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題名 | 具錯誤控制編碼之微飛行器視訊及飛航數據鏈路傳輸系統研究=Study on Wireless Communication of AV and Data Link with Error Control Coding for Micro Aerial Vehicles |
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作者 | 李勝義; 郭智賢; 張博翔; | 書刊名 | 航空太空及民航學刊. 系列B |
卷期 | 43:1 2011.04[民100.04] |
頁次 | 頁19-28 |
分類號 | 447.7 |
關鍵詞 | 微飛行器; 數據鏈路; 無線傳輸; 迴旋碼; 頻移鍵控; Micro aerial vehicle; Data link technology; Wireless communication; Convolution code; Frequency-shift keying; FSK; |
語文 | 中文(Chinese) |
中文摘要 | 本研究旨在酬載重量及傳輸速率限制條件下,探討具備錯誤控制編碼功能之微飛行器(MAV)即時影像與GPS飛航數據無線回傳系統,以提昇無線傳輸鏈路在受障礙物遮蔽環境下的資訊回傳正確率。由於MAV型體小、質量輕,在低雷諾數飛行條件下氣動力效能大幅降低,酬載重量亦大幅縮減,如何傳送即時影像及飛航數據存在極大的挑戰。本研究內容包含運用移頻鍵控(FSK)調變之數據處理軟體研究與硬體實現、以創新的傳輸資訊規劃大幅降低傳送數據量、運用傳輸通道容錯編解碼技術提升障礙物遮蔽環境下的回傳正確率以及接收端動態資訊介面整合等。經由系統整合、地面測試以及飛行測試,驗證確實可搭載於40公分級MAV並執行低空飛行及受障礙物遮蔽環境下的無人偵察回報任務,靜態測試結果顯示在350m地面測試距離有/無容錯編解碼之回傳正確率可達99.6%及87.6%,錯誤率由12.4%降爲0.4%大幅降低2個級數,而動態飛行測試結果也顯示了具備容錯編解碼之飛行測試回傳正確率亦達98.2%~99.3%,研究成果可作爲無人載具資訊回傳系統的設計參考,而各種傳輸通道環境的錯誤率分析亦有助於建立通道模型,並做爲進一步提昇傳輸效能的參考依據。 |
英文摘要 | This paper is to explore the feasibility of real-time video and GPS data transmission wirelessly to the ground station under payload constraints of micro aerial vehicles (MAV). Due to its small size and low weight, MAV's low Reynolds number flight leads itself to a situation of low aerodynamic efficiency, which also reduces its payload capability drastically. To transmit real-time video and flight data simultaneously thus tends to be very difficult. The research includes: development of data processing software and hardware, an innovative transmission data planning for MAV, implementation of fault tolerance channel coding/decoding technique, and integration of ground display interface. After system integration and evaluation, fight test results reveal that it is capable to execute unmanned reconnaissance mission and propagate flight data under low-altitude and shadowing environment. Performance evaluation shows that 99.6% and 98.2% of correct data rate are achieved in 350m ground test and MAV's flight test, respectively. The analysis of error data rate is helpful for transmission channel modeling and for further improvement of the transmission performance. |
本系統之摘要資訊系依該期刊論文摘要之資訊為主。