target azimuth 中文意思是什麼
target azimuth
解釋
目標方位-
A pure software solution is given in order to gather more tracking data. the reason of the zenith - blind - zone forming is analyzed detailedly. the conclusion is that the extent of the zenith blind zone was restricted by three parameters : maximum azimuth angular velocity of tracking mount, flight level and airspeed of the target
本文依據不改變系統硬體結構的研究思路，提出一個基於目標軌跡預測技術的解決過天頂跟蹤的方案構想，給出具體實施步驟，預計可使系統單站單圈次跟蹤採集到的有效數據總量提高約一倍。 -
In order to improve the efficiency of classification based on feature matching, the method of azimuth estimation from sar image is studied. a method of target ' s azimuth estimation from sar image using peak featur e based on linear regression is proposed, besides goodish estimation accuracy and high computation efficiency, it can also provide the confidence interval of the estimation, which can meet the need of model - based sar atr system that uses feature very well
為了提高基於特徵匹配的saratr系統的分類效率，論文進一步研究了sar圖像目標方位角估計方法，提出了一種利用峰值特徵基於線性回歸的sar目標方位角估計方法，該方法除了具有計算速度快、估計精度較高的特點之外，還能在估計方位角的同時，給出該估計的置信區間，從而能更好地滿足利用特徵基於模型saratr系統的需要。 -
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。 -
The azimuth from the launch point to the target was about 346 deg., or 15 deg. west of due north
有關消息來源稱，發射點至目標的方位角約346度，或者說北偏西15度。 -
In order to enhance the meter - wave radar ’ s precision of azimuth measurement, the short - baseline interferometer is chosen to measure the azimuth of the target
為了提高米波雷達的方位角測量精度，文中選擇了短基線干涉儀角度測量體制。 -
Then its mathematical model is set up and its validity is proved by computer simulation results. in the following, a new processing method of using three - antenna to detect, locate and image moving target is proposed based on dpca and interferometric theory. this method can not only suppress ground clutter effectively and detect moving target but also locate accurately azimuth position of moving target and estimate its velocity
深入分析了dpca和干涉的原理后，提出一種沿航跡放置的三天線sar動目標檢測和成像方法，詳細描述了該方法的工作機理，給出系統組成框圖，並給出該方法進行動目標檢測、定位、測速和成像的步驟，然後給出了計算機模擬方案及大量的模擬結果，充分證明了採用該方法不僅能夠有效的抑制地雜波、檢測動目標，還能夠對動目標精確定位，準確估計出動目標的速度，對動目標重新聚焦成像。 -
Scatterring centers from each azimuth range profile are extracted firstly, and then turn two dimension distributed target scatters into one dimension and integrates all scatters energy along one dimension
模擬結果表明，該方法較距離擴展目標檢測方法的檢測性能有明顯改善，且其檢測性能隨著角解析度的提高而進一步改善。 -
Spotlight synthetic aperture radar can efficiently obtain an image with very high azimuth resolution, since its antenna illuminate the fixed target on the ground. bistatic radar is not a new concept and its fundamental principles have been known and demonstrated many years before the development of operational monostatic radar
由於其天線波束始終照射同一目標場景，因此可獲得更大的方位多普勒帶寬和更高的方位分辨力，但實際上由於受數據處理條件、載體運動誤差等因素的影響，方位解析度的提高是有限的。 -
Through the analysis of the test data and the new development in the relevant literature, some more realistic models for sea - clutter and multipath propagation is concluded and the simulation is accomplished in the software. they provide the foundation for low - altitude radar target detection & tracking techniques research. in the second part, radar low - altitude target detection & parameters ( elevation - azimuth - range delay - doppler shift ) measure are studied
（海）雜波和目標信號的多徑傳播嚴重影響了雷達低空目標探測與跟蹤的性能，通過分析國內外的有關試驗數據和最新的研究進展，總結出比較接近實際的海雜波和多徑傳播模型，並在有關軟體中實現了海雜波與多徑傳播的模擬，為進一步研究各種低空目標探測與跟蹤測量演算法提供了保證。 -
The short - baseline interferometer system may obtain azimuth, distance and speed of the target, therefore the system may realize to two - dimensional localization of target
短基線干涉儀系統可以測得目標的方位角、距離和速度，因此系統可以實現對目標的二維定位。 -
A guarantee is provided for the azimuth and deviation of the re - entry horizontal wells of oil reservoir engineering and drilling engineering to make the hole trajectory smooth, achieve the drilling and well completion techniques without a hitch and raise the target rate
為滿足油藏工程、 ?井工程對側?水平井方位、水平位移的要求，達到井眼軌跡平滑，順利實現?井、完井工藝，提高中靶精度提供了保證。 -
First, the range - velocity transformation and the target detection are finished, and estimate the range, velocity and azimuth of the detected targets for target tracking
故必須先依據高頻雷達信號處理流程完成對二維距離?速度譜變換以及對目標的檢測、參量估值和航跡建立。
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