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2012 Vol. 34, No. 11
Display Method:
2012, 34(11): 2541-2547.
doi: 10.3724/SP.J.1146.2012.00547
Abstract:
The single hydrophone matched field localization for non-cooperative underwater acoustic pulse signals is studied. The frequency of underwater acoustic pulse signals is firstly estimated by means of designing the time-frequency distribution with adap...
The single hydrophone matched field localization for non-cooperative underwater acoustic pulse signals is studied. The frequency of underwater acoustic pulse signals is firstly estimated by means of designing the time-frequency distribution with adap...
2012, 34(11): 2548-2553.
doi: 10.3724/SP.J.1146.2012.00411
Abstract:
The impulsive interference occurred in the received signals causes bad performance in signal processing. Thus noise should be suppressed. In this paper, a novel method based on polarization analysis is proposed to reject transient noise. With the pol...
The impulsive interference occurred in the received signals causes bad performance in signal processing. Thus noise should be suppressed. In this paper, a novel method based on polarization analysis is proposed to reject transient noise. With the pol...
2012, 34(11): 2554-2560.
doi: 10.3724/SP.J.1146.2012.00347
Abstract:
In the current Compressed Sensing (CS) theory, signal reconstruction depends on presetting an appropriate sparsifying dictionary. For signals characterized by parametric models, this dictionary is known to be a parameterized dictionary of a certain f...
In the current Compressed Sensing (CS) theory, signal reconstruction depends on presetting an appropriate sparsifying dictionary. For signals characterized by parametric models, this dictionary is known to be a parameterized dictionary of a certain f...
2012, 34(11): 2561-2567.
doi: 10.3724/SP.J.1146.2012.00510
Abstract:
Traditional example based audio retrieval algorithms use forward index, with which, retrieval processing need to traverse the whole database, resulting in intolerable response time. This paper proposes an inverted-index based audio retrieval method. ...
Traditional example based audio retrieval algorithms use forward index, with which, retrieval processing need to traverse the whole database, resulting in intolerable response time. This paper proposes an inverted-index based audio retrieval method. ...
2012, 34(11): 2568-2573.
doi: 10.3724/SP.J.1146.2012.00646
Abstract:
Multi-view stereo angle is the key factor for FTV (Free-viewpoint TV) acquisition/stereo display. A multi-view stereo angle model is established. With the model, factors which impact on stereo angle can be found out. Using stereo angle model, multi-v...
Multi-view stereo angle is the key factor for FTV (Free-viewpoint TV) acquisition/stereo display. A multi-view stereo angle model is established. With the model, factors which impact on stereo angle can be found out. Using stereo angle model, multi-v...
2012, 34(11): 2574-2581.
doi: 10.3724/SP.J.1146.2012.00548
Abstract:
To solve the problem of strong randomicity and high memory cost of fast retrieval method Locality Sensitive Hashing (LSH) based on random projection, a fast retrieval method is presented based on multi table frequent items voting and bucket map chain...
To solve the problem of strong randomicity and high memory cost of fast retrieval method Locality Sensitive Hashing (LSH) based on random projection, a fast retrieval method is presented based on multi table frequent items voting and bucket map chain...
2012, 34(11): 2582-2586.
doi: 10.3724/SP.J.1146.2012.00610
Abstract:
Radio Frequency IDentification (RFID) tag search protocols are used in a situation where an reader finds a specific tag among multiple tags, which play important roles in many RFID applications. However, the existing protocols either have security we...
Radio Frequency IDentification (RFID) tag search protocols are used in a situation where an reader finds a specific tag among multiple tags, which play important roles in many RFID applications. However, the existing protocols either have security we...
2012, 34(11): 2587-2593.
doi: 10.3724/SP.J.1146.2012.00441
Abstract:
Compared with the traditional strip map mode, as a new imaging mode, Circular Scanning SAR (CSSAR) can be used to perform imaging with a wider area in a shorter time. However, due to the influence of the circular orbit, it is difficult to obtain the ...
