Results 21 to 30 of about 136,601 (340)

Optical vector analysis with attometer resolution, 90-dB dynamic range and THz bandwidth

Nature Communications, 2019
Typical methods for optical vector analysis have tradeoffs among resolution, dynamic range, and bandwidth. The authors use an asymmetric optical probe signal generator and receiver to perform attometer resolution measurement over a THz of bandwidth while
Ting Qing, Shupeng Li, Zhenzhou Tang, Bindong Gao, Shilong Pan   +4 more
doaj   +1 more source

Low probability of intercept‐based cooperative node selection and transmit resource allocation for multi‐target tracking in multiple radars architecture

IET Signal Processing, 2022
A low probability of intercept (LPI)‐based cooperative node selection and transmit resource allocation (CNS‐TRA) strategy is proposed for multi‐target tracking in multiple radars architecture (MRA).
Lintao Ding, Chenguang Shi, Fei Wang, Jianjiang Zhou   +3 more
doaj   +1 more source

Photonics-Based High-Resolution 3D Inverse Synthetic Aperture Radar Imaging

IEEE Access, 2019
A photonics-based radar for high-resolution 3D microwave imaging is proposed and demonstrated, in which high range resolution is achieved by employing a wideband linearly frequency modulated signal, and high cross-range resolution in both azimuth and ...
Xingwei Ye, Fangzheng Zhang, Yue Yang, Daiyin Zhu, Shilong Pan   +4 more
doaj   +1 more source

Joint Optimization of Transmit Power and Dwell Time for Asynchronous Multi-target Tracking in Heterogeneous Multiple Radar Networks with Imperfect Detection

Leida xuebao, 2023
The joint optimization problem of transmit power and dwell time of radar for asynchronous multi-target tracking in heterogeneous multiple radar networks with imperfect detection is investigated.
Chenguang SHI, Zhicheng TANG, Lintao DING, Jianjiang ZHOU   +3 more
doaj   +1 more source

Optimal Power Allocation Algorithm for Radar Network Systems Based on Low Probability of Intercept Optimization(in English)

Leida xuebao, 2014
A novel optimal power allocation algorithm for radar network systems is proposed for Low Probability of Intercept (LPI) technology in modern electronic warfare. The algorithm is based on the LPI optimization.
Shi Chen-guang, Wang Fei, Zhou Jian-jiang, Chen Jun   +3 more
doaj   +1 more source

Ultralow Phase Noise Optoelectronic Oscillator and Its Application to a Frequency Synthesizer

Leida xuebao, 2019
We propose a novel injection-locked OptoElectronic Oscillator (OEO) with ultralow phase noise based on two cascaded phase modulators, which is further applied to construct a frequency synthesizer.
LIU Shifeng, XU Xiaorui, ZHANG Fangzheng, LIU Peng, KANG Xiaochen, YANG Huashan, PAN Shilong   +6 more
doaj   +1 more source

Multi-Mission Oriented Joint Optimization of Task Assignment and Flight Path Planning for Heterogeneous UAV Cluster

Remote Sensing, 2023
This paper puts forward a joint optimization algorithm of task assignment and flight path planning for a heterogeneous unmanned aerial vehicle (UAV) cluster in a multi-mission scenario (MMS). The basis of the proposed algorithm is to establish constraint
Xili Dong, Chenguang Shi, Wen Wen, Jianjiang Zhou   +3 more
doaj   +1 more source

S-Method In Radar Imaging

, 2006
Publication in the conference proceedings of EUSIPCO, Florence, Italy ...
Milos Dakovic, V. Popovic, Thayananthan Thayaparan, Ljubisa Stankovic   +3 more
openaire   +2 more sources

Distributed Multi-target Localization System Based on Optical Wavelength Division Multiplexing Network

Leida xuebao, 2019
A distributed multi-target localization system based on optical Wavelength Division Multiplexing (WDM) network is demonstrated. The wideband orthogonal waveforms are generated by introducing the chaotic OptoElectronic Oscillator (OEO).
ZHU Dan, XU Weiyuan, CHEN Wenjuan, LIU Jiang, PAN Shilong   +4 more
doaj   +1 more source

Region-enhanced passive radar imaging [PDF]

, 2005
The authors adapt and apply a recently-developed region-enhanced synthetic aperture radar (SAR) image reconstruction technique to the problem of passive radar imaging.
Cetin, Mujdat, Lanterman, A.D., Çetin, Müjdat   +2 more
core   +1 more source