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In the sea test range, the accurate measurement of the landing point of weapons and equipment is the key issue to assess the strike accuracy. In order to improve the accuracy measurement of the landing point of weapons, this paper studies the long baseline (TDOA) landing point target positioning technology, and analyzes the positioning accuracy and simulates the location of the landing point target based on the landing point measurement scenario. The design index of the actual test verification system in the deep sea area of the South China Sea is analyzed, and the test results prove that the system can dis- play the position of the falling target in real time and has relatively high precision positioning results, which provides technical support for the accuracy measurement of the falling point of weapons and equipment. [ABSTRACT FROM AUTHOR]

Chinese culture continues to influence the world. As one of the important carriers of cultural communication film and television dramas carry rich historical and cultural information. With historical culture exquisite costume design and gripping drama stories ancient costume film and television dramas have deeply attracted the audience and aroused strong resonance. Meanwhile the rapid development of technologies such as artificial intelligence has continuously impacted the design and cultural fields and has put forward higher requirements for the development and research of related industries. How to adapt to the development trend of the times strengthen the dissemination of traditional culture and achieve industrial transformation is a difficult problem that the Chinese ancient costume film and television drama clothing industry has to face at this stage. This paper selects big data analysis methods uses CONCOR analysis and LDA topic modeling and conducts research from two levels research hotspots and industry development trends. In order to use objective experimental results from the two levels of research and industry the paper analyzes the hot topics related to Chinese ancient costume film and television drama clothing further revealing the future development trend of Chinese ancient costume film and television drama clothing industry and providing objective literature reference for enterprises and related researchers. Research hotspot data were collected by using CNKI database as the data source of literature ' film and television costumes were selected as the search keyword to collect nine research documents in the field of Chinese ancient costume film and television costumes in the past five years and the research content was examined. Social opinion hotspot research data were collected by using TEXTOM-v5. 5 program and with ' Chinese ancient costume film and television costumes as the keyword relevant websites posts public accounts news and other data released by Chinese social media platforms were collected in the past three years from May 24 2021 to May 23 2024. Research results show that in the past five years related research has mainly focused on four aspects design concepts and aesthetic pursuits the dissemination and promotion of traditional clothing culture the development requirements of costume design for ancient costume film and television dramas and the shaping and performance of roles. In terms of industry development trends with the further advancement of the national cultural communication strategy the future Chinese ancient costume film and television costume industry will usher in new trends such as digital development new trends in cross-industry linkage industrial transformation new opportunities for cultural communication and brand building and new design requirements that focus on tradition and innovation. This study hopes to provide useful empirical data for related research and industries in the field of costumes for Chinese ancient film and television dramas. However in the process of collating and confirming a large amount of data it takes considerable time and effort so there are limitations in improving research efficiency. [ABSTRACT FROM AUTHOR]

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