Compared with the traditional strip map mode, as a new imaging mode, Circular Scanning SAR (CSSAR) can be used to perform imaging with a wider area in a shorter time. However, due to the influence of the circular orbit, it is difficult to obtain the ...
2012, 34(11): 2594-2600.
doi: 10.3724/SP.J.1146.2012.00377
Abstract:
Different signal acquisitions and imaging algorithms have been presented for the wide swath imaging. However, most of these methods used in ScanSAR and Terrain Observation by Progressive scans SAR (TOPSAR) decrease the azimuth resolution for the whol...
Different signal acquisitions and imaging algorithms have been presented for the wide swath imaging. However, most of these methods used in ScanSAR and Terrain Observation by Progressive scans SAR (TOPSAR) decrease the azimuth resolution for the whol...
2012, 34(11): 2601-2607.
doi: 10.3724/SP.J.1146.2012.00298
Abstract:
The UWB radar is a promising technique in fire rescue operations, police awareness, urban-warfare, life-threatening and other fields for noncontact measurement of the tracking and imaging of moving persons behind walls. Based on the UWB short-pulse t...
The UWB radar is a promising technique in fire rescue operations, police awareness, urban-warfare, life-threatening and other fields for noncontact measurement of the tracking and imaging of moving persons behind walls. Based on the UWB short-pulse t...
2012, 34(11): 2608-2614.
doi: 10.3724/SP.J.1146.2012.00724
Abstract:
The Blind Speed Side Lobes (BSSL) may increase the false alarm probability and deteriorate the detection performance of the long time coherent integration method, namely, the Radon-Fourier Transform (RFT). A novel BSSL suppression method based on the...
The Blind Speed Side Lobes (BSSL) may increase the false alarm probability and deteriorate the detection performance of the long time coherent integration method, namely, the Radon-Fourier Transform (RFT). A novel BSSL suppression method based on the...
2012, 34(11): 2615-2620.
doi: 10.3724/SP.J.1146.2012.00582
Abstract:
A method of miss distance parameters estimation by utilizing simultaneously Doppler frequency and range information is proposed. According to the noise covariance of measured data, the proposed method first deals with Doppler frequency and range info...
A method of miss distance parameters estimation by utilizing simultaneously Doppler frequency and range information is proposed. According to the noise covariance of measured data, the proposed method first deals with Doppler frequency and range info...
2012, 34(11): 2621-2627.
doi: 10.3724/SP.J.1146.2012.00043
Abstract:
Due to wide beam and low angular accuracy for VHF radar, distributed coherent arrays are proposed for aperture extension and high angular accuracy, which is based on interferometric radar principles and 2-dimensional Direction Of Arrival (DOA) estima...
Due to wide beam and low angular accuracy for VHF radar, distributed coherent arrays are proposed for aperture extension and high angular accuracy, which is based on interferometric radar principles and 2-dimensional Direction Of Arrival (DOA) estima...
2012, 34(11): 2628-2634.
doi: 10.3724/SP.J.1146.2012.00448
Abstract:
An unsupervised classification algorithm established on the Bayesian Information Criterion (BIC) is presented for Polarimetric and Interferometric SAR (PolInSAR) images. First, an initial classification result is obtained by using Shannon entropy cha...
An unsupervised classification algorithm established on the Bayesian Information Criterion (BIC) is presented for Polarimetric and Interferometric SAR (PolInSAR) images. First, an initial classification result is obtained by using Shannon entropy cha...
2012, 34(11): 2635-2641.
doi: 10.3724/SP.J.1146.2012.00407
Abstract:
Combination of the interferometric theory and MIMO radar with simplified vector sensors, a novel algorithm for joint Direction Of Departure (DOD), Direction Of Arrival (DOA) and polarization estimation in the interferometric MIMO radar with vector se...
Combination of the interferometric theory and MIMO radar with simplified vector sensors, a novel algorithm for joint Direction Of Departure (DOD), Direction Of Arrival (DOA) and polarization estimation in the interferometric MIMO radar with vector se...
