关键词: 协同航弹, 高精度, 组合导航, 紧组合, 标量化

Abstract:

To meet the requirements of low cost and high precision of the project， a high-precision integrated navigation system is designed for the cooperative aerial missile application platform. The system operation is scalarized， which greatly improves the performance of the cooperative aerial bomb. The navigation system is mainly composed of tight integrated navigation with pseudo range and pseudo range rate measured by the satellite receiver and feedback correction with strapdown inertial navigation， which can achieve high navigation accuracy in different satellite environments. However， due to the complex algorithm of high-precision navigation system， the matrix in the filter needs iterative operation， which greatly affects the operation efficiency of the system. To improve the system operation speed and system performance， the measurement matrix in the equation is split， and the sparse matrix in the operation is scalarized. This method omits a large number of multiplication operations in the algorithm operation， and shortens the operation time to the original 17.9%. Finally， the aerial missile flight test of the system is carried out. The results show that the navigation and positioning accuracy of the proposed system is high， which fully meets the navigation requirements of the project.

Key words: cooperative aerial bomb, high precision, integrated navigation, tight integration, scalarization