range and time to search 中文意思是什麼
range and time to search
解釋
搜索范圍和時間- range : vt 1 排列；整理（頭發等）。2 使歸類[班、行、隊]；把…分類。3 〈用被動形或反身形〉加入，站住…的一邊...
- and : n. 1. 附加條件。2. 〈常 pl. 〉附加細節。
- time : n 1 時，時間，時日，歲月。2 時候，時刻；期間；時節，季節；〈常pl 〉時期，年代，時代； 〈the time ...
- to : adv 到某種狀態；〈特指〉到停止狀態；關閉。 ★也常和動詞結合，略去其後賓語，而構成成語： The door i...
- search : vt 1 搜查；檢查（身體、衣袋等）；搜索，搜尋；找；尋找。2 調查；查究；探求；追求；根究 （into）。3...
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Due to existing signal processing technology ’ s shortage such aslow measurement, narrow measurement range precision and other poor performance, we introduced a high - precise signal processing technology : firstly, to get power spectrum with hanning windowed welch modified periodogram, search its peak value frequency ; secondly, to apply zooming analysis via goertzel algorithm ; at last, to get a highly precise doppler frequency with energy centrobaric rectifying algorithm 。 the simulating result indicated that this technology introduced could get accurate doppler frequency 。 depending on above discussed technology, we designed a signal processing scheme, and developed a signal processing system. the running result showed high performance, verified the feasibility and reliability of the highly precise signal processing technology introduced. in a word, the technology improved ldv ’ s performance such as measurement precision, measurement range, dynamic response time 。 and it will have a wide application foreground
針對存在的缺點，本文提出了一種應用於激光多普勒測速的高精度信號處理技術，即首先利用加hanning窗的welch修正周期圖演算法得到信號功率譜，搜索其譜峰值頻率，接著利用goertzel頻譜細化演算法對搜索的譜峰進行細化分析，再引入能量重心頻譜校正演算法對細化后的譜峰進行校正分析，從而將離散頻譜分析演算法、頻譜細化演算法和頻譜校正演算法三者有機結合起來，充分發揮各自的優點:通過加hanning窗的welch修正周期圖演算法快速得到功率譜及峰值頻率，通過goertzel演算法獲得分析頻帶的高解析度頻譜，然後通過能量重心校正演算法對細化后的頻譜進行高精度校正，這樣不僅保證了演算法的高效性，而且大大提高了分析的精度。 -
Cosmic ray test was carried out to choose and optimize working parameters of full - length prototype and its data acquisition system, verify the electronics system about dynamic range, drift time measurement search window, charge measurement integral width, work stability and electronics grounding and noise. in experiment, acquired abundant experience with the solution of actual problem and verified their reliability of physical design. this lays the foundations for the successful construction of the besiii drift chamber and electrical system
測試過程中我們調整了電子學的動態范圍、漂移時間和電荷測量參數驗證了電子學系統工作的穩定性、抗干擾能力及噪聲水平等並成功解決了實驗過程中遇到了問題。通過長時間的取數進一步檢驗了全長模型和電子學系統工作穩定性，驗證了全長模型及其數據獲取系統物理設計的可靠性，為漂移室和電子學系統的成功研製奠定了基礎。 -
In satellite navigation and positioning system, time is important information for fast and direct acquisition of long cycle code, one of its important aspects is the uncertainty compression of signal ' s propagation delay to reduce time search range
摘要衛星導航定位系統中，輔助長碼快捕的一個最重要的信息是時間信息，衛星信號傳播時延估計是提供先驗時間信息，減少時域搜索范圍的一個重要方面。 -
After the compensation based on the rule of the minimum entropy, the resolution of the cross - range image is lower as the large size and non - uniform rotation, which cause the image to be not right at all sometimes. in order to eliminate effect of the non - stationary rotation, the first order approximation and relax algorithm are adopted to search the initial frequency, amplitude, frequency modulation rate and obtain the dynamic image of the target at any time
分析了低分辯雷達的成像演算法，建立在最小熵補償基礎上的演算法得到的橫向像的解析度仍然比較低，尤其對大的目標和機動目標，為此我們採取了一階近似的relax演算法搜索目標的初始頻率、幅度、解調率從而獲得目標的動態一維像，模擬數據和試驗結果證明該方法是有效的。 -
Because of communities divided by category tree, when users wants to search some commodity, he only needs to send his search requests to special community, which reduces the search range, improves search effect and decreases the search time
本文提出一種基於分類樹的搜索演算法，基於分類樹所劃分的社區，用戶要查詢相應的商品的時候，只要到特定的社區中進行搜索就可以，減少了搜索的范圍，提高了搜索的命中率，縮短了搜索時間。 -
Another algorithm dba *, which represents the environment by dynamic binary trees and reduces the search range, is also proposed to optimize algorithm ba *. the simulation of soccer games shows time saving in real - time search and an optimal path planning. 4
在此基礎上，提出將二叉樹描述環境模型動態化，在搜索中隨著智能機器人的位置變化，動態地縮小廣東工業人學丁學博上學位論義其搜索范圍的osn 」 （動態一叉樹表示環境的srt 」演算法）演算法。
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