2012, 34(11): 2642-2647.
doi: 10.3724/SP.J.1146.2012.00148
Abstract:
In this paper, three aspects which are the orbital eccentricity, the ellipsoidal earth model and the Earths self-rotation are considered to calculate the accurate values of Doppler centroid and Doppler FM rate of spaceborne SAR. Since the 2-D attitud...
In this paper, three aspects which are the orbital eccentricity, the ellipsoidal earth model and the Earths self-rotation are considered to calculate the accurate values of Doppler centroid and Doppler FM rate of spaceborne SAR. Since the 2-D attitud...
2012, 34(11): 2648-2653.
doi: 10.3724/SP.J.1146.2012.00540
Abstract:
The signal structure of China Mobile Multimedia Broadcasting (CMMB) is significantly different from Europe Digital Video Broadcasting-Terrestrial (DVB-T) signal, which implies that the CMMB-based passive bistatic radar faces some new problems in sign...
The signal structure of China Mobile Multimedia Broadcasting (CMMB) is significantly different from Europe Digital Video Broadcasting-Terrestrial (DVB-T) signal, which implies that the CMMB-based passive bistatic radar faces some new problems in sign...
2012, 34(11): 2654-2659.
doi: 10.3724/SP.J.1146.2012.00400
Abstract:
Characteristics of Unintentional Modulation On Pulse (UMOP) are key and fundamental for radar Specific Emitter Identification (SEI). In this paper, the common used unintentional frequency and phase modulation features are compared with the considerat...
Characteristics of Unintentional Modulation On Pulse (UMOP) are key and fundamental for radar Specific Emitter Identification (SEI). In this paper, the common used unintentional frequency and phase modulation features are compared with the considerat...
2012, 34(11): 2660-2665.
doi: 10.3724/SP.J.1146.2012.00381
Abstract:
In this paper, the shortcomings of traditional methods for wave motions removing are analyzed and an iterative method for ocean surface current retrieval by Along-Track Interferometric SAR (ATI-SAR) based on a microwave ocean imaging simulation model...
In this paper, the shortcomings of traditional methods for wave motions removing are analyzed and an iterative method for ocean surface current retrieval by Along-Track Interferometric SAR (ATI-SAR) based on a microwave ocean imaging simulation model...
2012, 34(11): 2666-2671.
doi: 10.3724/SP.J.1146.2012.00577
Abstract:
A novel classification method of hyperspectral image based on sparse representation is proposed. First, the training data is used to design a structured dictionary, and a classification model of hyperspectral image is built based on sparse representa...
A novel classification method of hyperspectral image based on sparse representation is proposed. First, the training data is used to design a structured dictionary, and a classification model of hyperspectral image is built based on sparse representa...
2012, 34(11): 2672-2679.
doi: 10.3724/SP.J.1146.2012.00859
Abstract:
Because of the shortage of noise removal and small target preservation for the conventional three- dimensional Otsu (3D-Otsu) method, a new method based on adaptive Gaussian weighted directional window is proposed. The new method improves the window ...
Because of the shortage of noise removal and small target preservation for the conventional three- dimensional Otsu (3D-Otsu) method, a new method based on adaptive Gaussian weighted directional window is proposed. The new method improves the window ...
2012, 34(11): 2680-2686.
doi: 10.3724/SP.J.1146.2012.00342
Abstract:
Signcryption combines the functionalities of signature and encryption and costs less than that required by the traditional signature-then-encryption approach. On the basis of Li et al. (2010) attribute-based signature, a new attributes-based signcryp...
Signcryption combines the functionalities of signature and encryption and costs less than that required by the traditional signature-then-encryption approach. On the basis of Li et al. (2010) attribute-based signature, a new attributes-based signcryp...
2012, 34(11): 2687-2693.
doi: 10.3724/SP.J.1146.2012.00554
Abstract:
Single sparse matrix can not meet the complexity of the compressed sensing process in wireless sensor networks. Cooperative compressed sensing mechanism is proposed in this paper. According to the energy consumption status of nodes, the sparse matrix...
