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2021 Vol. 43, No. 3
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2021, 43(3): .
Abstract:
2021, 43(3): 509-515.
doi: 10.11999/JEIT200768
Abstract:
Radar detection of Unmanned Aerial Vehicle (UAV) is a big problem. To address this problem, a detection method with dual polarization radar is proposed. First, radar reduces the detection threshold to make the UAV be detected by using the traditional...
Radar detection of Unmanned Aerial Vehicle (UAV) is a big problem. To address this problem, a detection method with dual polarization radar is proposed. First, radar reduces the detection threshold to make the UAV be detected by using the traditional...
2021, 43(3): 516-522.
doi: 10.11999/JEIT200229
Abstract:
To solve the de-correlation problem due to Doppler frequency bias for multistatic radar system, a main-lobe jamming suppression algorithm for multistatic radar based on range-Doppler bias offsetting is proposed. First, based on the cross correlation ...
To solve the de-correlation problem due to Doppler frequency bias for multistatic radar system, a main-lobe jamming suppression algorithm for multistatic radar based on range-Doppler bias offsetting is proposed. First, based on the cross correlation ...
2021, 43(3): 523-530.
doi: 10.11999/JEIT200644
Abstract:
In this paper, under the generalized Pareto distributed sea clutter, the Constant False Alarm Rate (CFAR) properties of Cell-Averaging (CA) and Order-Statistic (OS) non-coherent detectors are studied, the false alarm probability formulas of the two n...
In this paper, under the generalized Pareto distributed sea clutter, the Constant False Alarm Rate (CFAR) properties of Cell-Averaging (CA) and Order-Statistic (OS) non-coherent detectors are studied, the false alarm probability formulas of the two n...
2021, 43(3): 531-538.
doi: 10.11999/JEIT200449
Abstract:
Group target tracking is an efficient method to measure the states of airborne flocks. The first step of group target tracking is track initiation, including target clustering and track promotion. The state-of-the-art algorithms require mutual simila...
Group target tracking is an efficient method to measure the states of airborne flocks. The first step of group target tracking is track initiation, including target clustering and track promotion. The state-of-the-art algorithms require mutual simila...
2021, 43(3): 539-546.
doi: 10.11999/JEIT200636
Abstract:
In the scenario of multi-target tracking by a radar network system, a Radio Frequency (RF) stealth-based optimal RF resource allocation algorithm in radar network is proposed. Firstly, the Bayesian Cramer-Rao Lower Bound (BCRLB) of target tracking er...
In the scenario of multi-target tracking by a radar network system, a Radio Frequency (RF) stealth-based optimal RF resource allocation algorithm in radar network is proposed. Firstly, the Bayesian Cramer-Rao Lower Bound (BCRLB) of target tracking er...
2021, 43(3): 547-554.
doi: 10.11999/JEIT200595
Abstract:
Vortex ElectroMagnetic (EM) wave with Orbital Angular Momentum (OAM) is widely concerned in radar applications. With vortex EM wave, not only the linear Doppler shift of the target can be observed, but also the angular Doppler shift information can b...
Vortex ElectroMagnetic (EM) wave with Orbital Angular Momentum (OAM) is widely concerned in radar applications. With vortex EM wave, not only the linear Doppler shift of the target can be observed, but also the angular Doppler shift information can b...
2021, 43(3): 555-563.
doi: 10.11999/JEIT200605
Abstract:
For removing non-weather echoes from the data of dual-polarization weather radar, a clutter filtering method based on Spectral Polarimetric Parameters (SPP) is presented in this paper. Unlike the traditional time- or frequency-domain clutter suppress...
For removing non-weather echoes from the data of dual-polarization weather radar, a clutter filtering method based on Spectral Polarimetric Parameters (SPP) is presented in this paper. Unlike the traditional time- or frequency-domain clutter suppress...
