近似目標位置 的英文怎麼說

中文拼音 [jìnsìmùbiāowèizhì]
近似目標位置 英文
apparent target position
  • 近 : Ⅰ形容詞1 （空間或時間距離短） near; close 2 （接近） approaching; approximately; close to 3 （親...
  • 目 : Ⅰ名詞1 （眼睛） eye 2 （大項中再分的小項） item 3 [生物學] （把同一綱的生物按彼此相似的特徵分為幾...
  • 標 : Ⅰ名詞1 [書面語] （樹梢） treetop; the tip of a tree2 （枝節或表面） symptom; outside appearance; ...
  • 位 : Ⅰ名詞1 （所在或所佔的地方） place; location 2 （職位; 地位） position; post; status 3 （特指皇帝...
  • 置 : 動詞1. （擱; 放） place; put; lay 2. （設立; 布置） set up; establish; arrange; fix up 3. （購置） buy; purchase
  • 近似 : approximate; similar; approach; approximation; roughness; propinquity
  • 目標 : 1. （對象） target; objective 2. （目的） goal; aim; destination
  1. Due to the short distance among the planes which fly in a group, the conventional low resolution radar can not distinguish them in both distance and azimuth ? if we use the technology of isar to resolve the difference among doppler frequency of the targets and obtain a fine resolution cross - cross image, we may separate them, but a long time of coherent processing is needed <, for the formation targets, it can be approximately divided to rigid body and nonrigid body, so for the formation targets, that can be regarded as rigid which has a relative position and an identical movement, can be approximately considered as a large target, and be compensated by translational phase with the rule of minimum entropy, but for the most those cannot accord with the approximation of rigid, being the doppler - frequency of the aim is linear changed, by the relax method with short data, increases the resolving performance of multiple target to the aim in the frequency domain, since cross - range resolution is based on the accumulative time, so it is greatly improve the resolution to formation targets by the instant cross - range image which produced by radon - wigner transformation

    低分辨isan成像及干涉技術應用研究一因此直接無法分辨編隊目標的架數，我們借鑒isar的技術，通過較長時間的相干積累，在多普勒頻域上對目標進行分辨。而對于編隊目標，可分為近似剛性的多目標和非剛性的多目標，所以對于可以近似為剛體的編隊目標相對位置固定，運動方式一致，可以近似看作一個大目標，採用最小墑準則對平動相位的進行補償，但是大多數並不滿足剛體近似的編隊目標，由於目標在相干積累時間的多普勒頻率近似呈線性變化，通過對較短數據利用relax的時頻分析方法，提高了頻率域上目標分辨的性能。由於橫向解析度取塊于橫向積累時間，所以利用radnwigner變換得到瞬時的一維橫向距離像大大提高了對編隊目標的分辨，對模擬和實測數據的大量分析結果表明此方法的有效性和可行。
  2. Compared with the ordinary optimization algorithm of calibration, this algorithm is simple, less computational and high accuracy. finally, the paper put forward the ranging method based on similar triangle principle. it gives two ranging models according cooperation object vertical in the optical axis or not vertical in the optical axis and does experiment

    最後，本文提出了一種基於相似三角形原理的測距方法，根據合作目標與攝像機主光軸垂直與不垂直兩種情況，給出了兩種測距模型，建立實驗系統並進行了實驗，通過近距離段與遠距離段的測距結果與誤差分析驗證了此方法的有效性，能夠準確的確定合作目標的位置，計算簡單，測量精度高，具有重要的理論意義和工程使用價值。
  3. This paper improves the common - used way of prediction to synchronize the measurements, and then realizes the passive location with the use of the near location that comes from the point of intersection of the perpendicular of the two radials and the radial the target locates

    本文對常用的濾波預測方法進行改進，使之適合於方位數據的時間對齊，然後利用目標所在射線與兩異面射線的公垂線的交點作為目標位置的近似，來達到無源定位的目標。
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