원문정보
초록
영어
A novel model of stochastic chaotic radar waveform with stochastically stepped carrier frequencies is proposed, in which, a nonlinear system generating an unpredictable aperiodic stochastic chaotic signal (SCS) is used to control stepping of carrier frequencies. The stochastic chaotic frequency-modulation (SCFM) signal is used as the baseband noise signal, which is truly random and has a thumbtack ambiguity function (AF). SCS can be used to estimate velocity and for imaging of high-speed targets. Wideband signal is obtained by coherently synthesizing for high-resolution range (HRR) imaging. Finally, numerical simulations show the effectiveness of the proposed signal model and corresponding algorithms.
목차
Abstract
1. Introduction
2. Stochastic Chaotic Signal
3. Stochastic Chaotic Signals with Randomly Stepped Carrier Frequencies
3.1. Baseband SCFM Signal
3.2. Frequency-Hopping Code
3.3. Transmitted Signal
3.4. Received Signal
4. Velocity Estimation and Bandwidth Synthesis
4.1. Subpulse Compression and Velocity Estimation
4.2. Coherent Bandwidth Synthesis
5. Numerical Simulation and Discussion
6. Conclusion
References
1. Introduction
2. Stochastic Chaotic Signal
3. Stochastic Chaotic Signals with Randomly Stepped Carrier Frequencies
3.1. Baseband SCFM Signal
3.2. Frequency-Hopping Code
3.3. Transmitted Signal
3.4. Received Signal
4. Velocity Estimation and Bandwidth Synthesis
4.1. Subpulse Compression and Velocity Estimation
4.2. Coherent Bandwidth Synthesis
5. Numerical Simulation and Discussion
6. Conclusion
References