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2011 Vol. 33, No. 8
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2011, 33(8): 1779-1785.
doi: 10.3724/SP.J.1146.2010.01407
Abstract:
On the background of low-altitude radar seeker detecting the sea surface targets, this paper analyzes the effect of the multipath scattering and sea clutter on the detection performance of radar seeker. On the basis of modeling the target echo, specu...
On the background of low-altitude radar seeker detecting the sea surface targets, this paper analyzes the effect of the multipath scattering and sea clutter on the detection performance of radar seeker. On the basis of modeling the target echo, specu...
2011, 33(8): 1786-1791.
doi: 10.3724/SP.J.1146.2010.01339
Abstract:
Compared with the single mode radar, because the transmitter and the receiver are separate, the first- order sea clutter of HF over the horizon hybrid mode radar based on sky wave transmitting and surface wave receiving presents different characteris...
Compared with the single mode radar, because the transmitter and the receiver are separate, the first- order sea clutter of HF over the horizon hybrid mode radar based on sky wave transmitting and surface wave receiving presents different characteris...
2011, 33(8): 1792-1797.
doi: 10.3724/SP.J.1146.2010.01175
Abstract:
High-precision height acquisition needs to correct the interferometric parameters errors by interferometric calibration for Interferometric SAR (InSAR) system. The traditional interferometric calibration method needs more Ground Control Points (GCPs)...
High-precision height acquisition needs to correct the interferometric parameters errors by interferometric calibration for Interferometric SAR (InSAR) system. The traditional interferometric calibration method needs more Ground Control Points (GCPs)...
2011, 33(8): 1798-1802.
doi: 10.3724/SP.J.1146.2010.01423
Abstract:
In order to solve the land-mine classification problem on a Forward-Looking Ground Penetrating Virtual Aperture Radar (FLGPVAR), a new classification algorithm composed of weak classification iteration and adaptive feature selection is proposed. It i...
In order to solve the land-mine classification problem on a Forward-Looking Ground Penetrating Virtual Aperture Radar (FLGPVAR), a new classification algorithm composed of weak classification iteration and adaptive feature selection is proposed. It i...
2011, 33(8): 1803-1808.
doi: 10.3724/SP.J.1146.2010.01352
Abstract:
The moving speed can cause the target image to disperse in the vehicle-mounted forward-looking virtual aperture radar using stepped frequency and it could heavily infect image feature extraction of target. In this paper, the influence on imaging intr...
The moving speed can cause the target image to disperse in the vehicle-mounted forward-looking virtual aperture radar using stepped frequency and it could heavily infect image feature extraction of target. In this paper, the influence on imaging intr...
2011, 33(8): 1809-1815.
doi: 10.3724/SP.J.1146.2010.01153
Abstract:
A novel method of Weighted Minimum Entropy Autofocus (WMEA) algorithm for ISAR imaging is proposed where the objective function of weighed entropy is constructed and then solved with iterative technique to seek for phase errors. Based on Weighted Lea...
A novel method of Weighted Minimum Entropy Autofocus (WMEA) algorithm for ISAR imaging is proposed where the objective function of weighed entropy is constructed and then solved with iterative technique to seek for phase errors. Based on Weighted Lea...
2011, 33(8): 1816-1821.
doi: 10.3724/SP.J.1146.2010.01382
Abstract:
This paper presents a new method to jointly estimate the Direction Of Arrival-Direction Of Departure (DOA-DOD) and Doppler frequency of bistatic MIMO radar. Utilizing the characteristics of the signal received, the Doppler frequency vector, DOA vecto...
This paper presents a new method to jointly estimate the Direction Of Arrival-Direction Of Departure (DOA-DOD) and Doppler frequency of bistatic MIMO radar. Utilizing the characteristics of the signal received, the Doppler frequency vector, DOA vecto...
