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2015 Vol. 37, No. 6
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2015, 37(6): 1271-1278.
doi: 10.11999/JEIT141259
Abstract:
In the resource-constrained intermittent connectivity Ad-hoc networks, the wireless media is shared by collaborated nodes for message forwarding, and the confidentiality of messages is particularly vulnerable. To protect the confidentiality of the me...
In the resource-constrained intermittent connectivity Ad-hoc networks, the wireless media is shared by collaborated nodes for message forwarding, and the confidentiality of messages is particularly vulnerable. To protect the confidentiality of the me...
2015, 37(6): 1279-1284.
doi: 10.11999/JEIT141303
Abstract:
The features of autonomy, anonymity and distribution make the P2P system vulnerable to malicious attack and abuse. A feasible resolution in such an open environment is to exploit a community-based trust model to build trust relationship between peers...
The features of autonomy, anonymity and distribution make the P2P system vulnerable to malicious attack and abuse. A feasible resolution in such an open environment is to exploit a community-based trust model to build trust relationship between peers...
2015, 37(6): 1285-1290.
doi: 10.11999/JEIT140995
Abstract:
In the Delay Tolerant Networks (DTNs), in order to discover the neighbors, the nodes in the network have to probe the surrounding environment continually. This can be an extremely energy-consuming process. If the nodes probe very frequently, they con...
In the Delay Tolerant Networks (DTNs), in order to discover the neighbors, the nodes in the network have to probe the surrounding environment continually. This can be an extremely energy-consuming process. If the nodes probe very frequently, they con...
2015, 37(6): 1291-1297.
doi: 10.11999/JEIT141182
Abstract:
To deal with the limitation that flat routing can hardly be accustomed to large scale Underwater Sensor Networks (USN), a new clustering routing algorithm Dynamic Layered Clustering Routing (DLCR) is proposed, which can be accustomed to larger scale ...
To deal with the limitation that flat routing can hardly be accustomed to large scale Underwater Sensor Networks (USN), a new clustering routing algorithm Dynamic Layered Clustering Routing (DLCR) is proposed, which can be accustomed to larger scale ...
2015, 37(6): 1298-1303.
doi: 10.11999/JEIT141158
Abstract:
Aimed at the problem of downlink multiservice adaptive scheduling in Orthogonal Frequency-Division Multiple Access (OFDMA) system, a universal model for multiservice adaptive resource allocation is built, which is to maximize system throughput, under...
Aimed at the problem of downlink multiservice adaptive scheduling in Orthogonal Frequency-Division Multiple Access (OFDMA) system, a universal model for multiservice adaptive resource allocation is built, which is to maximize system throughput, under...
2015, 37(6): 1304-1309.
doi: 10.11999/JEIT141340
Abstract:
In the dense distribution environment, the Ultra-High Frequency Radio-Frequency IDentification (UHF RFID) tags are interfered by the mutual impedance of adjacent tags, which can lead to a decline in reading rate. Based on the two-port network and Yag...
In the dense distribution environment, the Ultra-High Frequency Radio-Frequency IDentification (UHF RFID) tags are interfered by the mutual impedance of adjacent tags, which can lead to a decline in reading rate. Based on the two-port network and Yag...
2015, 37(6): 1310-1316.
doi: 10.11999/JEIT141037
Abstract:
RaptorQ code is a novel and efficient digital fountain code and its decoder is known to be too complicated. Considering the characteristic of the systematic code, a very fast decoding algorithm can be performed using matrix dimensionality reduction. ...
RaptorQ code is a novel and efficient digital fountain code and its decoder is known to be too complicated. Considering the characteristic of the systematic code, a very fast decoding algorithm can be performed using matrix dimensionality reduction. ...
Research on the Blocked Ordered Vandermonde Matrix Used as Measurement Matrix for Compressed Sensing
2015, 37(6): 1317-1322.
doi: 10.11999/JEIT140860
Abstract:
The measurement matrix is an important part of Compressed Sensing (CS). Although the deterministic matrix is easy to implement by the hardware, it performs not so well as a random matrix in the signal reconstruction. To solve this problem, a new dete...