2021, 43(3): 564-571.
doi: 10.11999/JEIT200075
Abstract:
Multi-ballistic targets have different translational parameters in midcouse. The former translational compensation methods for single target and group targets with the same translational parameters are no longer applicable. In order to solve this pro...
Multi-ballistic targets have different translational parameters in midcouse. The former translational compensation methods for single target and group targets with the same translational parameters are no longer applicable. In order to solve this pro...
2021, 43(3): 572-579.
doi: 10.11999/JEIT200572
Abstract:
To demonstrate the performance of beam-pattern and clutter distribution for airborne conformal radar due to the bending effect of carrier, the half-uniform circular array and fan-shaped array with the same radius are compared in the array synthesis c...
To demonstrate the performance of beam-pattern and clutter distribution for airborne conformal radar due to the bending effect of carrier, the half-uniform circular array and fan-shaped array with the same radius are compared in the array synthesis c...
2021, 43(3): 580-588.
doi: 10.11999/JEIT200655
Abstract:
Considering that the receiving data of Over-The-Horizon (OTH) radar is complicated, a signal analysis method based on various domains and maps is proposed, and the characteristics of sea-clutter, transient interference and radio frequency interferenc...
Considering that the receiving data of Over-The-Horizon (OTH) radar is complicated, a signal analysis method based on various domains and maps is proposed, and the characteristics of sea-clutter, transient interference and radio frequency interferenc...
2021, 43(3): 589-597.
doi: 10.11999/JEIT200127
Abstract:
In order to solve incomplete prior information of radar in non-cooperative electronic countermeasure environment, a novel recognition algorithm named ISNB (Improved Semi-supervised Naïve Bayes) based on the energy cumulant of Choi-Williams Distributi...
In order to solve incomplete prior information of radar in non-cooperative electronic countermeasure environment, a novel recognition algorithm named ISNB (Improved Semi-supervised Naïve Bayes) based on the energy cumulant of Choi-Williams Distributi...
2021, 43(3): 598-605.
doi: 10.11999/JEIT200210
Abstract:
In order to mitigate the location ambiguity of radar signal in Low Earth Orbit (LEO) dual-satellite Time Difference Of Arrival (TDOA) location system, the ambiguous characteristics of high PRF signal are analyzed, the process of ghost location genera...
In order to mitigate the location ambiguity of radar signal in Low Earth Orbit (LEO) dual-satellite Time Difference Of Arrival (TDOA) location system, the ambiguous characteristics of high PRF signal are analyzed, the process of ghost location genera...
2021, 43(3): 606-614.
doi: 10.11999/JEIT200685
Abstract:
In most of Synthetic Aperture Radar (SAR) target recognition methods, only the amplitude feature, i.e., intensity of pixels, is used to recognize targets. Nevertheless, due to the speckle noise, only using the amplitude feature will affect the recogn...
In most of Synthetic Aperture Radar (SAR) target recognition methods, only the amplitude feature, i.e., intensity of pixels, is used to recognize targets. Nevertheless, due to the speckle noise, only using the amplitude feature will affect the recogn...
2021, 43(3): 615-622.
doi: 10.11999/JEIT200630
Abstract:
To solve the problems of inter-frame registration difficult, unclear shadow characteristics of fast moving targets and high false alarm probability in traditional Video Synthetic Aperture Radar (ViSAR) moving target detection methods, a novel video S...
To solve the problems of inter-frame registration difficult, unclear shadow characteristics of fast moving targets and high false alarm probability in traditional Video Synthetic Aperture Radar (ViSAR) moving target detection methods, a novel video S...
2021, 43(3): 623-631.
doi: 10.11999/JEIT200292
Abstract:
Due to the echoes of the Inverse Synthetic Aperture Radar (ISAR) imagery are spatially sparse, the conventional convex optimization for the sparse image recovery involves tedious adjustment for the regularization parameter, which seriously limits the...
Due to the echoes of the Inverse Synthetic Aperture Radar (ISAR) imagery are spatially sparse, the conventional convex optimization for the sparse image recovery involves tedious adjustment for the regularization parameter, which seriously limits the...
