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检索条件"任意字段=IEEE International Conference on Signal Processing, Communications and Computing ICSPCC 2015"

共 1362 条记录，以下是21-30 订阅

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An underwater acoustic signal processing method based on FPGA and optical fibre 7

An underwater acoustic signal processing method based on FPG...

引用

ieee international conference on signal processing, communications and computing (icspcc)

作者： Qiu Qianbao Liu Shen Kunming Shipborne Equipment Res & Test Ctr Kunming Yunnan Peoples R China

ISBN: (纸本)9781538631423

In the field of underwater acoustic communication, because of the signal transmission distance is shorter, generally uses the copper cable transmission. When the signal is needed to be transmitted in a long distance, its anti interference and attenuation will seriously affect the reliability of the transmission. Optical fiber transmits in higher speed and stronger anti jamming. Its application is more and more widely in the field of communications. FPGA using is flexible and efficient. And Use the IP core design more simple and efficient. Use of optical fiber and the FPGA can solve the problem of signal transmission and data processing speed. When multiple nodes are connected in series, it can better play the advantages of short delay and large data traffic.

关键词： optical fibre transmission FPGA NCO underwater acoustic signal processing

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Study on Phase Calibration signal processing

Study on Phase Calibration Signal Processing

引用

ieee international conference on signal processing, communications and computing (icspcc)

作者： Jiao Yiwen Kun, Jiang Xin, Lian Ke, Xu Equipment Acad Beijing Peoples R China

ISBN: (纸本)9781479952748

The traditional method for the extraction of phase calibration (PCAL) signal is inefficient when the number of PCAL tone is large. According to the special spectrum of the PCAL signal, an efficient method based on DFT is proposed for the multi-tones extraction. All the phases of the multi PCAL tones can be obtained in once DFT. The computation amount of the new method doesn't increase with the number of PCAL tones. Compared with the traditional correlation method, the new method is superior when the tone' number is larger than seven. Field experiment is conducted to verify the new method.

关键词： phase calibration phase extraction DFT

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Wideband signal Direction-of-Arrival Estimation by Using Steered Adaptive Array Technique 8

Wideband Signal Direction-of-Arrival Estimation by Using Ste...

引用

ieee international conference on signal processing, communications and computing (icspcc)

作者： Yin, Bingjie Kunming Shipborne Equipment Res & Test Ctr Kunming Yunnan Peoples R China

ISBN: (纸本)9781538679463

By using steered adaptive techniques, this paper proposes a wideband source signal direction-of-arrival (DOA) estimation method based on one stretched acoustic vector sensor, which provides an angular super-resolution estimation of uncorrelated polarized sources simultaneously. The antenna beam is scanned over the direction of interest, and the adaptive estimator will reach its steady state such as forming peaks in the signal DOAs. Beyond that, it also can improve the performance of the high-resolution azimuth estimation. Simulation results are included to validate its effectiveness and validness.

关键词： Vector signal processing direction-of-arrival estimation wideband signal adaptive beamforming

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The Decomposition Algorithm of Hankel Tensors 8

The Decomposition Algorithm of Hankel Tensors

引用

ieee international conference on signal processing, communications and computing (icspcc)

作者： Zhu Wenhuan Wen Jie Nanjing Univ Aeronaut & Astronaut Coll Sci Nanjing Jiangsu Peoples R China

ISBN: (纸本)9781538679463

Many signals in the real word can be represented as a sum of sinusoids with exponential damping. Considering the Hankel tensor special structure problem, this article discusses an algorithm that can compute the decomposition expression and the rank of the Hankel tensor. For a given n-dimensional Hankel tensor with order in, the Vandermonde rank of Hankel tensor is calculated by iterative method. Then the generating polynomials are constructed, and the decomposition can he determined by solving the generating polynomials, which satisfy a specific condition. The efficiency and accuracy of proposed method can be demonstrated through numerical examples.

关键词： signal processing Hankel Tensor Tensor Decomposition Generating Polynomials

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Simulation on Multichannel Navigation Satellite Reflected signal Detection Algorithm Based on Uniform Plane Array Digital Beamforming 7

Simulation on Multichannel Navigation Satellite Reflected Si...

引用

ieee international conference on signal processing, communications and computing (icspcc)

作者： Qu Wei Zhu Weigang Ran Da Acad Equipment Command & Technol Beijing Peoples R China

ISBN: (纸本)9781538631423

Passive radar systems based on navigation satellite reflected signal achieve the target detection and location by receiving and processing very weak Globe Navigation Satellite System (GNSS) reflected signal efficiently. During the multi-channel signal processing of navigation satellite reflected signals, digital beamforming (DBF) has been introduced to form automatically array antenna beam pointing to optimize navigation satellite receiving reflected signals. Finally, simulations have been on the results and performance of the detection algorithm simulation, the results show that the algorithm is efficient enough to achieve the goal of detecting the weak reflected signal.

关键词： Digital Beamforming Array signal Weak signal Detection

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Improved Accuracy of Estimated Covariance Matrix With A Novel Approach Based on STAP

Improved Accuracy of Estimated Covariance Matrix With A Nove...

