Detection method for the dynamic signal of sky screen-based velocity measurement system using Bayesian Generalized Likelihood Ratio Tests

Ding, Chen; Ni, Jingping; Liu, Bai; Chen, Dachuan

doi:10.1016/j.ijleo.2020.164511

Cited by 11 publications

(4 citation statements)

References 12 publications

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“…To sum up, the advantages and disadvantages of the commonly used detection methods for measuring the motion parameters of typical flying metal bodies such as artillery shells and rockets are shown in Table 1 [ 20 ]. The photoelectric and eddy current detection structure designed in this study is cheaper than the common conventional target detection systems while meeting the requirements of detection distance and time.…”

Section: Methodsmentioning

confidence: 99%

Detection of Flying Metal Bodies Based on Photoelectric Composite Sensing

Gao

Chen

et al. 2023

Sensors

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In order to reduce the impact of the environment on the accuracy and sensitivity of detection, and to meet the requirements of concealment from detection and being lightweight, a technology for detecting flying metal objects based on photoelectric composite sensors is proposed. The method first analyzes the target’s characteristics and detection environment, and then compares and analyzes the methods for detecting typical flying metal objects. On the basis of the traditional eddy current model, the photoelectric composite detection model that meets the requirements of detecting flying metal objects was studied and designed. For the problems of the short detection distance and the long response time of the traditional eddy current model, the performance of the eddy current sensor was improved to meet the requirements of detection through optimizing the detection circuit and coil parameter model. Meanwhile, to meet the goal of being lightweight, an infrared detection array model applicable to flying metal bodies was designed, and simulation experiments of composite detection based on the model were conducted. The results show that the flying metal body detection model based on photoelectric composite sensors met the requirements of distance and response time for detecting flying metal bodies and may provide an avenue for exploring the composite detection of flying metal bodies.

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Section: Methodsmentioning

confidence: 99%

Detection of Flying Metal Bodies Based on Photoelectric Composite Sensing

Gao

Chen

et al. 2023

Sensors

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“…For the two sets of characteristic values, the discriminant function is obtained by Fisher discriminant analysis. y = 0.0008H 0 + 0.0011H 1 + 0.0013H 2 + 0.0015H 3 + 0.001H 4 + 0.0006H 5 (17) Mathematics 2023, 11, 3936 13 of 20…”

Section: Signal Detection Analysismentioning

confidence: 99%

“…In [16], Lou et al proposed a signal recognition method based on the Hopfield auto-associative neural network for sky screen sensor, which identifies and eliminates typical factor interference. In [17], Chen et al proposed a method using Bayesian generalized likelihood ratio tests (BGLRT) to detect the dynamic signal of sky screen sensor based velocity measurement system under poor signal-to-noise ratio (SNR). The characteristics of the dynamic signal were systematically analyzed, and, then, a Bayesian classification model was formulated based on BGLRT.…”

Section: Introductionmentioning

confidence: 99%

An Information Recognition and Time Extraction Method of Tracking a Flying Target with a Sky Screen Sensor Based on Wavelet Modulus Maxima Theory

Gao,

Zhang

2023

Mathematics

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Aiming at the problems of big noise, lots of false targets, and accurate time extraction while tracking a flying target in the signal from a sky screen sensor, a flying target recognition and time extraction method is proposed, based on wavelet transformation. The noisy signal output by the sky screen sensor is filtered with wavelet transformation to filter out some high-frequency components; the filter is designed to handle the signal time frequency characteristics of the flying target and noise. To improve the recognition efficiency of whether the signal includes tracking of the flight target, based on a two-class discriminant model, the wavelet Fisher discriminant method is used to construct the feature vector of the false target and the flying target signal, and the recognition method of the flying target signal is studied. According to the wavelet modulus maxima theory, the single target signal is isolated, and the time moment of the flying target passing through the detection screen is calculated. The velocities calculated based on the flying target signal recognition method proposed in this paper and based on the least-mean-squares algorithm of the traditional sky screen sensor velocity measurement system are compared with the net target velocity measurement system. The results show that the velocity data obtained by the method in this paper are closer to the true value of the target flight velocity, and the average error between the velocity value obtained by the method in this paper and the standard net target velocity measurement system is less than 0.954 m/s, which verifies the superiority of the method proposed in this paper.

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“…It is an indispensable test equipment that has a simple test structure and low cost. [1][2][3][4][5] In the natural background environment, multiple screen intersection test system forms a detection screen array with space geometric relations. When the flight target passes through the unit detection screen, the target signal is obtained by amplifying, filtering, and extracting.…”

Section: Introductionmentioning

confidence: 99%

Data transmission bit error rate modeling and analysis of multi‐screen measurement system based on optical communication link

Zhang

Gao

Zhang

2021

Micro & Optical Tech Letters

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To reduce the bit error rate of data transmission in the field of the long-distance ballistic trajectory of weapon range, this article utilizes a MIMO-OFDM atmospheric laser link communication model to transfer the obtained data using the four-screen measurement system in the terminal ballistic. First, the atmospheric attenuation channel model caused by haze and fog in the atmospheric link communication is analyzed. Then the atmospheric attenuation factors of haze day are introduced and the received optical power of the system is calculated. Lastly, the atmospheric laser link communication model in different weather environment is established. The calculation functions of signal-to-noise ratio and bit error rate in the longdistance link communication are derived. Through the calculation and analysis, the attenuation of laser's power caused by fog and haze with different visibilities is obtained. The results show that the lower is the visibility under fog or haze days, the faster is the attenuation of the laser's power and the higher is the bit error rate of the communication link. The atmospheric attenuation can be reduced by increasing the laser's power. The results verify the feasibility of the MIMO-OFDM atmospheric laser link communication model. The proposed model has a certain guiding significance for the further study of reliable data transmission in the ultra-long-range ballistic.

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Detection method for the dynamic signal of sky screen-based velocity measurement system using Bayesian Generalized Likelihood Ratio Tests

Cited by 11 publications

References 12 publications

Detection of Flying Metal Bodies Based on Photoelectric Composite Sensing

Detection of Flying Metal Bodies Based on Photoelectric Composite Sensing

An Information Recognition and Time Extraction Method of Tracking a Flying Target with a Sky Screen Sensor Based on Wavelet Modulus Maxima Theory

Data transmission bit error rate modeling and analysis of multi‐screen measurement system based on optical communication link

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