2011, 33(8): 1822-1827.
doi: 10.3724/SP.J.1146.2010.01335
Abstract:
In this paper, Inverse Synthesis Aperture Radar (ISAR) turntable imaging of near field rotating target with large angle is implemented using UWB (Ultra Wide Band) system. With large and discrete rotation angle, and noise pollution considered, the rob...
In this paper, Inverse Synthesis Aperture Radar (ISAR) turntable imaging of near field rotating target with large angle is implemented using UWB (Ultra Wide Band) system. With large and discrete rotation angle, and noise pollution considered, the rob...
2011, 33(8): 1828-1832.
doi: 10.3724/SP.J.1146.2010.01257
Abstract:
By using multiple-receive apertures in azimuth, Synthetic Aperture Radar (SAR) systems are enabled with high-resolution and wide-swath imaging ability. In this paper, influence of channel imbalances on SAR systems with multiple-receive apertures in a...
By using multiple-receive apertures in azimuth, Synthetic Aperture Radar (SAR) systems are enabled with high-resolution and wide-swath imaging ability. In this paper, influence of channel imbalances on SAR systems with multiple-receive apertures in a...
2011, 33(8): 1833-1838.
doi: 10.3724/SP.J.1146.2010.01242
Abstract:
To overcome the multipath effect, a fast algorithm for low elevation estimation for MIMO radar via matrix pencil is proposed. The signals both in transmit multipath and receive multipath are considered. Firstly, a forward-backward matrix pencil is fo...
To overcome the multipath effect, a fast algorithm for low elevation estimation for MIMO radar via matrix pencil is proposed. The signals both in transmit multipath and receive multipath are considered. Firstly, a forward-backward matrix pencil is fo...
2011, 33(8): 1839-1844.
doi: 10.3724/SP.J.1146.2010.01432
Abstract:
As the HF (High-Frequency) ground wave radar requires high duty-cycle, echo-eclipse becomes a serious problem for short-range target. Complementary signals with double-pulse has zeros sidelobes, but in the case of echo-eclipse, which has very high si...
As the HF (High-Frequency) ground wave radar requires high duty-cycle, echo-eclipse becomes a serious problem for short-range target. Complementary signals with double-pulse has zeros sidelobes, but in the case of echo-eclipse, which has very high si...
2011, 33(8): 1845-1850.
doi: 10.3724/SP.J.1146.2010.01394
Abstract:
Target radiometric error deteriorates SAR image quality. A method is proposed in this paper to analyze theoretically target radiometric error resulting from SAR Block Adaptive Quantization (BAQ). Meanwhile, thermal noise is taken into consideration. ...
Target radiometric error deteriorates SAR image quality. A method is proposed in this paper to analyze theoretically target radiometric error resulting from SAR Block Adaptive Quantization (BAQ). Meanwhile, thermal noise is taken into consideration. ...
2011, 33(8): 1851-1857.
doi: 10.3724/SP.J.1146.2010.01440
Abstract:
A new range-Doppler imaging algorithm is presented for processing bistatic Synthetic Aperture Radar (SAR) data acquired in the hybrid spaceborne/airborne sliding spotlight SAR configuration. This paper firstly presents the 2-D point target spectrum b...
A new range-Doppler imaging algorithm is presented for processing bistatic Synthetic Aperture Radar (SAR) data acquired in the hybrid spaceborne/airborne sliding spotlight SAR configuration. This paper firstly presents the 2-D point target spectrum b...
2011, 33(8): 1858-1863.
doi: 10.3724/SP.J.1146.2010.01321
Abstract:
A novel method is developed to calibrate the non-ideal transfer function and I/Q imbalances in quadrature modulate/demodulate systems which occur frequently in wideband radar systems, without changing the hardware of the radar calibration system. Bas...
A novel method is developed to calibrate the non-ideal transfer function and I/Q imbalances in quadrature modulate/demodulate systems which occur frequently in wideband radar systems, without changing the hardware of the radar calibration system. Bas...
