發(fā)布時間：2019-06-24 09:27

【摘要】：重力擾動已經(jīng)成為高精度長航時慣導系統(tǒng)的主要誤差源之一。針對船用高精度慣導系統(tǒng)的重力擾動抑制問題,從艦船INS誤差模型出發(fā),推導了重力擾動在慣導系統(tǒng)中的傳播特性。仿真結(jié)果表明垂線偏差將引起系統(tǒng)較大的舒拉振蕩誤差。為抑制重力擾動對系統(tǒng)的影響,引入常速度誤差反饋阻尼網(wǎng)絡(luò)和相位超前串聯(lián)阻尼網(wǎng)絡(luò)。分析了重力擾動在水平阻尼網(wǎng)絡(luò)中的傳遞特性,實現(xiàn)了相應(yīng)濾波器的設(shè)計。在此基礎(chǔ)上完成了實驗驗證,海上試驗結(jié)果表明,所引入的兩種阻尼網(wǎng)絡(luò)都能夠阻尼掉重力擾動引起的舒拉振蕩型導航誤差,其中,相位超前串聯(lián)阻尼網(wǎng)絡(luò)效果更優(yōu),抑制率達到70%以上。
[Abstract]:Gravity disturbance has become one of the main error sources of high precision long voyage inertial navigation system. In order to solve the problem of gravity disturbance suppression in marine high precision inertial navigation system, the propagation characteristics of gravity disturbance in inertial navigation system are derived from the ship INS error model. The simulation results show that the vertical deviation will cause a large Shura oscillation error of the system. In order to suppress the influence of gravity disturbance on the system, constant velocity error feedback damping network and phase advance series damping network are introduced. The transfer characteristics of gravity disturbance in horizontal damping network are analyzed, and the corresponding filter design is realized. On this basis, the experimental results show that the two damping networks can dampen the Schulerian oscillatory navigation error caused by gravity disturbance, among which the phase advance series damping network is more effective, and the suppression rate is more than 70%.
【作者單位】： 天津航海儀器研究所;
【基金】：國家安全重大基礎(chǔ)研究資助項目(613219)
【分類號】：TN96
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本文編號：2504947