Single sparse matrix can not meet the complexity of the compressed sensing process in wireless sensor networks. Cooperative compressed sensing mechanism is proposed in this paper. According to the energy consumption status of nodes, the sparse matrix...
2012, 34(11): 2694-2699.
doi: 10.3724/SP.J.1146.2012.00636
Abstract:
Smart Micro Grid (SMG), the system integrating distributed renewable generation, energy storage devices and intelligent inverter, provides efficient approach to utilize energy and decrease carbon emission. To achieve the reliable automated operation,...
Smart Micro Grid (SMG), the system integrating distributed renewable generation, energy storage devices and intelligent inverter, provides efficient approach to utilize energy and decrease carbon emission. To achieve the reliable automated operation,...
2012, 34(11): 2700-2706.
doi: 10.3724/SP.J.1146.2012.00491
Abstract:
DataBase Complex Networks (DBCN) is a kind of metric for management information systems, which provides a simplified and visualized description of business logic and a self-introduced documentary. To extract DBCNs, two algorithms are proposed: (1) ba...
DataBase Complex Networks (DBCN) is a kind of metric for management information systems, which provides a simplified and visualized description of business logic and a self-introduced documentary. To extract DBCNs, two algorithms are proposed: (1) ba...
2012, 34(11): 2707-2714.
doi: 10.3724/SP.J.1146.2012.00508
Abstract:
An Autonomic Energy-Saving Management Mechanism (AESMM) based on autonomic management is proposed for saving energy in wireless cellular networks. Energy-saving model is analyzed firstly, and then procedures of AESMM are introduced. As two key issues...
An Autonomic Energy-Saving Management Mechanism (AESMM) based on autonomic management is proposed for saving energy in wireless cellular networks. Energy-saving model is analyzed firstly, and then procedures of AESMM are introduced. As two key issues...
2012, 34(11): 2715-2720.
doi: 10.3724/SP.J.1146.2012.00617
Abstract:
Compared with other types of Clos-netwok switch, the Memory-Memory-Memory (MMM) switch minimizes the time required to configure a Clos-network switch. However the use of buffers in the middle stage of an MMM switch can potentially cause the forwardin...
Compared with other types of Clos-netwok switch, the Memory-Memory-Memory (MMM) switch minimizes the time required to configure a Clos-network switch. However the use of buffers in the middle stage of an MMM switch can potentially cause the forwardin...
2012, 34(11): 2721-2727.
doi: 10.3724/SP.J.1146.2012.00364
Abstract:
Providing reliable multicast service in multi-hop wireless network faces many technique challenges, among which packet loss recovery is one of most important issues. In this paper, an efficient packet loss recovery framework is proposed based on rand...
Providing reliable multicast service in multi-hop wireless network faces many technique challenges, among which packet loss recovery is one of most important issues. In this paper, an efficient packet loss recovery framework is proposed based on rand...
2012, 34(11): 2728-2733.
doi: 10.3724/SP.J.1146.2012.00603
Abstract:
A hybrid beamforming technology for 60 GHz uplink communication system is proposed in order to compromise between performance and complexity. The beam-switching by a predefined beam codebook is applied at the transmitter, while DOA estimation based o...
A hybrid beamforming technology for 60 GHz uplink communication system is proposed in order to compromise between performance and complexity. The beam-switching by a predefined beam codebook is applied at the transmitter, while DOA estimation based o...
2012, 34(11): 2734-2740.
doi: 10.3724/SP.J.1146.2012.00553
Abstract:
With the special requirements of on-board switching for satellite communications, the divide-and- conquer dispatching scheme is proposed based on Memory-Space-Memory (MSM) Clos network switches. By introducing the notion of colliding fields, the matc...
With the special requirements of on-board switching for satellite communications, the divide-and- conquer dispatching scheme is proposed based on Memory-Space-Memory (MSM) Clos network switches. By introducing the notion of colliding fields, the matc...
