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| Content Provider | IET Digital Library |
|---|---|
| Author | Alimosaymer, Mostafa Mohseni, Reza |
| Abstract | In recent years, wavelet packet modulation-orthogonal frequency division multiplexing (WPM-OFDM) signals have been introduced for radar applications. These signals have some significant properties such as inherent high range resolution, high resistance of radar system against jamming reception and improved target detection performance in contrast with common traditional signals. However, there is no systematic method for designing WPM-OFDM signals to be used in radar applications. In the present study, the authors have started solving the problem of designing a WPM-OFDM radar signal under a criterion of minimising the least-squares error between designed and desired ambiguity functions. A thumbtack shape is assumed to be the ideal shape of the ambiguity function. In the following, an iterative algorithm is introduced to allocate a proper phase to the desired ambiguity function for obtaining better results. In this study, it is shown that this algorithm can reduce side-lobes, throughout the entire plane of the ambiguity function; therefore using the mentioned algorithm leads to having a desired signal for a radar application. Consequently, by extending the presented method, a pair of WPM-OFDM signals is simultaneously designed which obtain their cross ambiguity function to approximate a desired one under the criterion of least-squares. |
| Starting Page | 475 |
| Ending Page | 482 |
| Page Count | 8 |
| ISSN | 17519675 |
| Volume Number | 8 |
| e-ISSN | 17519683 |
| Issue Number | Issue 5, Jul (2014) |
| Alternate Webpage(s) | https://digital-library.theiet.org/content/journals/iet-spr/8/5 |
| Alternate Webpage(s) | https://digital-library.theiet.org/content/journals/10.1049/iet-spr.2013.0228 |
| Journal | IET Signal Processing |
| Publisher Date | 2013-12-02 |
| Access Restriction | Open |
| Rights Holder | © The Institution of Engineering and Technology |
| Subject Keyword | Ambiguity Function Shape High-range Resolution Improved Target Detection Performance Interpolation And Function Approximation Iterative Algorithm Iterative Method Jamming Jamming Reception Least Squares Approximation Least-square Criterion Least-square Error Minimisation Modulation And Coding Method Numerical Analysis OFDM Modulation Radar Detection Radar Equipment Radar Resolution Radar System Optimal Aspect Radar System Resistance Side-lobe Reduction Signal Detection System And Application Systematic Approach Thumbtack Shape Wavelet Packet Modulation-orthogonal Frequency Division Multiplexing Radar Signal WPM-OFDM Signal Design |
| Content Type | Text |
| Resource Type | Article |
| Subject | Signal Processing Electrical and Electronic Engineering |
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