Results 21 to 30 of about 329,290 (236)

Flexible Frequency-Hopping Microwave Generation by Dynamic Control of Optically Injected Semiconductor Laser

IEEE Photonics Journal, 2016
Under proper optical injection, period-one (P1) dynamics of an optically injected semiconductor laser can be excited by undamping the relaxation resonance of the semiconductor through Hopf bifurcation.
Pei Zhou, Fangzheng Zhang, Xingwei Ye, Qingshui Guo, Shilong Pan   +4 more
doaj   +1 more source

Collaborative transmit resource scheduling and waveform selection for target tracking in multistatic radar system

IET Radar, Sonar & Navigation, 2021
This paper proposes a collaborative transmit resource scheduling and waveform selection (CTRSWS) strategy for target tracking in multistatic radar system which consists of one transmitter and an arbitrary number of receivers.
Yijie Wang, Chenguang Shi, Fei Wang, Jianjiang Zhou   +3 more
doaj   +1 more source

Sequence Set Design for a New LFM-PC Hybrid Modulated Radar Signal

Sensors, 2021
In this paper we study the code design problem of a new form of linear frequency modulation phase-coded (LFM-PC) hybrid signal with wide Doppler tolerance based on a range-Doppler discrete ambiguity function (DAF) to get better detection performance and ...
Shiyi Li, Yuying Wang, Jindong Zhang, Daiyin Zhu   +3 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

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

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

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

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

Self-supervised Enhanced Radar Imaging Based on Deep-Learning-Assisted Compressed Sensing [PDF]

arXiv, 2022
Traditional radar imaging methods suffer from the problems of low resolution and poor noise suppression. We propose a new radar imaging method based on Self-supervised deep-learning-assisted compressed sensing (SS-DL-CS-Net). The original radar image as the input of net.
arxiv