navigation n. 1.航行;導(dǎo)航;領(lǐng)航;航海[航空]術(shù)。 2.〔集合詞〕船。 3.〔古語(yǔ)〕航路;海上交通。 aerial navigation 空中航行。 inland navigation 內(nèi)河航行。 astro navigation 宇宙航行;天文導(dǎo)航。 blind navigation 儀表導(dǎo)航。 the N- Acts 〔英國(guó)〕航海條例。 There has been an increase in navigation through the canal. 通過(guò)那條運(yùn)河的船數(shù)增多了。 adj. -al
error n. 1.錯(cuò)誤;失錯(cuò)。 2.謬見(jiàn),誤想;誤信;誤解。 3.罪過(guò)。 4.【數(shù)學(xué)】誤差;【法律】誤審,違法;(棒球中的)錯(cuò)打。 commit [make] an error 犯[出]錯(cuò)。 correct errors 改正錯(cuò)誤。 a clerk's [clerical] error 筆誤。 mean errors 標(biāo)準(zhǔn)誤差。 a writ of error 【法律】(推翻錯(cuò)誤原判的)再審命令。 nature's error 天生畸形。 in error 弄錯(cuò)了的;錯(cuò)誤地。 errors of commission [omission] 違犯[疏忽]罪。 fall into error 誤入歧途。 nature's error 天生畸形。 adj. -less 無(wú)錯(cuò)誤的,正確的。
Some teams may cover twice the distance due to their route and navigation errors 有的隊(duì)由于路線及識(shí)圖越野出現(xiàn)偏差,可能要走兩倍于直線距離的路程。
And in the early time many integrated navigation error model was come into being . in all of them the model derivated by britting and widnall was the representative 最具代表性的是利用britting和widnall推導(dǎo)出的誤差模型,該模型是基于地理系,考慮到系統(tǒng)誤差和傳感器誤差。
After the instrument error of sins is analyzed , it can be concluded that the quadratic model is more sensible to navigation error , and with instrument error taken into account , the linear model is better than the quadratic model 通過(guò)捷聯(lián)慣導(dǎo)儀器誤差的分析,發(fā)現(xiàn)二次模型對(duì)捷聯(lián)慣導(dǎo)導(dǎo)航參數(shù)誤差更為敏感,考慮慣導(dǎo)儀器誤差后,線性模型的修正效果要優(yōu)于二次模型。
The paper presents the form of sins / odometer ( od ) / global position system ( gps ) integrated navigation system based on sins . state and observation equations are established for kalman filter . the simulation result shows that the integrated navigation system can reduce navigation error when using the feedback calibration method 對(duì)捷聯(lián)慣導(dǎo)系統(tǒng)、里程儀( od )和全球定位系統(tǒng)( gps )誤差方程進(jìn)行了分析,建立了以捷聯(lián)慣導(dǎo)系統(tǒng)為主的用于卡爾曼濾波的系統(tǒng)方程和觀測(cè)方程,給出了車載組合導(dǎo)航系統(tǒng)的分布式濾波組合方案。
Abstract : the attitude error performance of electrostatic gyro should be understood and the relevant error equations must be set up in order to ensure the navigation precision of esgm . the relation between the navigation errors and the attitude errors of gyro was derived by use of spherical triangle . the simulation results show that the temporal performances of the longitudinal and distance errors which come from the initial alignment errors are periodically variational . they also show that the longitudinal and distance errors resulted from gyro drifts are not convergent in time . thus , the effects of initial alignment errors and gyro drifts can not be neglected and must be estimated and compensated 文摘:為了保證靜電監(jiān)控器的導(dǎo)航定位精度,需要了解靜電陀螺的姿態(tài)誤差特性,建立相應(yīng)的誤差方程.本文采用球面三角形原理推導(dǎo)了導(dǎo)航定位誤差與陀螺姿態(tài)誤差的關(guān)系式.仿真結(jié)果表明,由初始定向誤差引起的經(jīng)度誤差和距離誤差的時(shí)間特性是周期變化的;由陀螺漂移引起的經(jīng)度誤差和距離誤差是隨時(shí)間發(fā)散的.因此,初始定向誤差和陀螺漂移的影響不能忽略,必須對(duì)其進(jìn)行估計(jì)和補(bǔ)償