{'fraction_non_alphanumeric': 0.025196850393700787, 'fraction_numerical': 0.0, 'mean_word_length': 4.94392523364486, '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}}
Target Feature Extraction in Narrowband Mode

Pole is an important feature of radar target recognition in resonance region, and it is not sensitive to attitude. However, the pole extraction requires time-domain late response or frequency-domain response (i.e. radar cross section, RCS) of the broadband signal, which is difficult to meet in the actual system. In this paper, a method of pole extraction based on sparse representation is proposed, which can obtain the pole characteristics of the target by fewer RCS in the narrowband mode. It is of great significance to the target classification and identification in resonant region.