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A Robust Hough Transform-Based Track Initiation Method for Multiple target Tracking in Dense Clutter 8th

A Robust Hough Transform-Based Track Initiation Method for M...

引用

8th International Conference on Communications, Signal Processing, and Systems, CSPS 2019

作者： Zhu, Qian Hu, Panhe Pan, Jiameng Bao, Qinglong Science and Technology on Automatic Target Recognition Laboratory National University of Defense Technology Changsha410072 China

ISBN: (纸本)9789811394089

Existing multiple track initiation methods based on Hough Transform have flaws, such as huge computation load in dense clutter environment and performance degradation in measurement error. To improve those defects, we propose a robust Hough Transform-based track initiation method for multiple target tracking in dense clutter. The whole proposed method is divided into three steps. The first step is to screen data through the grid-based velocity test. The second step is to cluster the screened data into groups based on eight connectivity principle of grids. The last step is to respectively make Hough Transform on each group data to achieve track initiation. The experiment results illustrate the proposed algorithm outperforms traditional algorithms on Hough transform based track initiation. © 2020, Springer Nature Singapore Pte Ltd.

关键词： Hough transforms

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An experimentalstudy of digitalarraypassive bistatic radar system

An experimentalstudy of digitalarraypassive bistatic radar s...

引用

IET International Radar Conference 2015

作者： Hu, Panhe Bao, Qinglong Lin, Caiyong Chen, Zengping Science and Technology on Automatic Target Recognition Laboratory National University of Defense Technology Changsha410073 China

ISBN: (纸本)9781849199940

Passive bistatic radars (PBR) using illuminators of opportunity have attracted much attention over the last years. However, most PBR systems have been rather experimental set-ups tailored to a single frequency band or implemented as laboratory test devices. In case of PBR exploiting transmitters for sources of illumination, there is a problem that radar transmitting signal parameters are unknown, and radar signal processing cannot be conducted accurately. This paper presents a study to demonstrate the feasibility of using a Digital Array Passive Bistatic Radar (DA-PBR) system in weak target detection. The design considerations and the resulting DA-PBR structure are described and the evaluations of various measurement campaigns with this system are summarized.

关键词： Tracking radar

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Amplitude aiding dual-threshold clustering algorithm and its application to coherent radar

Amplitude aiding dual-threshold clustering algorithm and its...

引用

2013 2nd International Conference on Measurement, Information and Control, ICMIC 2013

作者： Xiao, Qin Zhao, Hong-Zhong Science and Technology on Automatic Target Recognition Laboratory National University of Defense Technology Changsha Hunan China

ISBN: (纸本)9781479913923

General clustering algorithm in coherent radar distance Doppler domain has several questions such as large amount of computation, inconsistent dimension, incorrect clustering and so on, thus this paper puts forward a dual-threshold clustering algorithm which is aided by amplitude. Firstly, detect the edge of the two-dimensional image of R-D and make data limit within local boundary. Then normalize R-D data. Finally, employing the amplitude information to aid Distance-Doppler information respectively proceed the first process of rough clustering and the second process of clustering. The algorithm can solve the problem of target amplitude rapid ups and downs and be applicable to all kinds of complex situations which targets coexist with interference. In addition, the algorithm does not require any priori information about the parameters, which is fit for applying to coherent radar. © 2013 IEEE.

关键词： Clustering algorithms

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A hardware-efficient DOA estimation method based on digital channelization receiver 9

A hardware-efficient DOA estimation method based on digital ...

引用

Millimetre Wave and Terahertz Sensors and technology IX

作者： Guo, Rui Fan, Xiaolei Zhang, Yue Lin, Qianqiang Chen, Zengping Science and Technology on Automatic Target Recognition Laboratory National University of Defense Technology Changsha410073 China

ISBN: (数字)9781510603912

ISBN: (纸本)9781510603905

In this paper, we present a novel hardware-efficient direction of arrival (DOA) estimation method based on digital channelized receiver. The proposed method splits the wideband array output into multiple frequency sub-channels and estimates the signal parameters using digital channelization receiver. Based on the accurate signal parameters estimation, signals with different bandwidths are isolated reasonably. Different DOA estimation methods are used to signals with different bandwidths. The proposed channelization based method can improve the output signal noise ratio (SNR). It outperforms those conventional DOA estimation methods on estimation accuracy, especially in real environment. Simulations are presented to demonstrate the performance. The results verify the effectiveness of the proposed method. © 2016 SPIE.

关键词： Bandwidth

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Modeling and simulation of a full coherent LFM pulse radar system based on Simulink

Modeling and simulation of a full coherent LFM pulse radar s...

引用

2013 2nd International Conference on Measurement, Information and Control, ICMIC 2013

作者： Hao, Wu Zhao, Hong-Zhong Science and Technology on Automatic Target Recognition Laboratory National University of Defense Technology Changsha Hunan China

ISBN: (纸本)9781479913923

On the platform of Simulink, the library of radar standard blocks is built with the lower-level functions and system blocks. These blocks can be expanded to the library of Simulink after packaged. Connecting these blocks easily, users can quickly get the radar system they need. Taking the full coherent LFM pulse radar as an example, this paper gives a specific introduction for the establishment and packaging of the library of common radar standard blocks. It can be seen that, the blocks which has been built and packaged greatly reduced the complexity of the simulation of a radar system. © 2013 IEEE.