2011, 33(8): 1864-1870.
doi: 10.3724/SP.J.1146.2010.01150
Abstract:
The Symmetrical Triangular Linear Frequency Modulated Continuous Wave (STLFMCW) signal is a sort of typical Low Probability of Intercept (LPI) radar signal. The spectrum distribution characteristics of the STLFMCW signal is analyzed in the FRactional...
The Symmetrical Triangular Linear Frequency Modulated Continuous Wave (STLFMCW) signal is a sort of typical Low Probability of Intercept (LPI) radar signal. The spectrum distribution characteristics of the STLFMCW signal is analyzed in the FRactional...
2011, 33(8): 1871-1876.
doi: 10.3724/SP.J.1146.2010.01081
Abstract:
In the progress of 3-Dimensional (3D) reconstruction from 2-Dimensional (2D) rock slice images, it is difficult to determine the auto-correlation function of the 3D microstructure. The reconstruction method based on the fast Fourier transforms uses e...
In the progress of 3-Dimensional (3D) reconstruction from 2-Dimensional (2D) rock slice images, it is difficult to determine the auto-correlation function of the 3D microstructure. The reconstruction method based on the fast Fourier transforms uses e...
2011, 33(8): 1877-1882.
doi: 10.3724/SP.J.1146.2010.01253
Abstract:
In order to recognize ones identity accurately, a dorsal hand vein recognition algorithm based on establishing and fusing multi Hidden Markov Models (HMMs) is proposed in the paper, where multi-scale subband energies are used as the features of HMMs ...
In order to recognize ones identity accurately, a dorsal hand vein recognition algorithm based on establishing and fusing multi Hidden Markov Models (HMMs) is proposed in the paper, where multi-scale subband energies are used as the features of HMMs ...
2011, 33(8): 1883-1888.
doi: 10.3724/SP.J.1146.2010.01424
Abstract:
Graph based transductive classifiers are dependent on graph structure. Because of redundant and noisy features in high dimensional data, a graph, constructed from these data, can not reflect their distribution information faithfully. Consequently, th...
Graph based transductive classifiers are dependent on graph structure. Because of redundant and noisy features in high dimensional data, a graph, constructed from these data, can not reflect their distribution information faithfully. Consequently, th...
2011, 33(8): 1889-1894.
doi: 10.3724/SP.J.1146.2010.01326
Abstract:
A novel blind joint 2D-angle and frequency estimation method is presented. At first the double parallel linear array is given. The output signal of the array antennas is analyzed and it has quadrilinear model characteristics. The frequency and 2D-ang...
A novel blind joint 2D-angle and frequency estimation method is presented. At first the double parallel linear array is given. The output signal of the array antennas is analyzed and it has quadrilinear model characteristics. The frequency and 2D-ang...
2011, 33(8): 1895-1901.
doi: 10.3724/SP.J.1146.2010.01245
Abstract:
Considering the strict preprocessing requirement of modulation recognition algorithm in fading channels, an algorithm of modulation classification based on cyclostationary test is proposed to promote the classification performance under blind recepti...
Considering the strict preprocessing requirement of modulation recognition algorithm in fading channels, an algorithm of modulation classification based on cyclostationary test is proposed to promote the classification performance under blind recepti...
2011, 33(8): 1902-1907.
doi: 10.3724/SP.J.1146.2010.00978
Abstract:
A new impulsive hybrid observer is firstly designed for nonlinear impulsive hybrid systems based on a Finite State Machine (FSM). Then, a class of impulsive output feedback controller based on the hybrid observer is designed for above systems by appl...
A new impulsive hybrid observer is firstly designed for nonlinear impulsive hybrid systems based on a Finite State Machine (FSM). Then, a class of impulsive output feedback controller based on the hybrid observer is designed for above systems by appl...