The measurement matrix is an important part of Compressed Sensing (CS). Although the deterministic matrix is easy to implement by the hardware, it performs not so well as a random matrix in the signal reconstruction. To solve this problem, a new dete...
Cauchy Distribution Based Maximum-likelihood Estimator for Symbol Rate of Phase Shift Keying Signals
2015, 37(6): 1323-1329.
doi: 10.11999/JEIT141180
Abstract:
In order to solve the problem that the performance of existing algorithms for the symbol rate estimation of Phase Shift Keying (PSK) signals will significantly degrade in the Alpha stable noise environment, a novel Cauchy distribution based Maximum-L...
In order to solve the problem that the performance of existing algorithms for the symbol rate estimation of Phase Shift Keying (PSK) signals will significantly degrade in the Alpha stable noise environment, a novel Cauchy distribution based Maximum-L...
2015, 37(6): 1330-1335.
doi: 10.11999/JEIT141605
Abstract:
To solve a class of nonlinear signal denoising, an effective iteration method based on the Singular Value Decomposition (SVD) is proposed. When the signals have no obvious characteristic frequency and non-periodic change, the current difference spect...
To solve a class of nonlinear signal denoising, an effective iteration method based on the Singular Value Decomposition (SVD) is proposed. When the signals have no obvious characteristic frequency and non-periodic change, the current difference spect...
2015, 37(6): 1336-1342.
doi: 10.11999/JEIT141113
Abstract:
A number of measurement-conversion techniques, which are based on position measurements, are widely used in tracking applications, so that the Kalman filter can be applied to the Cartesian coordinates. However, they have fundamental limitations resul...
A number of measurement-conversion techniques, which are based on position measurements, are widely used in tracking applications, so that the Kalman filter can be applied to the Cartesian coordinates. However, they have fundamental limitations resul...
2015, 37(6): 1343-1349.
doi: 10.11999/JEIT141122
Abstract:
Traditional Voice Activity Detection (VAD) approaches can not effectively detect consonant as well as noisy unvoiced consonant. To address this problem, this paper proposes a VAD approach Mel Frequency Cepstrum Coefficient (F-MFCC) based on Fisher li...
Traditional Voice Activity Detection (VAD) approaches can not effectively detect consonant as well as noisy unvoiced consonant. To address this problem, this paper proposes a VAD approach Mel Frequency Cepstrum Coefficient (F-MFCC) based on Fisher li...
2015, 37(6): 1350-1356.
doi: 10.11999/JEIT141264
Abstract:
The eigenphone speaker adaptation method performs well when the amount of adaptation data is sufficient. However, it suffers from severe over-fitting when insufficient amount of adaptation data is provided. A speaker adaptation method based on eigenp...
The eigenphone speaker adaptation method performs well when the amount of adaptation data is sufficient. However, it suffers from severe over-fitting when insufficient amount of adaptation data is provided. A speaker adaptation method based on eigenp...
2015, 37(6): 1357-1364.
doi: 10.11999/JEIT141134
Abstract:
In order to solve the problems of appearance change, background distraction and occlusion in the object tracking, an efficient algorithm for visual tracking based on the local patch model and model update is proposed. This paper combines rough-search...
In order to solve the problems of appearance change, background distraction and occlusion in the object tracking, an efficient algorithm for visual tracking based on the local patch model and model update is proposed. This paper combines rough-search...
2015, 37(6): 1365-1371.
doi: 10.11999/JEIT140960
Abstract:
This paper proposes a novel shape representation method based on statistical features. According to the joint analysis on Centroid-Contour Distance (CCD) and chaincode, the silhouette is decomposed into several levels based on CCD. And then, the chai...
This paper proposes a novel shape representation method based on statistical features. According to the joint analysis on Centroid-Contour Distance (CCD) and chaincode, the silhouette is decomposed into several levels based on CCD. And then, the chai...
2015, 37(6): 1372-1377.
doi: 10.11999/JEIT141093
Abstract:
To overcome the curse of dimensionality caused by vectorization of image matrices, and to increase robustness to outliers, L1-norm based Two-Dimensional Linear Discriminant Analysis (2DLDA-L1) is proposed for dimensionality reduction. It makes full u...
