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| Content Provider | IET Digital Library |
|---|---|
| Author | Chen, Xiaolong Guan, Jian He, You Zhang, Jian |
| Abstract | Effective detection of low observable moving target at sea is important for remote sensing and radar signal processing. The non-Gaussian property of sea clutter and lack of accurate model make the detection difficult for statistics based detectors. Also the fractal techniques in time domain cannot achieve high detection probability in heavy sea clutter. To help solve the problems, fractal characteristics of IPIX datasets in fractional Fourier transform (FRFT) domain are analysed making use of the fluctuation of FRFT amplitudes and moving target detection algorithms are proposed based on the fractal characteristics in FRFT domain. Firstly, fractal model in FRFT domain is established with fractional Brownian motion model and two judgment and extraction methods are employed for calculating the fractal characteristics in FRFT domain. It is found that sea clutter of different polarisations exhibit fractal behaviours in FRFT domain, that is, self-similarity property, within its corresponding scale-invariant interval. Then, we find that four specific fractal statistics in the best FRFT domain can provide valuable information for developing simple and effective detectors. Finally, traditional amplitude detector and Hurst exponent detector in time domain are compared and the results prove the superior detection ability of low observable moving target without complex computations. |
| Starting Page | 635 |
| Ending Page | 651 |
| Page Count | 17 |
| ISSN | 17518784 |
| Volume Number | 7 |
| e-ISSN | 17518792 |
| Issue Number | Issue 6, Jul (2013) |
| Alternate Webpage(s) | https://digital-library.theiet.org/content/journals/iet-rsn/7/6 |
| Alternate Webpage(s) | https://digital-library.theiet.org/content/journals/10.1049/iet-rsn.2012.0116 |
| Journal | IET Radar, Sonar & Navigation |
| Access Restriction | Open |
| Rights Holder | © The Institution of Engineering and Technology |
| Subject Keyword | Brownian Motion Curve Fitting FD Variance Fourier Transforms Fractal Characteristic Fractal Curve Fractal Dimension Fractal Fitting Error Fractal Statistics Fractals Fractional Brownian Motion Model Fractional Fourier Transform FRFT Domain Function Theory And Analysis Geophysical Technique And Equipment Instrumentation And Technique For Geophysical, Hydrospheric And Lower Atmosphere Research Integral Transforms Intelligent Pixel Sea Clutter Data Interpolation And Function Approximation Marine Radar NonGaussian Characteristic Numerical Analysis Numerical Approximation And Analysis Object Detection Observable Moving Target Detection Probability Theory Radar Clutter Radar Detection Radar Equipment Radar Signal Processing Remote Sensing Remote Sensing by Radar Scale Invariant Interval Sea Clutter Self-similarity Property Signal Detection Statistical Analysis Statistics Statistics Based Detector Stochastic Linearised SCUC System And Application |
| Content Type | Text |
| Resource Type | Article |
| Subject | Electrical and Electronic Engineering |
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