運用流星尾訊號特性進行加碼模擬與分析;Simulation and Analysis of Coding Utilize the Characteristic of Meteor Tails Echos

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Title:	運用流星尾訊號特性進行加碼模擬與分析;Simulation and Analysis of Coding Utilize the Characteristic of Meteor Tails Echos
Authors:	劉得威;Liu, Te-Wei
Contributors:	資訊工程學系在職專班
Keywords:	流星尾;相位加碼;模糊函數;巴克碼;Meteor Tails;Phase Coding;Ambiguity Function;Barker Code
Date:	2024-01-24
Issue Date:	2024-03-05 17:44:09 (UTC+8)
Publisher:	國立中央大學
Abstract:	模糊函數為一種分析雷達信號的方法，其運用理論來分析雷達回波信號受時間延遲及都卜勒效應的影響。本研究首先利用流星觀測雷達系統[SKiYMET-GS meteor radar system]所接收到的回波資料進行分析，並運用流星尾在大氣中擴散的特性，模擬巴克碼解碼的過程，再與真實雷達資料進行比對，以驗證模擬的物理特性與真實流星尾相同。其次，模擬不同環境雜訊強度及不同都卜勒頻率情況下，對不同長度巴克碼的解碼結果進行討論。最後針對流星體回波訊號的高都卜勒頻率進行模擬分析，運用本研究所建立的模擬軟體進行雷達信號的分析，利於雷達系統在設計階段時就可依據不同的目標特性進行研究分析，選出適合的信號加碼技術。 ;Ambiguity function is a method of analyzing radar signals, which uses theory to analyze the effects of time delay and Doppler effect on radar echo signal. This study first analyzing the data received by the SKiYMET-GS meteor radar system, and refer to the characteristics of the meteor tail diffusion in the atmosphere to simulate the process of Barker code decoding, and then compares it with the real radar data. Comparison is performed to verify that the physical characteristics of the simulation are the same as those of the real meteor tail. Secondly, the decoding results of Barker codes of different lengths are discussed under the conditions of simulating different Gaussian white noise intensities and different Doppler frequency. Finally, simulating and analyzing the meteoroid echo signal of very high Doppler frequency. The software established in this study is used to analyze the radar signal, which will help the radar system to conduct research and analysis base on different target characteristics during the design satge, and select the appropriate signal coding technology.
Appears in Collections:	[Executive Master of Computer Science and Information Engineering] Electronic Thesis & Dissertation

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