Test and evaluation of long-endurance rotary modulation inertial navigation system

YU Xudong; LI Ding; GAO Lifu; LEI Wen

doi:10.37188/OPE.20233117.2525

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Test and evaluation of long-endurance rotary modulation inertial navigation system

Micro/Nano Technology and Fine Mechanics | 更新时间：2023-09-22

- Test and evaluation of long-endurance rotary modulation inertial navigation system
- Optics and Precision Engineering Vol. 31, Issue 17, Pages: 2525-2533(2023)
- 作者机构：
  
  1.国防科技大学前沿交叉学科学院，湖南长沙 410073
  2.国防科技大学南湖之光实验室，湖南长沙 410073
  3.海军装备部驻湘潭地区军事代表室，湖南湘潭 411100
- 作者简介：
- 基金信息：
- DOI：10.37188/OPE.20233117.2525
  CLC：
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YU Xudong, LI Ding, GAO Lifu, et al. Test and evaluation of long-endurance rotary modulation inertial navigation system. [J]. Optics and Precision Engineering 31(17):2525-2533(2023)
DOI：

YU Xudong, LI Ding, GAO Lifu, et al. Test and evaluation of long-endurance rotary modulation inertial navigation system. [J]. Optics and Precision Engineering 31(17):2525-2533(2023) DOI： 10.37188/OPE.20233117.2525.

摘要

随着旋转调制惯导系统精度的不断提升，单次导航实验周期越来越长，试验周期急剧增加，为试验鉴定和评估带来了困难。为合理评价长航时旋转调制惯导系统的导航精度，首先介绍了一种兼具自标定、自对准功能和导航功能的一体式旋转调制方案，将惯导系统自标定、自对准状态和导航过程中的旋转路径进行统一；然后提出了一种基于重复样本的长航时旋转调制惯导系统长周期导航测试方法，该方法可以更高效快捷地完成所需全部导航测试评估任务；最后，利用实验室30天的长航时导航测试数据进行了实验验证，最大定位误差为0.71（归一化），与独立航次统计结果相当，同时利用车载动态试验验证明了该方法的有效性和可行性。该方法可以大幅缩短导航系统测试的周期，为长航时惯导装备研制和试验测试评估提供有效手段。

Abstract

Prior to formally equipping an inertial navigation system （INS）， its navigation accuracy must be evaluated based on the national military standards. Owing to the continuous accuracy improvements of the rotary modulation INS， the duration of a single-navigation experimental cycle is increasing， thereby causing challenges to test and evaluate the INS system. Thus， to evaluate the navigation accuracy of a long-endurance rotary modulation INS， first， this study introduces an integrated rotary modulation scheme with self-calibration， self-alignment， and navigation functions that unify the self-calibration and self-alignment state of the INS and the rotation path in the navigation process. Subsequently， this study proposes a long-period navigation test method based on repeated samples for long-endurance rotary modulation INS to improve all required navigation testing and evaluation tasks. Finally， the study obtains and uses 30-day long-endurance navigation laboratory-test data to test and verify the maximum position error （0.71， normalized， which is equivalent to the statistical results of independent voyages）. Furthermore， the effectiveness and feasibility of the proposed method are verified using a vehicle dynamics test. The results show that the proposed method can significantly shorten the test cycle. Thus， this study provides an effective approach for developing and evaluating long-endurance rotary modulation INS.

关键词

惯性导航系统旋转调制长航时测试评估

Keywords

inertial navigationrotary modulationlong-endurancetest and evaluation

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