Results 21 to 30 of about 5,404,433 (152)

Multisensor Management Method for Ground Moving Target Tracking Based on Doppler Blind Zone Information

Journal of Sensors, Volume 2022, Issue 1, 2022., 2022
Tracking ground moving target with sensors proves to be a challenge due to the uncertainty of target motion area, the existence of Doppler blind zone (DBZ), and the complex terrain. In this paper, a multisensor management method based on DBZ information is presented, in which the available sensors are selected to obtain the best operational revenues ...
Yunpu Zhang, Ganlin Shan, Rui Zhang, Xiusheng Duan, Chun-xi Yang   +4 more
wiley   +1 more source

Dealing with co‐channel interference in multi‐channel airborne passive radar

IET Radar, Sonar &Navigation, Volume 15, Issue 1, Page 85-100, January 2021., 2021
Abstract We address the problem of co‐channel interference (CCI) in multi‐channel airborne passive radars using digital broadcast signals of opportunity. A framework for suppressing the CCI is proposed, based on a two‐stage approach, which reflects the range–Doppler map being a function of both a reference and a surveillance signal. In the first stage,
Diego Cristallini, Ashley Summers, Philipp Wojaczek, Robert Young, Daniel O'Hagan   +4 more
wiley   +1 more source

Multi-Channel SAR System Design for HRWS and GMTI in Low PRF

IEEE Access, 2020
High-resolution and wide-swath (HRWS) is an important challenge in synthetic aperture radar (SAR). Combined SAR with array, the azimuth dual-channel SAR configuration achieves high azimuth resolution and HRWS in low Pulse repetition frequency (PRF) by ...
Xuepan Zhang, Chen Yang, Xuejing Zhang, Qingqing Lin   +3 more
doaj   +1 more source

Multiperson Interactive Activity Recognition Based on Interaction Relation Model

Journal of Mathematics, Volume 2021, Issue 1, 2021., 2021
Multiperson activity recognition is a pivotal branch as well as a challenging topic of human action recognition research. This paper adopts a hybrid learning model to the spatio‐temporal relationship and occlusion relationship among multiple people.
Hongbin Tu, Renyu Xu, Rui Chi, Yuanyuan Peng, Mehdi Ghatee   +4 more
wiley   +1 more source

The J2 Relative Perturbation Analysis of Satellite Formation under the Requirement of Relative Position Maintenance with Millimeter‐Level Accuracy

International Journal of Aerospace Engineering, Volume 2021, Issue 1, 2021., 2021
With high‐precision DEM (Digital Elevation Model) and GMTI (Ground Moving Target Indicator) as the demand background, the influence of J2 zonal harmonic term perturbation on the relative motion of the millimeter‐level short‐range leader‐follower satellites in near‐circular orbit is studied through the relative perturbation method. An equation of motion
Jingji Wang, Chunyang Liu, Yue Wang
wiley   +1 more source

SAR Ground Moving Target Imaging based on Sparse Representation [PDF]

فصلنامه علوم و فناوری فضایی, 2021
synthetic aperture radar (SAR) for ground moving target indication (GMTI) and imaging (GMTIm) have been gaining increasing interests for both civilian and military applications.
S. Andishe Moezzi, Mohamad Ali Masnadi-Shirazi   +1 more
doaj   +1 more source

Robust GMTI Scheme for Highly Squinted Hypersonic Vehicle-Borne Multichannel SAR in Dive Mode

Remote Sensing, 2021
While there are recent researches on hypersonic vehicle-borne multichannel synthetic aperture radar in ground moving target indication (HSV-MC-SAR/GMTI), this article, which specifically explores a robust GMTI scheme for the highly squinted HSV-MC-SAR in
Jiusheng Han, Yunhe Cao, Wenhua Wu, Yang Wang, Tat-Soon Yeo, Shuai Liu, Fengfei Wang   +6 more
doaj   +1 more source

Large Along-Track Baseline SAR-GMTI: First Results With The TerraSAR-X/TanDEM-X Satellite Constellation [PDF]

, 2011
In the paper first ground moving target indication (GMTI) and parameter estimation results obtained with the spaceborne TerraSAR-X/TanDEM-X satellite constellation are presented and discussed.
Baumgartner, Stefan V., Stefan V. Baumgartner, Krieger, Gerhard, Gerhard Krieger   +3 more
core   +1 more source

Fast GMTI Algorithm For Traffic Monitoring Based On A Priori Knowledge [PDF]

, 2012
In this paper a fast a priori knowledge-based ground moving target indication and parameter estimation algorithm applicable to single- as well as to multi-channel synthetic aperture airborne radar data is presented.
Baumgartner, Stefan Valentin, Krieger, Gerhard   +1 more
core   +1 more source

An Accurate Imaging and Doppler Chirp Rate Estimation Algorithm for Airborne CSSAR-GMTI Systems

IEEE Access, 2019
Airborne circular stripmap synthetic aperture radar (CSSAR)-ground moving target indication (GMTI) systems are attractive tools for air-to-ground surveillance and monitoring, because of their advantages of short revisit time and large coverage.
yongkang li, Baochang Liu, Lei Wang, Hongmeng Chen, Laisen Nie, Lina Zeng, Guoan Bi   +6 more
doaj   +1 more source