A method and device for measuring the attitude of an aerospace electromagnetic soft bracket pod

By using the GNSS antenna solution on the soft support pod, the problem that the inertial navigation system cannot measure the posture of the soft support pod is solved, and the stable attitude measurement and deformation calculation of the soft support pod is realized, which improves the system performance.

CN113885065BInactive Publication Date: 2025-03-25CHINA AERO GEOPHYSICAL SURVEY & REMOTE SENSING CENT FOR LAND & RESOURCES
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Patent Information

Application Number
CN202111152293.1
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2021-09-29
Publication Date
2025-03-25
Estimated Expiration
Not applicable · inactive patent

AI Technical Summary

Technical Problem

In the prior art, the inertial guide system's attitude measurement method for hard bracket pods is not suitable for soft bracket pods, because the joints of the soft bracket can move freely, resulting in the inertial guide system being unable to accurately measure the attitude of the entire pod.

Method used

Using a pure GNSS antenna solution, the three-dimensional attitude of the pod is calculated by installing at least 3 GNSS antennas on the pod and setting at least 1 ground base station containing GNSS antennas on the ground.

Benefits of technology

The stable attitude measurement of the soft-stent pod is realized, which is suitable for the soft-stent pod system. When the number of GNSS antennas is sufficient, the deformation of the pod can be effectively calculated and the performance of the system can be improved.

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Abstract

The present invention provides a method for measuring the attitude of an aero-electromagnetic soft-support pod, comprising: antenna setting: at least three GNSS antennas are installed on the pod, and at least one ground base station including a GNSS antenna is set on the ground; dynamic differential calculation: one GNSS antenna of the pod is used as a mobile base station to calculate the spatial position of the remaining GNSS antennas of the pod relative to the mobile base station; static differential calculation: the spatial coordinates of the mobile base station are obtained by static differential calculation between the mobile base station and the ground base station; spatial attitude calculation: the spatial three-dimensional attitude of the pod is calculated using the spatial coordinate data of all GNSS antennas on the pod. The present invention calculates a stable pod attitude, which is suitable for a soft-support pod system; when there are many GNSS antennas, the deformation of the pod can be effectively calculated, thereby providing key data for attitude correction of the helicopter aero-electromagnetic system and improvement of pod performance.
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