Information–Theoretic Radar Waveform Design under the SINR Constraint
Autor: | Zhenghong Deng, Yu Xiao, Tao Wu |
---|---|
Rok vydání: | 2020 |
Předmět: |
Computer science
General Physics and Astronomy lcsh:Astrophysics 02 engineering and technology frequency domain Article law.invention waveform optimization 0203 mechanical engineering law lcsh:QB460-466 0202 electrical engineering electronic engineering information engineering SINR constraint Waveform Radar lcsh:Science Divergence (statistics) 020301 aerospace & aeronautics 020206 networking & telecommunications Mutual information information–theoretic energy allocation strategies lcsh:QC1-999 Constraint (information theory) Frequency domain Clutter lcsh:Q Algorithm lcsh:Physics Energy (signal processing) |
Zdroj: | Entropy, Vol 22, Iss 1182, p 1182 (2020) Entropy Volume 22 Issue 10 |
ISSN: | 1099-4300 |
DOI: | 10.3390/e22101182 |
Popis: | This study investigates the information&ndash theoretic waveform design problem to improve radar performance in the presence of signal-dependent clutter environments. The goal was to study the waveform energy allocation strategies and provide guidance for radar waveform design through the trade-off relationship between the information theory criterion and the signal-to-interference-plus-noise ratio (SINR) criterion. To this end, a model of the constraint relationship among the mutual information (MI), the Kullback&ndash Leibler divergence (KLD), and the SINR is established in the frequency domain. The effects of the SINR value range on maximizing the MI and KLD under the energy constraint are derived. Under the constraints of energy and the SINR, the optimal radar waveform method based on maximizing the MI is proposed for radar estimation, with another method based on maximizing the KLD proposed for radar detection. The maximum MI value range is bounded by SINR and the maximum KLD value range is between 0 and the Jenson&ndash Shannon divergence (J-divergence) value. Simulation results show that under the SINR constraint, the MI-based optimal signal waveform can make full use of the transmitted energy to target information extraction and put the signal energy in the frequency bin where the target spectrum is larger than the clutter spectrum. The KLD-based optimal signal waveform can therefore make full use of the transmitted energy to detect the target and put the signal energy in the frequency bin with the maximum target spectrum. |
Databáze: | OpenAIRE |
Externí odkaz: | |
Nepřihlášeným uživatelům se plný text nezobrazuje | K zobrazení výsledku je třeba se přihlásit. |