To overcome the curse of dimensionality caused by vectorization of image matrices, and to increase robustness to outliers, L1-norm based Two-Dimensional Linear Discriminant Analysis (2DLDA-L1) is proposed for dimensionality reduction. It makes full u...
2015, 37(6): 1378-1383.
doi: 10.11999/JEIT141241
Abstract:
It is well-known that restricts on weight and volume of spaceborne sensing instruments are strict. Single tripole antenna usually needs one three-channel receiver to estimate the parameters of electromagnetic waves. When the weight of the receiver is...
It is well-known that restricts on weight and volume of spaceborne sensing instruments are strict. Single tripole antenna usually needs one three-channel receiver to estimate the parameters of electromagnetic waves. When the weight of the receiver is...
2015, 37(6): 1384-1388.
doi: 10.11999/JEIT141390
Abstract:
The measurement of blood-oxygen saturation is based on the pulse wave signal, but there are many factors impact the accuracy of measurement, such as high frequency noise caused by instrument thermal noise and baseline drift caused by the breath. A me...
The measurement of blood-oxygen saturation is based on the pulse wave signal, but there are many factors impact the accuracy of measurement, such as high frequency noise caused by instrument thermal noise and baseline drift caused by the breath. A me...
2015, 37(6): 1389-1394.
doi: 10.11999/JEIT141254
Abstract:
Compared with the Back Projection Algorithm (BPA), the interpolation load of the Fast Factorized Back Projection Algorithm (FFBPA) is released. However, the 2D interpolation in the image domain is essential for the FFBPA and the intensive computation...
Compared with the Back Projection Algorithm (BPA), the interpolation load of the Fast Factorized Back Projection Algorithm (FFBPA) is released. However, the 2D interpolation in the image domain is essential for the FFBPA and the intensive computation...
2015, 37(6): 1395-1401.
doi: 10.11999/JEIT140900
Abstract:
In nonhomogeneous sea clutter, abnormal cells included reference cells constrain the performance of the Sample Covariance Matrix (SCM), and then influence the detection performance of the traditional Adaptive Matched Filter (AMF) detector, while cens...
In nonhomogeneous sea clutter, abnormal cells included reference cells constrain the performance of the Sample Covariance Matrix (SCM), and then influence the detection performance of the traditional Adaptive Matched Filter (AMF) detector, while cens...
2015, 37(6): 1402-1408.
doi: 10.11999/JEIT141012
Abstract:
Smart use of prior information is one of effective approaches to improve the performance of Bayesian estimator. At the design stage of Bayesian estimator, the prior model parameters must be specified, but these parameters may not be identical with pa...
Smart use of prior information is one of effective approaches to improve the performance of Bayesian estimator. At the design stage of Bayesian estimator, the prior model parameters must be specified, but these parameters may not be identical with pa...
2015, 37(6): 1409-1415.
doi: 10.11999/JEIT141131
Abstract:
Equipped with an airborne spotlight SAR, inertia navigation system can not measure the motion errors with the required accuracy for high resolution SAR imaging, which may degrade severely the quality of a SAR image. In this paper, a novel autofocus a...
Equipped with an airborne spotlight SAR, inertia navigation system can not measure the motion errors with the required accuracy for high resolution SAR imaging, which may degrade severely the quality of a SAR image. In this paper, a novel autofocus a...
2015, 37(6): 1416-1423.
doi: 10.11999/JEIT141179
Abstract:
In the scenario of multiple targets and multiple tasks, radar should have multiple functions to realize different modes, such as search and tracking. Traditional radar can only implement one function and the working mode is not flexible, which may re...
In the scenario of multiple targets and multiple tasks, radar should have multiple functions to realize different modes, such as search and tracking. Traditional radar can only implement one function and the working mode is not flexible, which may re...
2015, 37(6): 1424-1430.
doi: 10.11999/JEIT141106
Abstract:
The array antenna SAR is able to realize the three dimensional imaging. In order to improve the imaging quality, the measurement equipment is adopted to acquire the motion information of the array antennas platform for the motion compensation. Howeve...
The array antenna SAR is able to realize the three dimensional imaging. In order to improve the imaging quality, the measurement equipment is adopted to acquire the motion information of the array antennas platform for the motion compensation. Howeve...