2021, 43(3): 632-639.
doi: 10.11999/JEIT200319
Abstract:
Microwave photonics radar generates cross-band signals with large bandwidth, providing a basis for precise electromagnetic characteristics description and accurate identification of targets. Meanwhile, a corresponding electromagnetic model parameter ...
Microwave photonics radar generates cross-band signals with large bandwidth, providing a basis for precise electromagnetic characteristics description and accurate identification of targets. Meanwhile, a corresponding electromagnetic model parameter ...
2021, 43(3): 640-649.
doi: 10.11999/JEIT200648
Abstract:
One of the main purposes for space surveillance is to supervise the movement status of non-cooperative space targets, which is also the prerequisite for further on-orbit operations. Because of the rotation of disabled satellites and space debris, it ...
One of the main purposes for space surveillance is to supervise the movement status of non-cooperative space targets, which is also the prerequisite for further on-orbit operations. Because of the rotation of disabled satellites and space debris, it ...
2021, 43(3): 650-656.
doi: 10.11999/JEIT200620
Abstract:
To address the problem that the aperture-dependence of ‘non-hop-go-hop’ time in the existing imaging algorithm for the multiple receivers Synthetic Aperture Sonar(SAS) is ignored and brings the delay error, a imaging algorithm based on the reference ...
To address the problem that the aperture-dependence of ‘non-hop-go-hop’ time in the existing imaging algorithm for the multiple receivers Synthetic Aperture Sonar(SAS) is ignored and brings the delay error, a imaging algorithm based on the reference ...
2021, 43(3): 657-664.
doi: 10.11999/JEIT200650
Abstract:
In the case of diving highly squinted Synthetic Aperture Radar (SAR), the existence of range-dependent squint angle, severe range-azimuth coupling, three-Dimensional (3-D) velocity and acceleration produces two-Dimensional (2-D) spatial-variant Range...
In the case of diving highly squinted Synthetic Aperture Radar (SAR), the existence of range-dependent squint angle, severe range-azimuth coupling, three-Dimensional (3-D) velocity and acceleration produces two-Dimensional (2-D) spatial-variant Range...
2021, 43(3): 665-673.
doi: 10.11999/JEIT200285
Abstract:
Generally, the refractive index of atmosphere is simply 1 by default in Synthetic Aperture Radar (SAR) imaging, that is, the ElectroMagnetic (EM) wave velocity is equal to the speed of light in free-space and the atmospheric absorption is ignored. Ho...
Generally, the refractive index of atmosphere is simply 1 by default in Synthetic Aperture Radar (SAR) imaging, that is, the ElectroMagnetic (EM) wave velocity is equal to the speed of light in free-space and the atmospheric absorption is ignored. Ho...
2021, 43(3): 674-682.
doi: 10.11999/JEIT200338
Abstract:
The classical sparse recovery of Inverse Synthetic Aperture Radar (ISAR) imagery obtains the ISAR image by solving the constrained problem of\begin{document}${\ell _{1}}$\end{document} ![]()
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The classical sparse recovery of Inverse Synthetic Aperture Radar (ISAR) imagery obtains the ISAR image by solving the constrained problem of
2021, 43(3): 683-691.
doi: 10.11999/JEIT200568
Abstract:
Considering the problem of low classification accuracy caused by large intra-class differences and high inter-class similarity in remote sensing image scene classification, a discriminative feature representation method based on dual attention mechan...
Considering the problem of low classification accuracy caused by large intra-class differences and high inter-class similarity in remote sensing image scene classification, a discriminative feature representation method based on dual attention mechan...
2021, 43(3): 692-699.
doi: 10.11999/JEIT200416
Abstract:
Winter wheat is one of the most important food crops in China. Monitoring the soil moisture over winter wheat covered surface can help to solve the problem of poor harvest of winter wheat and waste of agricultural water due to soil water supply. In o...
