Performance analysis of estimation methods for incoherently distributed source number

2002 ◽  
Author(s):  
Jooshik Lee ◽  
Iickho Song ◽  
Hyungmoon Kwon ◽  
Sung Ro Lee
Keyword(s):  
Performance Analysis ◽  
Estimation Methods ◽  
Distributed Source ◽  
Incoherently Distributed Source ◽  
Source Number

scholarly journals Detection of Wideband Signal Number Based on Bootstrap Resampling

2016 ◽  
Vol 2016 ◽  
pp. 1-8 ◽  
Author(s):  
Jiaqi Zhen
Keyword(s):  
Signal To Noise Ratio ◽  
Spatial Spectrum ◽  
Estimation Methods ◽  
Single Frequency ◽  
Bootstrap Resampling ◽  
Spectrum Estimation ◽  
Wideband Signals ◽  
Vector Sequences ◽  
Spatial Spectrum Estimation ◽  
Source Number

Knowing source number correctly is the precondition for most spatial spectrum estimation methods; however, many snapshots are needed when we determine number of wideband signals. Therefore, a new method based on Bootstrap resampling is proposed in this paper. First, signals are divided into some nonoverlapping subbands; apply coherent signal methods (CSM) to focus them on the single frequency. Then, fuse the eigenvalues with the corresponding eigenvectors of the focused covariance matrix. Subsequently, use Bootstrap to construct the new resampling matrix. Finally, the number of wideband signals can be calculated with obtained vector sequences according to clustering technique. The method has a high probability of success under low signal to noise ratio (SNR) and small number of snapshots.

Noise-Modulated Correlation Measuring and Performance Analysis

2014 ◽  
Vol 1030-1032 ◽  
pp. 1741-1744
Author(s):  
Cheng Hong Zhou ◽  
Wei Ping Qian ◽  
Hua Zhao ◽  
Jun Hai Guo
Keyword(s):  
Performance Analysis ◽  
Electromagnetic Waves ◽  
Estimation Methods ◽  
Motion Information ◽  
Process Noise ◽  
Signal Noise ◽  
Noise Radar ◽  
Continuous Waves ◽  
Modulation Signal ◽  
And Performance

Radar obtains motion information of target from received modulated electromagnetic waves, which is usually periodical pulses or continuous waves. In this process, noise will affect the detection performance. However, as a modulated transmitting signal, noise has incomparable advantages over traditional radar. In this article, the mechanism of noise as modulation signal is introduced, and subsequently focused on the principles of distance ranging the corresponding estimation methods are proposed. Besides, the interference resistance characters of noise radar is verified by simulation.

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