視距計 的英文怎麼說
中文拼音 [shìjùjì]
視距計
英文
stadimeter-
Sources within pakistan have alluded to an aam that incorporates elements of the advanced bvr darter designs that were once part of south africa ' s previously well - funded development plans
來自於巴基斯坦的消息已經間接提到了先進超視距標槍手設計上的合作內容曾經就是南非先前大量投資的開發計劃的組成部分。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。This paper is based on the projective geometry of computer vision and mainly made the research on the image - based distance measurement problems. the main research achievements are shown as the following : 1
本論文從計算機視覺中的射影幾何理論出發,圍繞基於圖像的距離測量問題展開研究,主要的研究內容和成果如下: 1In this dissertation, the location estimation methods for mitigating the influence of the nlos propagation and the location parameters estimation methods for ds - cdma cellular radio systems are studied. furthermore, the influence of the nlos propagation on the performance of radiolocation systems is analyzed. moreover, by using pilot sequences from the base station ( bs ) in wireless cdma cellular networks, the techniques for detecting and locating and tracking for 3 - d moving target are provided
本論文針對蜂窩網中移動臺定位這一熱點,研究了移動臺定位的非視距影響減輕技術以及適用於ds ? cdma系統的定位參數估計技術,分析了非視距對定位性能的影響,並研究了利用蜂窩網路資源對三維運動目標的檢測、定位與跟蹤技術。It is the time to resurvey, organize and plan our nation ' s ocean strategies as china ' s concern about the ocean strategies is not as sufficient as demanded by the challenging salutation
摘要已經到了一個必須對「國家海洋戰略」進行重新審視、梳理和設計的時候,這是因為,中國對海洋戰略的重視程度離挑戰引發的需求還有不少差距。Intel ' s planned effort to enter the digital television market was abandoned by the company recently only 10 months after a splashy introduction at the consumer electronics show
英特爾公司近期放棄了其入主數字電視市場的計劃,這距其在「消費類電子產品展會」上大張旗鼓的宣傳僅有10月之久。In the field of calculating the distance of two points in the body internal organ image and in the field of calculating the volume of body organs, we test a new method - stereology, and provide reference experience of the application of stereology in the medical field
在計算臟器斷層截面上某兩點間距及計算三維臟器的體積方面,我們嘗試應用了新的方法? ?體視學的方法,對體視學在醫學領域的應用提供了參考經驗。Two kinds of improved design project are proposed : retrofocus project and image telecentric project. original structures are solved through gauss optics and primary aberration principle, and the aberration is optimized and analyzed too. to form staring opto - electronic countermeasure device, distributing of optical unit array is simply analyzed in the end
針對初始設計方案的不足,提出兩種改進的設計方案:反遠距方案和像方遠心方案,通過高斯光學和初級像差理論求解出光學系統初始結構,利用光學設計軟體進行像差分析和優化,並且對設計的光學系統組成凝視型光電對抗設備時光學單元陣列分佈進行了簡單分析。When radio waves pass through half of the first jump distance, the effects of meteor trails scattering on a radar system are investigated
計算了電波經電離層跳躍前進的過程中,流星余跡散射對後向散射超視距雷達系統性能如作用距離和發現概率等的影響。And this measurement, in turn, would allow scientists to estimate not only the distance between earth and the sun but also the scale of the entire solar system
天文學家已經由克卜勒的行星運動定律知道所有行星和太陽的相對距離,所以他們能夠由金星視差計算出太陽視差,讓科學家得以估計地球與太陽的距離,以及整個太陽系的尺度。Parallel with spin out 1, the fcs core program is on track to deliver non - line - of - sight cannon early prototypes in 2008