Winter wheat is one of the most important food crops in China. Monitoring the soil moisture over winter wheat covered surface can help to solve the problem of poor harvest of winter wheat and waste of agricultural water due to soil water supply. In o...
2021, 43(3): 700-707.
doi: 10.11999/JEIT200366
Abstract:
Water segmentation of Synthetic Aperture Radar (SAR) is of great significance in land hydrological monitoring, such as lakes and rivers. Water segmentation accuracy is influenced by the blurring of the boundary between land and water region because o...
Water segmentation of Synthetic Aperture Radar (SAR) is of great significance in land hydrological monitoring, such as lakes and rivers. Water segmentation accuracy is influenced by the blurring of the boundary between land and water region because o...
2021, 43(3): 708-716.
doi: 10.11999/JEIT200656
Abstract:
Off-grid Direction Of Arrival (DOA) estimation aims to handle the mismatch between the actual DOA and the presumed grid points. For DOAs of closely spaced signals, sparse grid points leads to degradation of accuracy and resolution, although dense gri...
Off-grid Direction Of Arrival (DOA) estimation aims to handle the mismatch between the actual DOA and the presumed grid points. For DOAs of closely spaced signals, sparse grid points leads to degradation of accuracy and resolution, although dense gri...
2021, 43(3): 717-726.
doi: 10.11999/JEIT200505
Abstract:
To deal with the problem that the Degree Of Freedom(DOF) of uniform linear array is limited by the number of elements, a new type of coprime array is proposed called Displaced Coprime Array(DCA).It takes use of the conjugate augmented matrix which is...
To deal with the problem that the Degree Of Freedom(DOF) of uniform linear array is limited by the number of elements, a new type of coprime array is proposed called Displaced Coprime Array(DCA).It takes use of the conjugate augmented matrix which is...
2021, 43(3): 727-734.
doi: 10.11999/JEIT200637
Abstract:
As for long-range target Direction of Arrival (DoA) estimation with benthonic long linear arrays under near-field acoustic interference and space non-stationary noise, a novel joint DoA estimation of subarrays algorithm is proposed, which is based on...
As for long-range target Direction of Arrival (DoA) estimation with benthonic long linear arrays under near-field acoustic interference and space non-stationary noise, a novel joint DoA estimation of subarrays algorithm is proposed, which is based on...
An Algebraic Solution for Single-Observer Passive Coherent Location Using DOA-TDOA-FDOA Measurements
2021, 43(3): 735-744.
doi: 10.11999/JEIT200470
Abstract:
To achieve the target localization using single-observer receiving multiple external illuminators, an algebraic solution based on two-step Weighted Least Squares (2WLS) is proposed to find the target position and velocity from Direction Of Arrival (D...
To achieve the target localization using single-observer receiving multiple external illuminators, an algebraic solution based on two-step Weighted Least Squares (2WLS) is proposed to find the target position and velocity from Direction Of Arrival (D...
2021, 43(3): 745-751.
doi: 10.11999/JEIT200541
Abstract:
In order to realize the fast direction estimation of underwater targets under the conditions of less snapshot and low SNR, a sparse decomposition model of vector hydrophone array direction estimation is established. The real value conversion techniqu...
In order to realize the fast direction estimation of underwater targets under the conditions of less snapshot and low SNR, a sparse decomposition model of vector hydrophone array direction estimation is established. The real value conversion techniqu...
2021, 43(3): 752-757.
doi: 10.11999/JEIT200582
Abstract:
In mobile OFDM underwater acoustic communication systems, the compressed sensing-based sparse channel estimation methods suffer from high computational complexity, which is not suitable for real-time communication. To solve this problem, this paper p...
In mobile OFDM underwater acoustic communication systems, the compressed sensing-based sparse channel estimation methods suffer from high computational complexity, which is not suitable for real-time communication. To solve this problem, this paper p...
