sonar range 中文意思是什麼
sonar range
解釋
聲納距離-
With the development of reducing noise technology and the advent of quieter targets, sonar faces up to the challenge of low signal - to - noise ratio detection while high detection performance is demanded by weapons ' s increasing range. moving target detection is two of first and last of sonar " four main tasks : detection, loacalization, classification and tracking / motion analysis of targets, which is the base of other two functions
隨著降噪技術的發展，安靜型目標的出現，聲納技術面臨低信噪比的挑戰，武器射程的增加又對聲納提出了更高的要求，關繫到聲納的四大功能（檢測、定位、識別和跟蹤/目標運動分析）第一和第四個的運動目標檢測任務重大，因為它對其餘兩個起著基礎性的指導作用。 -
An innovative and novel concept of communication sonar equation ( cse ) is introduced in the dissertation. according to the communication sonar equation ( cse ), all solutions for improving the working range of underwater communication system are fully discussed. considering the restrictions in practical application, some methods are confirmed, others are discarded
本文從概念上創新性地提出了通信聲吶方程，並根據通信聲吶方程全面剖析了增加水聲通信系統作用距離的各種可能途徑，然後結合實際應用的要求確定了本研究具體可採用的措施並加以實現。 -
The propagation characteristics of underwater acoustic channels and their influences on long - range information transmission are studied thoroughly. based on the sonar equation, the optimal frequency band is abtained. from the calculation about transmission loss, the source level is forecasted. based on the random time varying channel theory, the fading characteristics of long - range underwater acoustic channels are analyzed
系統、深入地研究了水聲通道特性及其對水聲遠程信息傳輸系統的影響；從聲納方程出發，確定了系統的最佳工作頻段；在聲傳播損失計算的基礎上，給出了聲源級的預報；基於時變通道理論，描述了遠程水聲通道的衰落特性。 -
Moreover, the bistatic operational range has been estimated for different frequency. the results show that the operational range of bistatic sonar is higher than that of monostatic sonar
通過對不同頻率下雙基地聲吶作用距離的預報，表明在相同優質因數條件下，雙基地聲吶可以具有比單基地聲吶更大的作用距離。 -
( 4 ) three multistatic sonar localization algorithm based on range information are proposed. firstly, the tol algorithm is given. the formulas are provided for both the position and the variance of the position estimates
首先，將tol （ time一only一locallzation ）演算法擴展到多基地聲吶定位中，給出多基地tol演算法的原理，並對不同站址布局下，系統的誤差分佈特點進行了研究，給出了最優的站址布局方案。 -
The advanced imaging sonar has been the primary tool to do objects " detecting and recognizing underwater because of its wider imaging range and stronger anti - jamming capability
成像聲納由於具有更大的成像范圍和抗干擾能力，成為水下目標搜索和識別的主要工具。 -
The image registration was discussed the following three steps : initial registration, pre - filtering, sub - pixel registration. an adaptive range - filtering algorithm was proposed, which filters the different parts of object spectrum in master and slave synthetic aperture sonar images
干涉sas復圖像的配準按實際信號處理過程分三個步驟論述：初配準、頻譜預濾波和子像素級配準，其中針對預濾波提出了一種自適應的距離向頻譜濾波方法。
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