本文選題：大失準(zhǔn)角 + 初始對(duì)準(zhǔn)��； 參考：《宇航學(xué)報(bào)》2016年03期

【摘要】：針對(duì)陸用捷聯(lián)慣導(dǎo)系統(tǒng)(SINS)大失準(zhǔn)角初始對(duì)準(zhǔn)問(wèn)題,提出一種基于二階非線性量測(cè)的二階泰勒級(jí)數(shù)展開(kāi)的初始對(duì)準(zhǔn)算法。首先,將大失準(zhǔn)角非線性對(duì)準(zhǔn)問(wèn)題,轉(zhuǎn)化為具有線性系統(tǒng)方程和二階非線性量測(cè)方程的濾波問(wèn)題。然后,設(shè)計(jì)基于二階非線性量測(cè)方程的二階泰勒級(jí)數(shù)展開(kāi)的濾波算法,可以在任意姿態(tài)和無(wú)初值條件下進(jìn)行初始對(duì)準(zhǔn)和參數(shù)估計(jì)。最后進(jìn)行車(chē)載對(duì)準(zhǔn)試驗(yàn),結(jié)果表明,新算法可以在300 s內(nèi)完成實(shí)現(xiàn)大失準(zhǔn)角初始對(duì)準(zhǔn),對(duì)準(zhǔn)精度與傳統(tǒng)分段對(duì)準(zhǔn)算法相當(dāng)。
[Abstract]:In view of the initial alignment of the large misalignment angle of the land strapdown inertial navigation system (SINS), an initial alignment algorithm for the two order Taylor series expansion based on the two order nonlinear measurement is proposed. First, the problem of the nonlinear alignment of the large misalignment angle is transformed into a filtering problem with a linear system equation and a two order nonlinear measurement equation. The filtering algorithm of the two order Taylor series expansion of the two order nonlinear measurement equation can be used for initial alignment and parameter estimation under any attitude and without initial value. Finally, the vehicle alignment test is carried out. The results show that the new algorithm can accomplish the initial alignment of the large misalignment angle in 300 s, and the alignment accuracy is equivalent to the traditional piecewise alignment algorithm.

【作者單位】： 西北工業(yè)大學(xué)自動(dòng)化學(xué)院;中國(guó)工程物理研究院電子工程研究所;
【分類(lèi)號(hào)】：U463.67;U495

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