An Autonomous Positioning Method Based on Observed Moonlight Atmospheric Polarization Mode

An atmospheric polarization mode and autonomous positioning technology, applied in astronomical navigation, navigation computing tools, etc., to achieve the effect of improving all-day performance, improving autonomy and anti-interference

Active Publication Date: 2022-03-08
BEIHANG UNIV
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Problems solved by technology

[0005] The problem to be solved by the present invention is: to overcome the defect that the existing polarization positioning technology can only realize carrier positioning based on the atmospheric polarization mode of sunlight in the daytime, and cannot work all day

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  • An Autonomous Positioning Method Based on Observed Moonlight Atmospheric Polarization Mode
  • An Autonomous Positioning Method Based on Observed Moonlight Atmospheric Polarization Mode
  • An Autonomous Positioning Method Based on Observed Moonlight Atmospheric Polarization Mode

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Embodiment Construction

[0031] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0032] Such as figure 1 Shown, the concrete realization steps of the present invention are as follows:

[0033] (1) Obtain the moonlight polarization degree d of multiple groups of nighttime sky observation points through the moonlight atmospheric polarization sensor i and polarization azimuth i=1,2,...,n, n is the total number of sky observation points that the sensor can measure, and then set the polarization threshold d according to the mean va...

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Abstract

The invention relates to an autonomous positioning method based on observing the atmospheric polarization mode of moonlight. First, the polarization degree and polarization azimuth angle information of the moonlight in the night sky is obtained by a moonlight atmospheric polarization sensor; secondly, the polarization degree threshold is determined according to the average value of the moonlight polarization degree at each point in the sky. And screen out the sky observation points that can be used for calculation; then use the polarization degree and polarization azimuth angle of the moonlight in the night sky to solve the current moon altitude angle; finally use two fixed time interval moon altitude angles to calculate the carrier position. This method has the ability of autonomous positioning at night, which enhances the ability of polarization positioning technology to work around the clock.

Description

technical field [0001] The invention relates to an autonomous positioning method based on observing the atmospheric polarization mode of moonlight, which can realize autonomous positioning by using the moonlight polarization information in the nighttime environment. The invention does not rely on satellite signals and other electromagnetic signals, is a passive autonomous positioning method, and can be applied to ground robots, drones, ships and other carriers to improve their autonomous positioning capabilities in nighttime environments. Background technique [0002] Positioning the carrier is the basis for realizing navigation. At present, satellite navigation is the most widely used carrier positioning technology, which can obtain the absolute position of the carrier and provide accurate carrier latitude and longitude information and altitude information, etc., but it is extremely vulnerable to electromagnetic interference and cause the satellite signal to lose lock, whic...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01C21/02G01C21/20
CPCG01C21/02G01C21/20
Inventor 郭雷李浩天杨健乔建忠
Owner BEIHANG UNIV
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