引用

ieee international conference on signal processing, communications and computing (icspcc)

作者： Tao Fuyu Wang Tong Wu Jianxin Li Bowen Xidian Univ Natl Lab Radar Signal Proc Xian Peoples R China

ISBN: (纸本)9781509027088

The performance of space-time adaptive processing (STAP) will suffer severe degradation when the training data is contaminated by certain part of potential desired signal component, especially in the condition of the power of the targetlike signal spills over the range gate due to the effect of the pulse-compression. To overcome this problem, a novel target-like signal reconstruction method depending on the estimation of the amplitude and phase of the target-like signal from the receiving signal containing clutter and noise components is proposed. Consequently a set of purer signals is achieved as the training samples to estimate the clutter and noise covariance matrix of the cell under test (CUT) and the terrible target processing output of the conventional algorithm is modified, leading to a better performance of STAP. Theoretical analysis and simulation results proved the effectiveness of our suggested method.

关键词： STAP target-like signal covariance matrix heterogeneous environment training samples

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Bi-channel PAL Sync signal Switcher Based on CPLD 5

Bi-channel PAL Sync Signal Switcher Based on CPLD

引用

ieee international conference on signal processing, communications and computing icspcc 2015

作者： Li, Aiguo Zhang, Chaoyang Xian Univ Sci & Technol Coll Comp Sci & Technol Xian 710054 Shaanxi Peoples R China

ISBN: (纸本)9781479989201

The normal display of the video signal depends on the video sync signal. In the pragmatic applications, failing to display of the video signal usually subjects to the loss of the sync signal, and affects the regular production. And the excessive long transmission lines debilitate the video sync signals, which results in the video signal displaying abnormally. Bi-channel PAL sync signal switcher discussed in this paper is based on Complex Programmable Logic Devices (CPLD) and generates PAL timing by CPLD programming. It is used to solve the problem that the video is unable to display for the loss of video sync signal. Meanwhile, the three-state gates are used to overcome the weakness of the load driving ability.

关键词： PAL CPLD ideo sync signal three-state gate load driving

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On equivalence of 1 norm based basic sparse representation problems 5

On equivalence of 1 norm based basic sparse representation p...

引用

5th ieee international conference on signal processing, communications and computing, icspcc 2015

作者： Rui, Jiang Hong, Qiao Bo, Zhang Institute of Automation CAS Beijing China LSEC and Institute of Applied Mathematics AMSS CAS Beijing China

ISBN: (纸本)9781479989188

The 1 norm regularization problem, the 1 norm minimization problem and the 1 norm constraint problem are known collectively as the 1 norm based Basic Sparse Representation Problems (BSRPs), and have been popular basic models in the field of signal processing and machine learning. The equivalence of the above three problems is one of the crucial bases for the corresponding algorithms design. However, to the best our knowledge, this equivalence issue has not been addressed appropriately in the existing literature. In this paper, we will give a rigorous proof of the equivalence of the three 1 norm based BSRPs in the case when the dictionary is an overcomplete and row full rank matrix. © 2015 ieee.

关键词： signal processing

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A High-precision Underwater Acoustic Communication signal Modeling Method Based on VirTEX Algorithm 8

A High-precision Underwater Acoustic Communication Signal Mo...

引用

ieee international conference on signal processing, communications and computing (icspcc)

作者： Wang, Chao Xiong, Shengjun Hangzhou Appl Acoust Res Inst Natl Key Lab Sci & Technol Sonar Hangzhou Zhejiang Peoples R China

ISBN: (纸本)9781538679463

Dopplershift has important influence on the performance of underwater acoustic communication system. When constructing a received signal, it is usually set that the Doppler shift is a fixed value, which inevitably causes the distortion of the simulation signal. The VirTEX algorithm considers the difference of Doppler shifts of different paths from the ray theory analysis. However, this method cannot guarantee data continuity and cannot be applied to real-time simulation system. This paper proposes a dynamic channel received signal modeling method based on VirTEX algorithm. It not only considers the Doppler variability of different paths, but also considers the problem of data continuity in real-time systems. Simulation results verify the effectiveness of this method.

关键词： Doppler Shifting VirTEX algorithm real-time simulation system continuity

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Navigation Data Bit Decoding of Weak GNSS signal 8

Navigation Data Bit Decoding of Weak GNSS Signal

引用

ieee international conference on signal processing, communications and computing (icspcc)

作者： Zhang, Hailong Liu, Xuan China Elect Power Res Inst Metering Dept Beijing Peoples R China

ISBN: (纸本)9781538679463

The predominant technique to improve the receiver's sensitivity is extending integration time coherently. However, data modulation limits the integration time, which is up to data bit period. Maximum likelihood(ML) estimation method is a common way to estimate the data bits. But the ML algorithm is sensitive to Doppler error and has heavy computation load, which depend on the decoding block length. In this paper, a differential detection method is proposed for data bit decoding. Differential decoding has merit of low computation complexity and fitting for long integration time. The simulation results show the robustness to Doppler error of differential decoding algorithm.

关键词： GNSS receiver Weak signal GPS/BDS High sensitivity Extended coherent integration Bit decoding

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