Atmospheric polarized light orientation method used under cloudy weather condition
A technology of atmospheric polarization and weather conditions, used in astronomical navigation, measuring devices, instruments, etc., can solve the problems of sky polarization data, affecting the accuracy of orientation results, sunlight scattering differences, etc., to avoid inconsistent atmospheric polarization patterns and continuous effect of change
Active Publication Date: 2020-06-19
NAT UNIV OF DEFENSE TECH
View PDF8 Cites 3 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
However, in cloudy weather, due to the influence of cloud cover and flow, the scattering of sunlight by various regions in the atmosphere may be greatly different, which greatly affects the polarized light data of the sky observed by the optical compass, and then affects the data based on the atmosphere. Accuracy of Orientation Results for Polarized Modes
Method used
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
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0039] In order to make the purpose, technical solution and advantages of the present application clearer, the present application will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present application, and are not intended to limit the present application.
[0040] The atmospheric polarized light orientation method provided by the application under cloudy weather conditions can be applied to such as figure 1 On the carrier represented by point O in the application environment shown, the carrier can obtain various data required for calculating the heading angle of the carrier in real time, including solar azimuth, solar altitude, atmospheric polarization mode data, etc. Z in the picture b The point represents the zenith, the S point represents the sun, the P point represents the observation point, N represents the geographica...
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 PUM
Login to View More Abstract
The invention relates to an atmospheric polarized light orientation method and device used under a cloudy weather condition. The method comprises the following steps: defining a polarized light orientation model; obtaining an altitude angle, an azimuth angle, a polarization angle, a solar azimuth angle and an altitude angle of an observation point, and calculating a course angle of a carrier corresponding to the observation point according to the polarized light orientation model; defining a discrimination vector, taking one observation point as a reference point, calculating a norm differencevalue between the reference point and discrimination vectors of other observation points according to the course angle of the carrier corresponding to the reference point, and marking the observationpoint of which the norm difference value is smaller than a preset value as an inner point; and obtaining a reference point with the largest number of inner points, and calculating the course angle ofthe carrier according to the polarized light orientation model. By using the method, the atmospheric polarization mode with the widest distribution area under the cloudy weather condition can be screened out, the optimal carrier course angle is obtained according to the atmospheric polarization mode, and the problem that the atmospheric polarization mode is inconsistent and continuously changed due to cloud shielding and flowing, and the atmospheric polarization orientation accuracy is affected is avoided.
Description
technical field [0001] The present application relates to the field of bionic polarized light navigation, in particular to an atmospheric polarized light orientation method used in cloudy weather conditions. Background technique [0002] In the field of autonomous navigation, in addition to traditional inertial navigation technology and satellite navigation technology, bionic navigation has become a research hotspot in the field of autonomous navigation in recent years. Biological studies have shown that insects such as sand ants and bees can use atmospheric polarization patterns to navigate. Atmospheric polarization mode refers to the mode with stable temporal and spatial distribution formed by the scattering of sunlight through the atmosphere to generate polarized light, which contains important direction information. Bionic polarized light navigation is to imitate the principle of animals using the atmospheric polarization mode to orient themselves, observe the sky polar...
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 Application Information
Patent Timeline
Login to View More IPC IPC(8): G01C21/02G01C1/00
CPCG01C1/00G01C21/02
Inventor 范晨范颖何晓峰胡小平张礼廉毛军韩国良吴雪松罗凯鑫
Owner NAT UNIV OF DEFENSE TECH