2011, 33(8): 1908-1912.
doi: 10.3724/SP.J.1146.2011.00158
Abstract:
In this paper, five constructions of binary sequences with almost optimal autocorrelation magnitude are proposed. The first construction is to use an arbitrary ideal 2-level autocorrelation sequence. The other four constructions are based on some seq...
In this paper, five constructions of binary sequences with almost optimal autocorrelation magnitude are proposed. The first construction is to use an arbitrary ideal 2-level autocorrelation sequence. The other four constructions are based on some seq...
2011, 33(8): 1913-1918.
doi: 10.3724/SP.J.1146.2010.01155
Abstract:
Most traditional probabilistic key management schemes of wireless sensor networks have disadvantages of low connectivity, poor resiliency against node capture, and high energy-consumption. A key sharing model is proposed based on (q,l )-threshold sec...
Most traditional probabilistic key management schemes of wireless sensor networks have disadvantages of low connectivity, poor resiliency against node capture, and high energy-consumption. A key sharing model is proposed based on (q,l )-threshold sec...
2011, 33(8): 1919-1923.
doi: 10.3724/SP.J.1146.2010.01388
Abstract:
Source detection of Wireless Sensor Network (WSN) would encounter problems of lacks of processing power and energy. To overcome these problems, an adaptive compressive sensing algorithm based on energy balance is proposed. Unlike the traditional adap...
Source detection of Wireless Sensor Network (WSN) would encounter problems of lacks of processing power and energy. To overcome these problems, an adaptive compressive sensing algorithm based on energy balance is proposed. Unlike the traditional adap...
2011, 33(8): 1924-1929.
doi: 10.3724/SP.J.1146.2010.01224
Abstract:
Most present lossy link identification algorithms do not achieve both high stability and low computation complexity. A novel Reference Path based lossy link Identification algorithm (RPI) is proposed to address this problem. RPI first selects referen...
Most present lossy link identification algorithms do not achieve both high stability and low computation complexity. A novel Reference Path based lossy link Identification algorithm (RPI) is proposed to address this problem. RPI first selects referen...
2011, 33(8): 1930-1936.
doi: 10.3724/SP.J.1146.2011.00063
Abstract:
In current evidential trust models, there exist some deficiencies such as local trust degree is sensitive to the threshold and the exact meaning of recommendation trust degree for trust target provided by recommender are obscure to the trust source, ...
In current evidential trust models, there exist some deficiencies such as local trust degree is sensitive to the threshold and the exact meaning of recommendation trust degree for trust target provided by recommender are obscure to the trust source, ...
2011, 33(8): 1937-1942.
doi: 10.3724/SP.J.1146.2010.00736
Abstract:
There are some instinctive characteristics in unstructured P2P network, such as frequent reappearance of keywords and uneven resource sharing. To enhance performance of resource searching, a Response Tracing based Resource Searching Mechanism (RTRSM)...
There are some instinctive characteristics in unstructured P2P network, such as frequent reappearance of keywords and uneven resource sharing. To enhance performance of resource searching, a Response Tracing based Resource Searching Mechanism (RTRSM)...
2011, 33(8): 1943-1948.
doi: 10.3724/SP.J.1146.2010.01310
Abstract:
Packet-level multi-path transfers can cause packets reordering at the destination, this profoundly affects TCP performance. Addressing with this problem, reordering performance under multi-path transfers with Round-Robin packet assignment is analyzed...
Packet-level multi-path transfers can cause packets reordering at the destination, this profoundly affects TCP performance. Addressing with this problem, reordering performance under multi-path transfers with Round-Robin packet assignment is analyzed...
2011, 33(8): 1949-1954.
doi: 10.3724/SP.J.1146.2010.01080
Abstract:
Today, Internet is facing two challenges simultaneously: the need of a higher switching speed and provision of a QoS guarantee. The first requires that the buffers in switch must work at a line rate and the second requires that switch should mimic ou...