关键词： Radar

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Knowledge distillation based on channel attention 3

Knowledge distillation based on channel attention

引用

2022 3rd International Conference on Computer Information and Big Data Applications, CIBDA 2022

作者： Meng, Xianfa Liu, Fang National Key Laboratory of Science and Technology on Automatic Target Recognition National Defense University of Science and Technology Hunan Changsha410000 China National Key Laboratory of Science and Technology on Automatic Target Recognition National Defense University of Science and Technology Hunan Changsha410000 China

ISBN: (纸本)9783800758760

With the development of convolutional neural network (CNN), the depth and width of CNN are increasing, which raises the demand for computing resources and storage space more and more. Knowledge distillation aims at transferring knowledge extracted from a teacher network as an additional label to guide the training of a lightweight student network. As an effective method of network compression, it has made a lot of research progress in multiple types of tasks. Aiming at the information redundancy problem of feature maps, we introduce a novel approach, dubbed Channel Attention Knowledge Distillation (CAKD). By extracting the channel weight knowledge, the student can learn the channel assigning ratio of the teacher network and then correct its channel information of feature maps. Extensive experiments on multiple datasets show that the proposed method can significantly improve the performance of student networks compared to the other knowledge distillation methods of the same type. © VDE VERLAG GMBH - Berlin - Offenbach.

关键词： Distillation

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Open-set HRRP recognition method based on joint sparse representation 4

Open-set HRRP recognition method based on joint sparse repre...

引用

2022 4th International Conference on Wireless Communications and Smart Grid, ICWCSG 2022

作者： Qu, Shuang Liu, Shengqi Fu, Qiang National Key Laboratory of Science and Technology on Automatic Target Recognition National University of Defense Technology China

Aiming at the problem of multi-view high-resolution range profile (HRRP) target recognition under open set conditions, we proposed an open set recognition method based on joint sparse representation (JSR), which solves the problem of low recognition rate of traditional methods under open set conditions. This method is applied to the background of radar single-station observation. JSR is used to solve the reconstruction error of multi-view HRRP by the over-complete dictionary, while extreme value theory (EVT) is used to model the reconstruction error tailing of matching and non-matching categories and transform the open set identification problem into a hypothesis testing problem. During recognition, we use the reconstruction error to determine the candidate class, the scores of the matching class and non-matching class are obtained according to the confidence of tail distribution, and the weighted sum of the two is used as the category criterion to finally determine the target or candidate class outside the library. This method can effectively use the relevant information between multi-view HRRPs to improve the performance of HRRP recognition under open set conditions. The algorithm is tested with HRRP data generated from MSTAR inversion, and the results show that the performance of the proposed method is better than the mainstream open set recognition method. © Published under licence by IOP Publishing Ltd.

关键词： Errors

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Radar active jamming recognition based on time-frequency image classification 21

Radar active jamming recognition based on time-frequency ima...

引用

5th International Conference on Electronic Information technology and Computer Engineering, EITCE 2021

作者： Wang, Jingyi Dong, Wenhao Song, Zhiyong National Key Laboratory of Science and Technology on Automatic Target Recognition National University of Defense Technology Changsha China

ISBN: (纸本)9781450384322

Flexible active radar jamming has become one of the main threats in modern electronic warfare. Aiming at the problem of classifying and identifying active jamming patterns of towed decoy radar, this paper proposes a set of methods for classifying and identifying jamming time-frequency images based on deep learning. The content mainly includes: using short-time Fourier transform to obtain time-frequency images of six kinds of active interference under different interference signal ratios. Using ResNet network to realize the classification and recognition of different interferences. Through simulation analysis, the algorithm can still obtain better results under low interference-to-noise ratio. © 2021 ACM.

关键词： Jamming

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Improved Sparse Representation of Open Set HRRP recognition Method 5

Improved Sparse Representation of Open Set HRRP Recognition ...

引用

5th International Conference on Electronics and Communication, Network and Computer technology, ECNCT 2023

作者： Zhang, Huiqiang Liu, Shengqi Qu, Shuang Ou, Jianping Zhang, Jun Deng, Jie National University of Defense Technology National Key Laboratory of Science and Technology on Automatic Target Recognition Changsha China

ISBN: (纸本)9798350328660

Traditional target recognition methods classify targets within a closed set, and the methods cannot effectively identify unknown categories outside the library. Research on open set recognition (OSR) has been developed in computer vision, yet rare research is conducted in radar target recognition. First the HRRP recognition performance of several state-of-The-Art OSR algorithms are compared in open set, including SROSR, WSVM, and 1-vs Set. Among them the SROSR algorithm performances better than the others. However, manual setting of tail and weight parameters is required in the algorithm, which may difficult to be obtained in practical applications. Focused on this issue, an modified SROSR method based on the mean ratio of reconstruction errors is presented. The mean ratio of reconstruction errors is used as a new metrics and its statistical distribution is modeled with extreme value theory (EVT). Compared with the classical SR-OSR, manual setting of the tail of reconstruction errors and weight parameters are avoided. Experiments were conducted on HRRP data generated from MSTAR SAR chips, and the results show that the recognition performance of the proposed method is better than the classical SROSR algorithm. © 2023 IEEE.

关键词： Radar target recognition

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Design of radar waveform game platform based on PXI system 10

Design of radar waveform game platform based on PXI system

引用

10th International Conference on Control, Automation and Information sciences, ICCAIS 2021

作者： Wang, Min Jiang, Yanwen Fan, Hongqi National University of Defense Technology National Key Laboratory of Science and Technology on Automatic Target Recognition ChangSha China

ISBN: (纸本)9781665440295

In view of the lack of a test verification platform in the research of the game between radar and target, a test platform for radar waveform game is designed based on the PXI system. The platform includes a multi-channel radar and a simulator that can simulate targets and repeater jamming. The radar transmission waveform, signal processing, target and jamming parameters can be configured by the user, and it has good versatility. It provides a practical test and verification platform for radar waveform design and algorithm research under gaming conditions. © 2021 IEEE.

关键词： Radar

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