Planet entering section navigation filtering method based on layered atmosphere model

A technology of atmospheric model and entry section, which is applied in the field of deep space exploration, can solve the problems of limited radio beacons, and achieve the effect of ensuring accuracy and real-time performance
CN103453907AInactive Publication Date: 2013-12-18BEIJING INSTITUTE OF TECHNOLOGYGY
11 Cites 13 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
BEIJING INSTITUTE OF TECHNOLOGYGY
Publication Date
2013-12-18
Estimated Expiration
Not applicable · inactive patent

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
  • Figure 3
    Figure 3
Patent Text Reader

Abstract

The invention relates to a planet entering section navigation filtering method based on a layered atmosphere model and belongs to the technical field of deep space detection. The method provided by the invention takes an output of an inertial measurement unit (IMU) as an external measuring value on the basis of a dead reckoning navigation method and simultaneously introduces a multilayered atmosphere model to establish a planet entering section measurement equation and construct a state estimating device; filtering estimation is carried out on positions, speeds and direction information of a landing device; resolving time of navigation data is short and real-time requirements of self navigation are met; compared with a single dead reckoning navigation method, the influences on the state of the landing device by initial deviation can be corrected and the navigation precision is improved.
Need to check novelty before this filing date? Find Prior Art

Description

technical field

[0001] The invention relates to a navigation filtering method for a planetary entry segment based on a layered atmospheric model, and belongs to the technical field of deep space exploration. Background technique

[0002] Mars fixed-point landing detection is an important means to obtain more valuable scientific discoveries, and the acquisition of navigation information during the Martian atmosphere entry stage is one of the necessary conditions for accurate landing detection. During the entry into the Martian atmosphere, in order to prevent the probe from being damaged by aerodynamic heat, the entire lander was encapsulated in a heat shield, which caused the optical sensor to fail to work normally. delay, it is difficult to perform real-time control. Inertial navigation has become the main navigation method currently relied on for the Mars atmosphere entry phase.

[0003] In the past, the exploration missions that successfully landed on Mars only used the ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More