Today, Internet is facing two challenges simultaneously: the need of a higher switching speed and provision of a QoS guarantee. The first requires that the buffers in switch must work at a line rate and the second requires that switch should mimic ou...
2011, 33(8): 1955-1962.
doi: 10.3724/SP.J.1146.2010.01298
Abstract:
This paper proposes a fast algorithm particularly for the most computational complexity part in a Multiview Video Coding (MVC) systemuni-directional and bi-directional predictions. Based on the stereo-motion consistency constraint, an iterative searc...
This paper proposes a fast algorithm particularly for the most computational complexity part in a Multiview Video Coding (MVC) systemuni-directional and bi-directional predictions. Based on the stereo-motion consistency constraint, an iterative searc...
2011, 33(8): 1963-1968.
doi: 10.3724/SP.J.1146.2010.01379
Abstract:
Soft Output Viterbi Algorithm (SOVA) is more practical than MAP in the algorithms for decoding Turbo codes, because of its shorter decoding delay. In order to decrease further the decoding delay and increase the decoding speed, based on the simple an...
Soft Output Viterbi Algorithm (SOVA) is more practical than MAP in the algorithms for decoding Turbo codes, because of its shorter decoding delay. In order to decrease further the decoding delay and increase the decoding speed, based on the simple an...
2011, 33(8): 1969-1974.
doi: 10.3724/SP.J.1146.2010.01386
Abstract:
The start-up conditions for differential oscillator with an even number of stages are analyzed in this paper. Compared with those that have an odd number of stages, such oscillators may have two stable equilibrium states besides an astable equilibriu...
The start-up conditions for differential oscillator with an even number of stages are analyzed in this paper. Compared with those that have an odd number of stages, such oscillators may have two stable equilibrium states besides an astable equilibriu...
2011, 33(8): 1975-1980.
doi: 10.3724/SP.J.1146.2010.01404
Abstract:
The Adaptive Integral Method (AIM) in conjunction with the Asymptotic Waveform Evaluation (AWE) technique is presented for fast Radar Cross Section (RCS) calculation of arbitrarily shaped perfect electric conductor targets over a broad frequency band...
The Adaptive Integral Method (AIM) in conjunction with the Asymptotic Waveform Evaluation (AWE) technique is presented for fast Radar Cross Section (RCS) calculation of arbitrarily shaped perfect electric conductor targets over a broad frequency band...
2011, 33(8): 1981-1987.
doi: 10.3724/SP.J.1146.2010.01308
Abstract:
Three problems of the coaxial output cavity operating at TM310 mode for Multiple-Beam Klystron (MBK) are concerned: the field distribution symmetry, the external Q-factor of operating mode, and the frequency interval between operating mode and neighb...
Three problems of the coaxial output cavity operating at TM310 mode for Multiple-Beam Klystron (MBK) are concerned: the field distribution symmetry, the external Q-factor of operating mode, and the frequency interval between operating mode and neighb...
2011, 33(8): 1988-1992.
doi: 10.3724/SP.J.1146.2010.01238
Abstract:
MIMO (Multiple-Input Multiple-Output) radar has evident advantages in target detection, parameter estimation, and so on. The Cramer-Rao Bound (CRB) for parameter estimation is proved to be a useful tool for characterizing system design and STAP perfo...
MIMO (Multiple-Input Multiple-Output) radar has evident advantages in target detection, parameter estimation, and so on. The Cramer-Rao Bound (CRB) for parameter estimation is proved to be a useful tool for characterizing system design and STAP perfo...
2011, 33(8): 1993-1997.
doi: 10.3724/SP.J.1146.2010.01294
Abstract:
The issue of Co-Channel Interference (CCI) in the Orthogonal Frequency Division Multiplexing (OFDM) systems is studied in this paper. A time-domain estimation and elimination scheme of sinusoidal-modeled CCI is proposed based on the Minimum Mean Squa...
