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Mars EDL process large dynamic navigation test verification system and method

A test-proven, high-dynamic technology, applied in the field of navigation, can solve the problems of severe angular velocity oscillation, harsh working environment, and IMU interference in the parachute section, and achieve the effects of high reliability, simple test method and strong pertinence.

Active Publication Date: 2021-12-28
BEIJING INST OF CONTROL ENG
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Problems solved by technology

Compared with the lunar landing process, the Mars EDL process is very dynamic, especially the angular velocity of the parachute section is violently oscillated, which may even lead to gyro saturation, and the IMU is disturbed a lot during the whole process, and the working environment is harsh. Therefore, it is necessary to simulate the Mars EDL process. Attitude Motion of Dynamic Processes to Verify the Reliability and Effectiveness of IMU-Based Inertial Navigation

Method used

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  • Mars EDL process large dynamic navigation test verification system and method

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Embodiment Construction

[0037] In order to better understand the above technical solutions, the technical solutions of the present application will be described in detail below through the accompanying drawings and specific examples. It should be understood that the embodiments of the present application and the specific features in the examples are detailed descriptions of the technical solutions of the present application, and It is not a limitation to the technical solutions of the present application, and the embodiments of the present application and the technical features in the embodiments can be combined without conflict.

[0038] A kind of Mars EDL process large-scale dynamic navigation test verification system and method provided by the embodiment of the present application will be described in further detail below in conjunction with the accompanying drawings, and specific implementation methods can include (such as figure 1 ~ Shown):

[0039] The test system consists of a mathematical sim...

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Abstract

The invention discloses a Mars EDL process large dynamic navigation test verification system and method, and belongs to the technical field of navigation. According to the verification system, a mechanical rotary table is adopted to carry the IMU sensor to simulate the real attitude motion of the Mars lander in the EDL process through an attitude mapping method, and the key technology and related performance of inertial navigation can be effectively verified and evaluated by using the actual output data of the mechanical rotary table and the data acquired by the IMU; the system has the characteristics of simple test method, easy implementation, high reliability, strong pertinence and the like.

Description

technical field [0001] The invention relates to a Mars EDL process large dynamic navigation test verification system and method, belonging to the technical field of navigation. Background technique [0002] The Entry, Descent, and Landing (EDL) section of the Mars exploration mission is the last 6 or 7 minutes of the Mars probe’s journey of nearly 700 million kilometers. It is the key stage of the Mars surface exploration mission and the most difficult stage. EDL technology is also one of the key technologies for Mars surface exploration missions. From the time the Mars probe entered the Martian atmosphere at a speed of 20,000 kilometers per hour, it experienced a series of stages such as atmospheric deceleration, parachute drag, and power descent. During this period, only the IMU can be used for inertial navigation. It is estimated that there are no other measurements that can be corrected throughout the entire process. Once the attitude estimation error is too large, the...

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Application Information

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IPC IPC(8): B64G7/00B64G4/00G06F30/20G06F30/15G05D3/12
CPCB64G7/00B64G4/00G06F30/20G06F30/15G05D3/12Y02T90/00
Inventor 徐超黄翔宇李茂登胡锦昌孙赫婕王晓磊赵宇何健张琳周益
Owner BEIJING INST OF CONTROL ENG
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