Pulsar/starlight angle combination navigation method of high orbit satellite
A technology of starlight angular distance and high-orbit satellites, which is applied in the field of navigation and can solve the problems that high-orbit satellites are difficult to achieve autonomous positioning.
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Embodiment Construction
[0096] Such as figure 1 As shown, an autonomous navigation algorithm for medium and high orbits based on pulsar and starlight angular distance, the specific implementation steps are as follows:
[0097] (1) Establish orbital dynamics equations for near-Earth satellites;
[0098]In the geocentric inertial system J2000.0, the orbital dynamics equation of the near-Earth satellite is established as
[0099]
[0100] Among them, x=[r T ,v T ] T is the state vector of the spacecraft, w=[w r T w v T ] T is dynamic model noise, which can be modeled as zero-mean white Gaussian noise. The variance matrix of this noise is Q. a=a TB +a NS +a T +a H.O.T is the acceleration experienced by the spacecraft, including the following items.
[0101] 1)a TB =-μ E r / |r| 3 is the two-body gravitational acceleration of the spacecraft, where μ E is the gravitational constant of the earth.
[0102] 2) is the non-spherical gravitational perturbation of the earth. UNSE can be e...
PUM
Abstract
Description
Claims
Application Information
- R&D Engineer
- R&D Manager
- IP Professional
- Industry Leading Data Capabilities
- Powerful AI technology
- Patent DNA Extraction
Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.
© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com