The issue of Co-Channel Interference (CCI) in the Orthogonal Frequency Division Multiplexing (OFDM) systems is studied in this paper. A time-domain estimation and elimination scheme of sinusoidal-modeled CCI is proposed based on the Minimum Mean Squa...
2011, 33(8): 1998-2002.
doi: 10.3724/SP.J.1146.2010.01286
Abstract:
In the high-dimensional space, the classification hyperplane tends to pass through the origin and bias (b) is not need. To study whether -SVM for classification needs (b), dual optimization formulation of-SVM without (b) is proposed and the correspon...
In the high-dimensional space, the classification hyperplane tends to pass through the origin and bias (b) is not need. To study whether -SVM for classification needs (b), dual optimization formulation of-SVM without (b) is proposed and the correspon...
2011, 33(8): 2003-2007.
doi: 10.3724/SP.J.1146.2010.01417
Abstract:
The date rate to bandwidth ratio is one of the most important parameter of a communication system in band limited channels. For improving the date rate to bandwidth ratio of the nonsinusoidal orthogonal modulation system in time domain, a new efficie...
The date rate to bandwidth ratio is one of the most important parameter of a communication system in band limited channels. For improving the date rate to bandwidth ratio of the nonsinusoidal orthogonal modulation system in time domain, a new efficie...
2011, 33(8): 2008-2012.
doi: 10.3724/SP.J.1146.2010.01197
Abstract:
Base Station Cooperation (BSC) is considered as a promising way for Co-Channel Interference (CCI) mitigation and system capacity improvement in multicell OFDMA systems. How to allocate radio resource optimally to guarantee the quality of services is ...
Base Station Cooperation (BSC) is considered as a promising way for Co-Channel Interference (CCI) mitigation and system capacity improvement in multicell OFDMA systems. How to allocate radio resource optimally to guarantee the quality of services is ...
2011, 33(8): 2013-2017.
doi: 10.3724/SP.J.1146.2010.01270
Abstract:
Exploring a new routing control protocol is a hot spot in WSN research. A cluster-based Self-Adaptive Hybrid Routing Control (SAHRC) protocol for WSN in special application is proposed based on traditional LEACH protocol. It takes account of large-sc...
Exploring a new routing control protocol is a hot spot in WSN research. A cluster-based Self-Adaptive Hybrid Routing Control (SAHRC) protocol for WSN in special application is proposed based on traditional LEACH protocol. It takes account of large-sc...
2011, 33(8): 2018-2022.
doi: 10.3724/SP.J.1146.2010.01306
Abstract:
Considering the routing optimization issue in nested NEtwork MObility (NEMO), an adaptive routing optimization scheme based on cost function is proposed. In the scheme, depending on the communication and mobility pattern, the communication of nested ...
Considering the routing optimization issue in nested NEtwork MObility (NEMO), an adaptive routing optimization scheme based on cost function is proposed. In the scheme, depending on the communication and mobility pattern, the communication of nested ...
2011, 33(8): 2023-2027.
doi: 10.3724/SP.J.1146.2010.01347
Abstract:
Based on memory polynomial model, this paper proposes a new RF power amplifier predistortion linearization method using single feedback, which only needs the in-phase or quadrature component of the quadrature demodulated IQ signal, and it also can ac...
Based on memory polynomial model, this paper proposes a new RF power amplifier predistortion linearization method using single feedback, which only needs the in-phase or quadrature component of the quadrature demodulated IQ signal, and it also can ac...
2011, 33(8): 2028-2032.
doi: 10.3724/SP.J.1146.2010.01284
Abstract:
The development of a 16-channel electrophysiological signal detecting system based on the microelectrode array is described. The detecting system consists of hardware and software components, and the hardware can be divided into the following three m...
The development of a 16-channel electrophysiological signal detecting system based on the microelectrode array is described. The detecting system consists of hardware and software components, and the hardware can be divided into the following three m...