與一階段成果平行進行的未來戰斗系統的核心項目,即非視距火炮原型,也將按計劃於2008年進行交付。To apply neural networks to the simulation of ship maneuvering motion, an nnrm ( neural network recursive model ) is designed and used to simulate a serial full - scale tests conducted in yangtze river and the comparison between simulated results and the measured ones is satisfactory. ship trajectory tracking is a well - known maneuvering problem with an increasing practical and theoretical interest. but the real - world tracking applications encounter a number of difficulties caused by the presence of different kinds of uncertainty due to the unknown or not precisely known system model and environmental effects
本文利用智能控制技術的優越性,嘗試將智能化控制技術用於船舶操縱運動模擬,初步探索了將現代控制理論和智能技術融入船舶操縱預報、模擬的研究方法,提出了用於船舶操縱運動模擬的線性神經網路( lnn ) 、神經網路遞推模型( nnrm )和nnrm 、交錯航跡距離( cte )和視距( los )混合控制器模型三種控制模型:並將控制模型的理論研究應用到實船試驗數據分析、計算,將模擬結果與實際的試驗結果作了比較。" over the horizon " technologies - these facilitate ground - based methods of harassment ( eg the alaskan haarp project which bounces signals off the ionosphere )
「視距外」技術-這些促進了以地面為基礎的折磨方法(例如阿拉斯加高頻活躍極光研究計劃,它反射信號到電離層) 。Some possible schemes in othr target tracking are given in the last part of the paper
總結了一些可應用於超視距雷達目標跟蹤演算法設計的備選方案。New threat assessment non - parameter model in beyond - visual - range air combat
一種新的超視距空戰威脅估計非參量法模型The subject of this dissertation is three - leg intersections with unsignalized control in highway system. there are two main objectives : one is to discuss crashes statistical characteristics and carry out a method to predict safety performance. the second one is that make further discussion on crashes inherent mechanism, especially on relationship between of driving behavior, waiting time and acceptance gap
本文研究的目的主要有兩個:一是探求交叉口事故的統計特性,提出預測交叉口安全性能的模型;二是在這個模型的指引下,進一步在理論上探討交叉口事故和違章的機理,重點探討可接受間隙、等候時間與駕駛行為三者之間的關系,從視距設計、控制和管理對策上提出避免高危駕駛行為的設計方法。2. in the simulation environment which is deliberately designed for the othr ' s multipath propagation phenomenon, strict and detailed reasoning and demonstrations of the coordinate registration are given. and then a simulation justifies the correctness of the registration
針對超視距雷達多徑傳播現象設計的一種模擬環境,對其中量測模型的坐標變換給出了嚴格而詳細的證明,然後根據證明的公式設計了具體的模擬示例,並對該坐標變換公式組進行了誤差統計。Due to multipath effect, multiple access interference ( mai ), near - far effect, and mainly the non - li ne - of - sight ( nlos ) propagation, the errors in the estimated location parameters and position location occur
在cdma蜂窩網的定位中,引起定位參數估計誤差與定位誤差的因素有非視距傳播效應、多徑傳播效應、多址干擾及遠近效應。In cellular envirorunents, because of the influence of several adverse factors, such as muitipath, non - line - of sight propagation, noise, interference and channel frequency characteristics, radio statistics measuremenis like tdoa, toa and aoa related to mobile position, the performance of location algorithms mny be significantly degraded and the position estimation of ms is inevitably biased
在蜂窩網路環境中,由於受多徑、非視距傳播、噪聲、干擾和通道頻率特性等多種不利因素的綜合影響,使tdoa 、 toa 、 aoa等與移動臺位置有關的電波特徵測量值不可避免地出現較大誤差,從而使各種定位演算法的性能顯著下降,造成移動臺位置估計出現較大偏差。At first, by using the feature that the excess delays of nlos propagation follow the exponential distribution, the los propagation parameters are reconstructed and the toa parameters measured from all bs are preprocessed. then, the ms ' s position is estimated by the los locating algorithm with the preprocessed data. finally, to mitigate the effect of the errors in reconstructed parameters, the estimated results are smoothed
首先,利用非視距傳播時延服從指數分佈的特點,對不同基站一次測量的數據進行預處理,重構視距傳輸參量;然後,對處理后的數據採用視距定位演算法估計移動臺位置;最後,對估計結果進行平滑后處理,以減小重構出的參量誤差的影響,進一步提高定位精度。分享友人