emitting antenna 中文意思是什麼
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The paper includes four sections followed here : the first section studies the modeling of signals of pulse doppler radar seeker, and establishes a radar signal simulation model, including radar emitting signal model, receiving signal model, receiving echo signal model, clutter model, noise model, sum channel directional pattern of antenna model, difference channel directional pattern of antenna model, sheltering model, rcs model, glint noise model, etc. the second section studies signal processing of pulse doppler radar seeker, and establishes radar signal processing mathematical model and data processing mathematical model for simulation, including windowing, doppler filtering, envelope demodulation, pdi, cfar, centering, velocity tracking, angle tracking, a - b filtering, etc. the third section studies the modeling of modified proportion guiding, and establishes guiding model, then dynamic simulation results is provided
論文的主要工作包括四部分：第一部分研究了脈沖多普勒雷達導引頭的信號建模問題，建立了雷達信號模型，主要包括：發射信號模型、接收信號模型、目標回波信號模型、雜波模型、噪聲模型、和差通道天線方向圖模型、遮擋因子模型、接收機噪聲模型、目標雷達截面積統計性模型、目標角閃爍模型等。第二部分研究了脈沖多普勒雷達導引頭的信號處理模式，建立了信號和數據處理模型，主要包括：加窗和多普勒濾波、包絡檢波、檢波后積累、頻域cfar處理、速度定心、速度跟蹤、角跟蹤、 ?濾波等，然後給出了信號處理流程。 -
More than a half of domestic model friends have not paid enough attention on the right use of channel flag, ribbon is often tied to the antenna of emitting device to see the direction of wind sometimes no strips, in fact channel flags are mainly used to tell the different channels by it s distinct colours in addtion to observing the direction of wind, please notice that some colourful flags can no longer be used
3 .我有我品味多半國內模友在飛行時都沒有注意正確使用頻道旗，往往只是在發射機天線上繫上飄帶以便看風向有的甚至沒有，其實頻道旗除了可用於看風向外，最主要的作用是以其不同的顏色區分不同的頻道，注意不要隨意掛五顏六色的旗了哦！
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