An autonomous navigation method for star sensors suitable for high mobility vehicles

A star sensor and autonomous navigation technology, applied in the field of astronomical navigation, to avoid calculation timeout or attitude loss, improve attitude update rate, and improve attitude capture speed.

Inactive Publication Date: 2016-08-17
CHANGCHUN INST OF OPTICS FINE MECHANICS & PHYSICS CHINESE ACAD OF SCI
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Problems solved by technology

[0004] In order to solve the technical problem that existing star sensors are used for independent and autonomous navigation of high-mobility carriers, the present invention provides a method for autonomous navigation of star sensors suitable for high-mobility carriers. The method has the characteristics of simple implementation and high navigation accuracy.

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  • An autonomous navigation method for star sensors suitable for high mobility vehicles
  • An autonomous navigation method for star sensors suitable for high mobility vehicles
  • An autonomous navigation method for star sensors suitable for high mobility vehicles

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specific Embodiment approach 1

[0019] Specific implementation mode 1. Combination Figure 1 to Figure 3 Illustrate this embodiment, be applicable to the star sensor navigation method of high-mobility carrier, this method is realized by the following steps:

[0020] Step 1: Initial attitude capture; perform all-day autonomous star map recognition on the star map captured by the star sensor, calculate the initial orientation of the star sensor's boresight, and complete the initial attitude capture. The recognition algorithm in this embodiment is not limited to subgraph isomorphism or pattern recognition or improved algorithms, such as triangle recognition, matching group method, grid algorithm, singular value decomposition and so on. The star sensor capable of independent navigation generally adopts a large field of view structure, a multi-star vector attitude determination method, and a low magnitude detection threshold. In this embodiment, the navigation star counting method can be used.

[0021] Step 2: I...

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Abstract

The invention discloses a star sensor autonomous navigation method suitable for a high maneuvering carrier, relates to the technical field of celestial navigation, and solves the disadvantage in the prior art that a star sensor adopts the autonomous navigation of the high maneuvering carrier. The star sensor autonomous navigation method comprises the steps of firstly enabling the star sensor to recognize a capture initial posture by adopting an all-day autonomous star map, then recognizing the original pointing partial star map by utilizing initial attitude information, and calculating the posture to obtain a moving angle speed; combining the prior information obtained in the first and second steps, forecasting the posture and the star point position of the next sampling time, and rapidly forecasting the tracking recognizing mode; calculating a three-axis posture angle of the star sensor in an inertial frame according to a recognizing result, and finally calculating the three-axis posture angle of the carrier according to a matrix of the star sensor arranged on the carrier, thus finishing the independent navigation of the carrier. The star sensor autonomous navigation method provided by the invention has the characteristics that the realization is simple, and the continuous, high precision navigation data and the like are autonomously provided for the high maneuvering carrier.

Description

technical field [0001] The invention relates to the technical field of celestial navigation, in particular to an autonomous navigation method of a star sensor suitable for high-mobility carriers. Background technique [0002] The star sensor is an attitude sensor with a star as the measurement target. Since the 1990s, with the application of large area array CCD and CMOS devices, the large field of view star sensor can accurately provide its own relative to the inertial coordinate system based on the multi-star vector without any external reference information. According to the installation matrix of the star sensor on the carrier, the attitude information of the carrier relative to the inertial coordinate system is obtained. Because the new generation of star sensors has the characteristics of high precision, strong autonomy, and good concealment, it has been widely concerned and researched at home and abroad. [0003] The star sensor with independent navigation function ...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01C21/02
CPCG01C21/025
Inventor 张磊何昕魏仲慧郭敬明王东鹤梁国龙
Owner CHANGCHUN INST OF OPTICS FINE MECHANICS & PHYSICS CHINESE ACAD OF SCI
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