severe ionospheric clutter environment, especially by the nonhomogeneous component.
Xin Zhang, Qiang Yang, Weibo Deng, Ulrich Nickel   +3 more
wiley   +1 more source