2021, 43(3): 758-766.
doi: 10.11999/JEIT200611
Abstract:
Single-Carrier Frequency-Domain Equalization (SC-FDE) is one of the key techniques to achieve high data-rate transmissions in underwater acoustic communications. However, the periodically inserted prefixes or suffixes, in forms of cyclic-prefixes or ...
Single-Carrier Frequency-Domain Equalization (SC-FDE) is one of the key techniques to achieve high data-rate transmissions in underwater acoustic communications. However, the periodically inserted prefixes or suffixes, in forms of cyclic-prefixes or ...
2021, 43(3): 767-772.
doi: 10.11999/JEIT200629
Abstract:
Sallow water acoustic channel is severely affected by time-space variation, which destroys the robustness of underwater acoustic communication system. By introducing manifold learning in the analysis of high dimensional underwater environment and cha...
Sallow water acoustic channel is severely affected by time-space variation, which destroys the robustness of underwater acoustic communication system. By introducing manifold learning in the analysis of high dimensional underwater environment and cha...
2021, 43(3): 773-780.
doi: 10.11999/JEIT200540
Abstract:
In view of the problem that the performance of the Adaptive Line-spectrum Enhancement (ALE) algorithm drops sharply under low signal-to-noise ratio, a two-level ALE algorithm is proposed. Based on the ordinary ALE algorithm, the Fourier transform of ...
In view of the problem that the performance of the Adaptive Line-spectrum Enhancement (ALE) algorithm drops sharply under low signal-to-noise ratio, a two-level ALE algorithm is proposed. Based on the ordinary ALE algorithm, the Fourier transform of ...
2021, 43(3): 781-787.
doi: 10.11999/JEIT200383
Abstract:
The silent location algorithm for underwater sensor network is a time-synchronization free algorithm that can serve multiple users. No sound is needed of the target node in the whole process which make the algorithm secluded and extended. In this pap...
The silent location algorithm for underwater sensor network is a time-synchronization free algorithm that can serve multiple users. No sound is needed of the target node in the whole process which make the algorithm secluded and extended. In this pap...
2021, 43(3): 788-795.
doi: 10.11999/JEIT200704
Abstract:
To better understand and utilize the acoustic field in shallow sea, a theoretical method that can give the full-wave solution is proposed, then the complex integral expression of the acoustic field is given. The complex integral fraction is solved in...
To better understand and utilize the acoustic field in shallow sea, a theoretical method that can give the full-wave solution is proposed, then the complex integral expression of the acoustic field is given. The complex integral fraction is solved in...
2021, 43(3): 796-802.
doi: 10.11999/JEIT200744
Abstract:
Imaging method based on motion compensation for forward-looking scanning sonar is proposed. By using backward mapping, sector imaging region in the Cartesian coordinate system is converted into polar coordinates. Then two-dimension interpolation is e...
Imaging method based on motion compensation for forward-looking scanning sonar is proposed. By using backward mapping, sector imaging region in the Cartesian coordinate system is converted into polar coordinates. Then two-dimension interpolation is e...
2021, 43(3): 803-808.
doi: 10.11999/JEIT200584
Abstract:
Time Delay Estimation(TDE) is an important research subject in underwater acoustic field. Passive direction-finding and passive location based on TDE are important brunches in passive location of underwater acoustic target. At present, the common TDE...
Time Delay Estimation(TDE) is an important research subject in underwater acoustic field. Passive direction-finding and passive location based on TDE are important brunches in passive location of underwater acoustic target. At present, the common TDE...
2021, 43(3): 809-816.
doi: 10.11999/JEIT200634
Abstract:
Marine environment noise and reverberation interference are serious, and the poor target separability is the bottleneck problem in active sonar target classification and recognition. In order to solve this problem, based on the echo signal model of a...
Marine environment noise and reverberation interference are serious, and the poor target separability is the bottleneck problem in active sonar target classification and recognition. In order to solve this problem, based on the echo signal model of a...
