{'fraction_non_alphanumeric': 0.024113475177304965, 'fraction_numerical': 0.0, 'mean_word_length': 5.477064220183486, '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}}
Source localization using TDOA measurements with sensor position errors

This paper proposes an improved two-step weighted least squares (TSWLS) algorithm for target location using time difference of arrival (TDOA) with sensor position errors. The performance of the TSWLS method is improved in a simple way through re-selecting reference sensor and rotating co-ordinate system, and the improved TSWLS(I-TSWLS) algorithm remains to be closed-form and approximately efficient as the TSWLS method. Simulation results show that the I-TSWLS algorithm can achieve the CRLB easily before higher noise threshold, and it exhibits lower estimation bias and better robustness with increasing sensor position errors.