Therefore , according to the mobility of the aircraft , the present study builts a multi - static location system , which uses the measurements detected by active or passive airborne sensors , when the aircraft is at the different positions . this study proposes two methods for locating sonobuoys . the first one is using aircraft - to - buoy slant range information 根據(jù)飛機(jī)的機(jī)動(dòng)性,本文構(gòu)造了使飛機(jī)到達(dá)不同點(diǎn)獲取相同的測(cè)量信息而實(shí)現(xiàn)定位的多基地定位系統(tǒng);依據(jù)機(jī)載有源無(wú)源探測(cè)器所能獲得的測(cè)量量,提出了兩種定位方法:斜距離測(cè)量定位法和基于卡爾曼濾波的方位測(cè)量定位法。
The implement of direction finding cross location and errors analysis are on the focus . the multi - warships bearings - only tracking algorithm based on direction finding cross location and distributed multi - warships bearings - only tracking are also presented . ( 6 ) the observation prerequisite of single warship bearings - only tracking is analyzed , and optimal maneuver of the observer warship is discussed 5研究了多艦純方位跟蹤的算法,把多艦純方位跟蹤分成集中式跟蹤和分布式跟蹤兩類(lèi),并分別進(jìn)行了分析比較,重點(diǎn)研究了測(cè)向交叉定位法的實(shí)現(xiàn)及誤差分析,給出了基于測(cè)向交叉定位的多艦對(duì)運(yùn)動(dòng)輻射源的跟蹤算法和基于信息融合的多艦純方位分布式跟蹤算法。
For supporting multilevel embedding domains , linear table instead of multilevel table is used to make the implementing of information tables management ( such as symbol table and constant table management ) simple and effective . to fulfill the searching algorithm of symbol table and constant table , an assistant table is introduced to solve the problem caused by the use of hash algorithm 在信息表管理方面,沒(méi)有采用多級(jí)的表組織方式,而采用了線(xiàn)性的表組織方式,簡(jiǎn)單高效地實(shí)現(xiàn)了對(duì)作用域多層嵌套的支持;在表的查找算法的實(shí)現(xiàn)中,通過(guò)輔助表的引入,解決了符號(hào)表和常量表的順序填寫(xiě)法與hash算法中表項(xiàng)記錄的hash函數(shù)定位法之間的矛盾這一難點(diǎn)。
Whether there is damage in composite material or not is determined by four methods : the damage detection method based on extreme value theory , the damage detection method based on ellipse technique , the damage detection method based on four points arch technique and the damage detection method based on nerve net 研究四種損傷定位方法的原理,即:基于極值理論的損傷定位方法、基于橢圓技術(shù)的損傷定位方法、基于四點(diǎn)圓弧定位法的損傷定位方法、基于神經(jīng)網(wǎng)絡(luò)技術(shù)的損傷定位方法。
4 . through our research , the whole measuring scheme is finalized for pulse - counting method with analog intervene chosen to measure distance , the differential coefficient method based on the least - squares curve fitting based on power functions chosen to measure velocity and qd optical spot location method chosen to measure angle 4 .通過(guò)研究,最終確定了以模擬插入脈沖計(jì)數(shù)法測(cè)距,冪函數(shù)族基最小二乘曲線(xiàn)擬合微分法測(cè)速,四象限探測(cè)器( qd )光斑定位法測(cè)角的脈沖激光雷達(dá)整體測(cè)量方案。
Chapter 3 considers location of a stationary target . after introducing the nonlinear filtering technique of particle filtering , location algorithm is implemented by particle filtering . on the base of fusing information of bearing and distance , a fast passive location algorithm based on particle filter is got 在第三章里,在簡(jiǎn)單介紹了測(cè)向定位的擴(kuò)展卡爾曼算法之后,主要研究了一種全新的非線(xiàn)性濾波技術(shù)-粒子濾波,并在此基礎(chǔ)了提出了基于粒子濾波的測(cè)向定位法和快速定位法。