2021, 43(3): 817-825.
doi: 10.11999/JEIT200660
Abstract:
Traditional Orthogonal Matching Pursuit (OMP) method needs high oversampling factor and computational overhead to estimate off-grid path delays in underwater acoustic Orthogonal Frequency Division Multiplexing (OFDM) systems. In this paper, the idea ...
Traditional Orthogonal Matching Pursuit (OMP) method needs high oversampling factor and computational overhead to estimate off-grid path delays in underwater acoustic Orthogonal Frequency Division Multiplexing (OFDM) systems. In this paper, the idea ...
2021, 43(3): 826-833.
doi: 10.11999/JEIT200446
Abstract:
The small moving target detection in complex underwater environment is complicated due to the weak target signal strength and low signal-to-clutter ratio. A Track-Before-Detect (TBD) algorithm based on subspace projection is proposed to solve these p...
The small moving target detection in complex underwater environment is complicated due to the weak target signal strength and low signal-to-clutter ratio. A Track-Before-Detect (TBD) algorithm based on subspace projection is proposed to solve these p...
2021, 43(3): 834-841.
doi: 10.11999/JEIT200570
Abstract:
Autonomous Underwater Vehicle (AUV) localization is one of the main methods to locate underwater targets in large areas. Considering the defects of single AUV positioning, such as long positioning period, low positioning coverage area and large accum...
Autonomous Underwater Vehicle (AUV) localization is one of the main methods to locate underwater targets in large areas. Considering the defects of single AUV positioning, such as long positioning period, low positioning coverage area and large accum...
2021, 43(3): 842-849.
doi: 10.11999/JEIT200649
Abstract:
In view of enhancing the time delay estimation resolution for the target echo in a complex shallow-water environment, thus improving the target detection ability of the active sonar system. A high-resolution time delay estimation technique is propose...
In view of enhancing the time delay estimation resolution for the target echo in a complex shallow-water environment, thus improving the target detection ability of the active sonar system. A high-resolution time delay estimation technique is propose...
2021, 43(3): 850-856.
doi: 10.11999/JEIT200315
Abstract:
To solve the problems of time-varying underwater acoustic channel estimation and equalization, an estimation and equalization algorithm of time-varying underwater acoustic channel based on Superimposed Training (ST) and Low-complexity Turbo Equalizat...
To solve the problems of time-varying underwater acoustic channel estimation and equalization, an estimation and equalization algorithm of time-varying underwater acoustic channel based on Superimposed Training (ST) and Low-complexity Turbo Equalizat...
2021, 43(3): 857-864.
doi: 10.11999/JEIT200657
Abstract:
In order to obtain higher resolution and avoid the failure of Two-Dimensional (2D) of Direction-Of-Arrival (DOA) estimation, One-Dimensional (1D) spatial DOA estimation method, vertical DOA estimation via Vernier method and horizontal DOA estimation ...
In order to obtain higher resolution and avoid the failure of Two-Dimensional (2D) of Direction-Of-Arrival (DOA) estimation, One-Dimensional (1D) spatial DOA estimation method, vertical DOA estimation via Vernier method and horizontal DOA estimation ...
2021, 43(3): 865-872.
doi: 10.11999/JEIT200672
Abstract:
The output Signal-to-Noise Ratio(SNR) of conventional broadband energy detection is reduced in multi-target and strong interference environment, and the detection performance is great reduced. In order to solve the problem, a broadband detection meth...
The output Signal-to-Noise Ratio(SNR) of conventional broadband energy detection is reduced in multi-target and strong interference environment, and the detection performance is great reduced. In order to solve the problem, a broadband detection meth...
2021, 43(3): 873-880.
doi: 10.11999/JEIT200638
Abstract:
The underwater positioning system is the essential and necessary equipment for modern deep-sea operations. Accurate time delay estimation is the basis for achieving high-precision localization. However, the performance of time delay estimation will d...
The underwater positioning system is the essential and necessary equipment for modern deep-sea operations. Accurate time delay estimation is the basis for achieving high-precision localization. However, the performance of time delay estimation will d...
