臺灣博碩士論文加值系統

本論文應用太陽盲區紫外光波段於光學雷達及非直視性通訊。太陽盲區紫外光波長介於200至280nm之間，因為臭氧層的強力吸收，此波段幾乎無法到達地球表面，所以稱作「太陽盲區」。此波段分別與上層和下層的大氣層成分有強烈反應，產生特殊的吸收與散射特性，適合運用於需要保密性及抗干擾性之遙測與通訊系統。
光學雷達部分將建立光強度與距離的關係，並考慮多種不同的雜訊以計算訊號噪音比；非直視性通訊部分將以幾何模型建立通訊方程式，並推導路徑損失、帶寬以及位元錯誤率。方程式分別建立完成後，進而考慮光學元件參數、幾何參數、大氣參數等，以電腦輔助模擬光學雷達以及非直視性通訊的各項表現，探討此波段是否能達到保密性及抗干擾等特點。另外，以市面上可取得的光學雷達測距儀驗證真實資料計數率與模擬之光子計數，並且開發陣列掃描功能，可作為往後光學雷達之設計參考。

The purpose of this study is to investigate the performance of solar-blind ultraviolet light applied to the LIDAR (Light Detection and Ranging) system and NLOS (Non-Light-of-Sight) communication system. Solar-blind ultraviolet light with wavelengths from 200nm to 280 nm, due to the absorption by the ozone layer, can hardly reach the earth's surface, hence the name solar-blind.
Solar-blind ultraviolet light reacts strongly with the components of the upper and lower layer atmosphere and produces unique absorption and scattering characteristics. It is suitable for use in telemetry and communication systems that require confidentiality and interference immunity.
The LIDAR section will establish the relationship between light intensity and distance, and consider a variety of different noises to calculate the signal-to-noise ratio. The NLOS communication part will establish the communication equation with the geometric model and derive the path loss, bandwidth, and bit error rate.
After the equations are established, we will analyze the performance of LIDAR system and NLOS communication system, considering optical component parameters, geometric parameters, and atmospheric parameters, etc., to investigate the feasibility of solar-blind ultraviolet light towards achieving confidentiality and interference immunity.
Furthermore, we use the commercially available single-photon avalanche detector (SPAD) range finder to verify the signal rate from experimental results and the photon count from simulations. Also, we develop the scanning function of the SPADs array, which can be used as a design reference for the backward LIDAR.

摘要 i
表目錄 ix
圖目錄 x
符號說明 xiii
第一章 緒論 1
1-1前言 1
1-2動機與目的 1
1-3文獻回顧 4
1-4研究架構 5
1-5太陽盲區紫外光介紹 6
第二章 光學雷達 8
2-1光學雷達基本原理 8
2-2光學雷達距離方程式 10
2-3訊號噪音比分析 14
第三章 非直視性通訊 17
3-1非直視性通訊概要 17
3-2單次反射-非直視性通訊模型 20
3-3路徑損失分析 23
3-4帶寬分析 24
3-5位元錯誤率分析 28
第四章 模擬結果與討論 32
4-1光學雷達模擬 32
4-1-1參數 33
4-1-2模擬結果 34
4-2非直視性通訊模擬 37
4-2-1參數 37
4-2-2路徑損失模擬結果 38
4-2-3資料傳輸速率模擬結果 43
4-2-4系統帶寬模擬結果 44
第五章 驗證與實作 45
5-1感測器簡介 45
5-2 VL53L1X量測結果及相關規格 46
5-2-1量測數值 46
5-2-2距離模式 47
5-2-3時間預算與測量週期 48
5-2-4 SPAD陣列範圍(ROI)與接收器視角(FOV) 49
5-3驗證光學雷達模擬結果 51
5-3-1衰減率 52
5-3-2有效距離 53
5-3-3驗證：資料計數率與光子計數模擬 54
5-4 SPAD陣列掃描-光學雷達 59
5-4-1串接架構 59
5-4-2開發SPAD陣列掃描-光學雷達 60
5-4-3展現SPAD陣列掃描-光學雷達 64
第六章 結論與未來展望 67
參考文獻 70

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