超像距 的英文怎麼說
中文拼音 [chāoxiàngjù]
超像距
英文
hyperfocal distance-
In the retrofocus project, a retrofocus structure with two elements is used in the object lens to enlarge fov and back working distance, in the head of which the negative meniscus have the effect of balancing aberration and deviating rays like a prism. and a standard hyperhemisphere immersion lens with high refractive index is put behind the object lens to satisfy the receiving of a detector with smaller photosensitive
反遠距設計方案中物鏡採用二片式反遠距結構，增大了視場和后工作距離，彎月型負透鏡在前，具有平衡像差和棱鏡的偏向作用;物鏡後放置高折射率標準超半球型浸沒透鏡，滿足小光敏面探測器接收。In water, however, the peak overpressure does not fall off as rapidly with distance as it does in air.
不過在水中，超壓峰值並不像在空氣中那樣隨距離的增加下降得那麼快。With the minimumization of wireless camero, colourful video head weights no more than 100 grams costing roughly rmb 1000 however having a effective distance of 1500 meters, therefore photos taking, model s battle or using on submarine, taking photo in deep water or making robot can also be carried out by your own devices
隨著無線攝影器材的微型化，彩色攝像頭總重可以不超過100g價錢遠1500米發射距離也不過1000來元，因此可以利用自己的航模來進行，航空攝影，與航模空戰中，並可用在潛水艇模中，進行水下攝影，做成自己的水下機器人。The dissertation is mainly including four section : the first is the experiments done in the tank, which will supply the reliable information of imaging data ; the second is image edge detection by the use of the art of the zernkie moments, which is used to detect the liner and threaded edge of the object, the third is the underwater camera calibration technique, the forth is automatic positioning the location of the camera by used of the art of cross - ratio, the result of which is satisfied
本文工作分為四個部分：第一部分是水槽實驗部分，它為后續的工作提供了可靠的圖像數據信息；第二部分是基於zom距的直線、曲線邊緣提取技術及相關的與處理技術；第三部分，水下攝像機標定技術研究，基於改進的tsai演算法，採用逐步分解的標定策略。並探討了一種相對簡單的、靈活的標定技術；第四部分是攝像機定位技術研究，採用具有平移不變性的交比進行攝像機定位，模擬試驗的最大誤差不超過2 ，效果還是令人滿意的。The main work is given as follows : the stepped - frequency waveform synthesizing the wideband signal, the synthetic range profile ( srp ) by ifft, the range resolution of stepped - frequency waveform, the effect of the radial velocity on the srp, the radial velocity compensation, ambiguity function, waveform design and stepped frequency sar imaging and so on
包括：頻率步進波形合成超寬帶信號分析， ifft方法獲得目標一維距離像與距離解析度分析，徑向速度對目標距離像的影響、速度補償、頻率步進信號的模糊函數分析，以及頻率步進波形照射下的合成孔徑雷達成像、波形設計與系統設計。The flight could last up to nine hours and the balloon will travel a distance of 200 miles, according to mr prescot, who made his name shooting high - altitude stunts in films such as superman 3
熱氣球的飛行時間可能超過9個小時，飛行距離將達200英里約合322公里。飛行艙裝有電視攝像頭機，整個過程將通過當地電視網進行實況直播。The above waveforms discussed are to synthesize the wb or uwb with narrow band pulses. assuming the transmitting uwb linear frequency modulation ( chirp ), dechirp processing is introduced, and the method involved to obtain high resolution by reducing the if bandwidth is presented. furthermore, dechirp processing used to sar imaging is discussed, and the processing steps are described
< wp = 4 >以上研究的兩種信號形式都是通過窄帶子脈沖串相參合成的方法來獲得超寬帶回波信號，本文還探討了去斜率（ dechirp或stretch ）方法，分析了去斜率降低接收機中頻帶寬、 fft獲得目標一維距離像的原理，並探討了線性調頻去斜率合成孔徑雷達成像，給出了具體實現步驟。Portrait, super macro, landscape, sunset, night view, night portrait and text
人像、超微距、風景、日落、夜景、夜間人像及文字Due to disadvantage of fusion method generally, in this paper, the advantage of neural network based is used, these advantage include the ability of real - time processing data, the ability of knowledge overflowing and tolerance mistake of structure. taking the image of obstacle from ccd vidicon, these image must pretreat. and distill valid feature, at the same time, provide third dimension distance information from ultrasonic sensor group
在本文中，利用基於神經網路的信息融合方法的實時處理大量數據的能力、知識泛化能力以及結構的容錯性等優點，把ccd攝像機攝取的障礙物圖象，進行預處理並且提取有效特徵，同時有超聲波傳感器組來提供其第三維的距離信息。Ac lines become inefficient at distances around 1, 200 kilometers, because they begin to radiate the 60 - hertz power they carry like a giant antenna
傳輸距離在1200公里左右時，交流線路的效率會降低，因為線路會開始輻射出自己所輸送的60赫茲電力，就像支超大型天線。分享友人