Extinction ratio is one of important parameters which are characterization of optical properties of Glan-Taylor prism (GTP) .In this paper, we adopt the ray tracing method to deduce the extinction ratio expression of the GTP. By performing the computer simulation, some important relationship curves are obtained as the variations of the extinction ratio on optical axes and the structural angle, the work has great guiding significance in the design and use of Glan-Taylor prism.
Intra-pulse analysis plays an important role in electronic warfare. Intra-pulse feature abstraction focuses on primary parameters such as instantaneous frequency, modulation, and symbol rate. In this paper, automatic modulation recognition and feature extraction for combined BPSK-LFM modulation signals based on decision theoretic approach is studied. The simulation results show good recognition effect and high estimation precision, and the system is easy to be realized.
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