2015, 37(6): 1431-1436.
doi: 10.11999/JEIT141079
Abstract:
This paper addresses the simultaneous optimization problem of the multi-objective waveform design for MIMO radar with collocated antennas. Inspired from the idea of alternating projection, a waveform design framework is presented based on the Arbitra...
This paper addresses the simultaneous optimization problem of the multi-objective waveform design for MIMO radar with collocated antennas. Inspired from the idea of alternating projection, a waveform design framework is presented based on the Arbitra...
2015, 37(6): 1437-1442.
doi: 10.11999/JEIT141234
Abstract:
A new approach is proposed to compute spaceborne SAR range ambiguity using covariance matrix. The causation of range ambiguity of spaceborne SAR and the ambiguous energy difference between like-polarized channel and cross-polarized channel are analyz...
A new approach is proposed to compute spaceborne SAR range ambiguity using covariance matrix. The causation of range ambiguity of spaceborne SAR and the ambiguous energy difference between like-polarized channel and cross-polarized channel are analyz...
2015, 37(6): 1443-1449.
doi: 10.11999/JEIT140948
Abstract:
The ionospheric scintillation can destroy the coherence of SAR echos, and correspondingly degrade SAR imaging performance. The previous studies are conducted under the hypothesis of the given ionospheric electron density irregularities, which are una...
The ionospheric scintillation can destroy the coherence of SAR echos, and correspondingly degrade SAR imaging performance. The previous studies are conducted under the hypothesis of the given ionospheric electron density irregularities, which are una...
2015, 37(6): 1450-1456.
doi: 10.11999/JEIT141150
Abstract:
The scheme which is based on the Digital Delay Locked Loop (DDLL), Frequency Locked Loop (FLL), and Phase Locked Loop (PLL) is implemented in the microwave radar for spatial rendezvous and docking, and the delay, frequency and Direction Of Arrival (D...
The scheme which is based on the Digital Delay Locked Loop (DDLL), Frequency Locked Loop (FLL), and Phase Locked Loop (PLL) is implemented in the microwave radar for spatial rendezvous and docking, and the delay, frequency and Direction Of Arrival (D...
2015, 37(6): 1457-1462.
doi: 10.11999/JEIT141227
Abstract:
The sparse representation of signal via dictionary learning algorithms is widely used in signal processing field. Since there is redundancy in the new space defined by overcomplete dictionary atoms, the problem of finding sparse representations may b...
The sparse representation of signal via dictionary learning algorithms is widely used in signal processing field. Since there is redundancy in the new space defined by overcomplete dictionary atoms, the problem of finding sparse representations may b...
2015, 37(6): 1463-1469.
doi: 10.11999/JEIT141022
Abstract:
Since Interferometric Circular SAR (InCSAR) has the advantage of all-directional observation, a method for Digital Elevation Model (DEM) extraction based on InCSAR is proposed to ensure the high accuracy of the high resolution Circular SAR imaging. F...
Since Interferometric Circular SAR (InCSAR) has the advantage of all-directional observation, a method for Digital Elevation Model (DEM) extraction based on InCSAR is proposed to ensure the high accuracy of the high resolution Circular SAR imaging. F...
2015, 37(6): 1470-1475.
doi: 10.11999/JEIT141042
Abstract:
The distribution of a multiplier of 2-partitioned random multiplicative model is symmetric about 1/2, which makes the shape of multifractal function of the simulation data be fixed. Based on the analysis of the construction process of the 2-partition...
The distribution of a multiplier of 2-partitioned random multiplicative model is symmetric about 1/2, which makes the shape of multifractal function of the simulation data be fixed. Based on the analysis of the construction process of the 2-partition...
2015, 37(6): 1476-1482.
doi: 10.11999/JEIT141504
Abstract:
With development of anti-stealth technology, meter-wave radar comes into sight of scientific community again due to its natural superiority of anti-stealth and anti-radiation missile. But as strongly influenced by multi- path effect in process of det...
With development of anti-stealth technology, meter-wave radar comes into sight of scientific community again due to its natural superiority of anti-stealth and anti-radiation missile. But as strongly influenced by multi- path effect in process of det...
