{'fraction_non_alphanumeric': 0.016352201257861635, 'fraction_numerical': 0.0, 'mean_word_length': 5.170542635658915, 'pattern_counts': {'":': 0, '<': 0, '<?xml version=': 0, '>': 0, 'https://': 0, 'lorem ipsum': 0, 'www.': 0, 'xml': 0}, 'pii_count': 0, 'substrings_counts': 0, 'word_list_counts': {'cursed_substrings.json': 0, 'profanity_word_list.json': 0, 'sexual_word_list.json': 0, 'zh_pornsignals.json': 0}}
Submarine echo simulation method based on the highlight model

In this paper we have proposed a new highlight model for submarine echo simulation. According to the shape of the submarine, which is divided into three highlights, and the equivalent sheltered area of the submarine highlights is calculated using equivalent area method. Submarine target echo signal is using trapezoid pulse signal as torpedo active acoustic signal. Simulation results show that results are consistent with the basic theory of the target echo, and verify the validity of the method. In order to simplify the problem, the simulation method ignores secondary factor, and calculate the shelter problem based on optical principles, the results obtained are general, and it can meet the purpose of real-time requirement.