2012, 34(11): 2741-2747.
doi: 10.3724/SP.J.1146.2012.00466
Abstract:
Wireless relay and network coding are two critical techniques to improve the reliability and increase the throughput for wireless communication systems. The performance analysis and the related optimized design of Complex Field Network Coding (CFNC) ...
Wireless relay and network coding are two critical techniques to improve the reliability and increase the throughput for wireless communication systems. The performance analysis and the related optimized design of Complex Field Network Coding (CFNC) ...
2012, 34(11): 2748-2754.
doi: 10.3724/SP.J.1146.2012.00424
Abstract:
In practical communication of two-way relay channel, the transmission rate is always asymmetric because of the asymmetric channel quality, transmission power and rate requirement. This paper proposes two schemes of asymmetric transmission based on ph...
In practical communication of two-way relay channel, the transmission rate is always asymmetric because of the asymmetric channel quality, transmission power and rate requirement. This paper proposes two schemes of asymmetric transmission based on ph...
2012, 34(11): 2755-2760.
doi: 10.3724/SP.J.1146.2012.00518
Abstract:
How to achieve precise synchronization is a technical problem that must be addressed in today,s military operations in the highly dynamic conditions. In the conditions, the bit rate offset and carrier frequency offset will affect the precise synchron...
How to achieve precise synchronization is a technical problem that must be addressed in today,s military operations in the highly dynamic conditions. In the conditions, the bit rate offset and carrier frequency offset will affect the precise synchron...
2012, 34(11): 2761-2766.
doi: 10.3724/SP.J.1146.2012.00133
Abstract:
Compressed Sensing (CS) theory provides a new solution for low-rate sampling design of Impulse Radio Ultra-WideBand (IR-UWB) receiver, but the quantization process is usually idealized in existent CS based sampling architectures. In this paper, the i...
Compressed Sensing (CS) theory provides a new solution for low-rate sampling design of Impulse Radio Ultra-WideBand (IR-UWB) receiver, but the quantization process is usually idealized in existent CS based sampling architectures. In this paper, the i...
2012, 34(11): 2767-2773.
doi: 10.3724/SP.J.1146.2012.00165
Abstract:
In order to describe well the nonlinear time-varying characteristics of spectrum occupancy states which has not been related previously, a novel spectrum occupancy state time series modeling method based on Exponential Generalized Auto Regressive Con...
In order to describe well the nonlinear time-varying characteristics of spectrum occupancy states which has not been related previously, a novel spectrum occupancy state time series modeling method based on Exponential Generalized Auto Regressive Con...
2012, 34(11): 2774-2784.
doi: 10.3724/SP.J.1146.2012.00555
Abstract:
Differential Power Analysis (DPA) attacks exploit the data or instruction dependency of the power consumption of the cryptographic devices during encryption/decryption process. A large number of power traces are used to analyze the cipher key informa...
Differential Power Analysis (DPA) attacks exploit the data or instruction dependency of the power consumption of the cryptographic devices during encryption/decryption process. A large number of power traces are used to analyze the cipher key informa...
2012, 34(11): 2785-2789.
doi: 10.3724/SP.J.1146.2012.00596
Abstract:
With the maturity of current detecting technology based on high-frequency ground wave radar, current detecting precision has gained increasing attention. This paper aims at discussing the vector current velocity detecting precision of T/Rm-Rb system ...
With the maturity of current detecting technology based on high-frequency ground wave radar, current detecting precision has gained increasing attention. This paper aims at discussing the vector current velocity detecting precision of T/Rm-Rb system ...
2012, 34(11): 2790-2794.
doi: 10.3724/SP.J.1146.2012.00676
Abstract:
An ultra-thin metamaterial absorber is designed and applied to reducing in-band Radar Cross Section (RCS) of waveguide slot antenna. The absorber is consisted solely of two metallic layers separated by a lossy dielectric spacer. In spite of its very ...
An ultra-thin metamaterial absorber is designed and applied to reducing in-band Radar Cross Section (RCS) of waveguide slot antenna. The absorber is consisted solely of two metallic layers separated by a lossy dielectric spacer. In spite of its very ...