2015, 37(6): 1483-1489.
doi: 10.11999/JEIT140653
Abstract:
Through taking the Multi-Carrier Phase Coded (MCPC) signal as the subpulse, and replacing the linear frequency step with the Costas frequency hopping, a new Inter-Pulse Costas frequency hopping and intra-pulse Multi-Carrier Chaotic Phase Coded (denot...
Through taking the Multi-Carrier Phase Coded (MCPC) signal as the subpulse, and replacing the linear frequency step with the Costas frequency hopping, a new Inter-Pulse Costas frequency hopping and intra-pulse Multi-Carrier Chaotic Phase Coded (denot...
2015, 37(6): 1490-1494.
doi: 10.11999/JEIT141232
Abstract:
In order to take full advantage of Doppler information for Multi-Target Tracking (MTT) in the clutter environment under the framework of emerging Random Finite Sets (RFS), an MTT algorithm based on Gaussian Mixture Cardinalized Probability Hypothesis...
In order to take full advantage of Doppler information for Multi-Target Tracking (MTT) in the clutter environment under the framework of emerging Random Finite Sets (RFS), an MTT algorithm based on Gaussian Mixture Cardinalized Probability Hypothesis...
2015, 37(6): 1495-1501.
doi: 10.11999/JEIT141059
Abstract:
For Polarimetric SAR (PolSAR), because it contains more scattering information, thus it can provide more available features. How to use the features is crucial for the PolSAR image classification, however, there are no existing specific rules. To sol...
For Polarimetric SAR (PolSAR), because it contains more scattering information, thus it can provide more available features. How to use the features is crucial for the PolSAR image classification, however, there are no existing specific rules. To sol...
2015, 37(6): 1502-1506.
doi: 10.11999/JEIT141233
Abstract:
A computational method for the rotational loss in the troposcatter propagation is presented because the beams of transceivers antenna can not be along the circular path in trans-horizon passive detection. Because of the narrow beams of the transceive...
A computational method for the rotational loss in the troposcatter propagation is presented because the beams of transceivers antenna can not be along the circular path in trans-horizon passive detection. Because of the narrow beams of the transceive...
2015, 37(6): 1507-1512.
doi: 10.11999/JEIT141195
Abstract:
传统电波折射修正算法普遍采用大气球面分层假设，这类算法在修正高仰角测量目标时具有较好的修正精度，然而对于低仰角、远距离目标，修正精度还不高。该文提出一种折射修正算法，采用更精确的椭球面分层模型描述大气分布，利用迭代递推的方法计算修正后的目标位置，相比传统折射修正算法，计算量有所增加，但是提高了低仰角、远距离目标测量数据折射修正精度，可用于事后数据处理。
传统电波折射修正算法普遍采用大气球面分层假设，这类算法在修正高仰角测量目标时具有较好的修正精度，然而对于低仰角、远距离目标，修正精度还不高。该文提出一种折射修正算法，采用更精确的椭球面分层模型描述大气分布，利用迭代递推的方法计算修正后的目标位置，相比传统折射修正算法，计算量有所增加，但是提高了低仰角、远距离目标测量数据折射修正精度，可用于事后数据处理。
2015, 37(6): 1513-1519.
doi: 10.11999/JEIT141146
Abstract:
In order to reduce test data and test time, a test data compression method for multiple scan chain which bases on mirror-symmetrical reference slices is proposed. This method uses two mutually mirror-symmetrical reference slices for compatibility com...
In order to reduce test data and test time, a test data compression method for multiple scan chain which bases on mirror-symmetrical reference slices is proposed. This method uses two mutually mirror-symmetrical reference slices for compatibility com...
2015, 37(6): 1520-1524.
doi: 10.11999/JEIT141248
Abstract:
The registration of point clouds with high noises, outliers and missing data will be failure because the correspondence between point clouds is inaccurate. This paper proposes a information theory based point cloud registration method called KL-Reg a...
The registration of point clouds with high noises, outliers and missing data will be failure because the correspondence between point clouds is inaccurate. This paper proposes a information theory based point cloud registration method called KL-Reg a...
