Results 21 to 30 of about 19,644 (268)

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

Joint Transmit Resources and Trajectory Planning for Target Tracking in Airborne Radar Networks

Leida xuebao, 2022
This paper investigates the joint optimization problem of transmit resources and trajectory planning for target tracking in airborne radar networks. First, the analytical expression for the Bayesian Cramér-Rao Lower Bound (BCRLB) with the variables of ...
Chenguang SHI, Yijie WANG, Xiangrong DAI, Jianjiang ZHOU   +3 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

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

Sector imaging radar for enhanced vision [PDF]

Aerospace Science and Technology, 2003
Summary: SIREV (sector imaging radar for enhanced vision) is an innovative airborne radar system which can supply high-quality images in any desired direction under almost every weather condition. In contrast to synthetic aperture radar systems, no relative motion between sensor and targets is required in SIREV.
Krieger, Gerhard, Mittermayer, Josef, Buckreuss, Stefan, Wendler, Michael, Sutor, Thomas, Witte, Franz, Moreira, Alberto   +6 more
openaire   +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

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

CNN-Based Target Detection and Classification When Sparse SAR Image Dataset is Available

IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 2021
Synthetic aperture radar (SAR) is an earth observation technology that can obtain high-resolution image in all-weather and all-time conditions, and hence, has been widely used in civil and military applications.
Hui Bi, Jiarui Deng, Tianwen Yang, Jian Wang, Ling Wang   +4 more
doaj   +1 more source

Design and Performance Analysis of Sparse TOPS SAR Mode

IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 2022
Terrain observation by progressive scans (TOPS) is a novel and promising wide-swath synthetic aperture radar (SAR) imaging mode, which overcomes the scalloping effect existing in ScanSAR.
Hui Bi, Guoxu Li, Yufan Song, Jingjing Zhang, Daiyin Zhu, Wen Hong, Yirong Wu   +6 more
doaj   +1 more source