Eureka AIR delivers breakthrough ideas for toughest innovation challenges, trusted by R&D personnel around the world.

Polarization navigation information detection sensor with independent channels

A polarization navigation and information detection technology, applied in navigation, mapping and navigation, navigation calculation tools, etc., can solve the problems of complex calculation process, many detection channels, and low accuracy.

Active Publication Date: 2013-10-23
HEFEI UNIV OF TECH
View PDF6 Cites 12 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There are many detection channels, the hardware circuit is complex, the integration level is generally not high, and the calculation process is complicated. In practical applications, it is difficult to ensure that the polarization direction of each polarized light acquisition channel is consistent with the theoretical value. At the same time, the gain consistency of each channel cannot be guaranteed, resulting in polarization Navigation information detection sensors have inevitable quadrature errors and gain difference errors of each channel, making their accuracy generally not high

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 more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Polarization navigation information detection sensor with independent channels
  • Polarization navigation information detection sensor with independent channels
  • Polarization navigation information detection sensor with independent channels

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0034] In this example, if figure 1 As shown, the independent channel polarization navigation information detection sensor includes a polarized light acquisition module, an unbiased channel, and a signal processing and computing module;

[0035] The polarized light acquisition module is composed of three independent polarization acquisition channels, each polarization acquisition channel is composed of a filter, a polarizer and a photodiode; the photodiode collects the light through the filter and polarizer and outputs a polarization current signal To the signal processing and arithmetic module.

[0036] The unbiased channel is composed of a filter and a photodiode; the photodiode of the unbiased channel collects the light passing through the filter and outputs a reference current signal to the signal processing and operation module; the reference current signal is only consistent with the received signal of the unbiased channel It is related to the light intensity, and the r...

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

No PUM Login to View More

Abstract

The invention discloses a polarization navigation information detection sensor with independent channels, and is characterized in that: the sensor includes a polarized light acquisition module, an unbiased channel, and a signal processing and calculation module; the polarized light acquisition module includes three mutually independent polarization detection channels for acquiring polarized light information; the unbiased channel acquires a light output standard current signal and provides a standard for automatic gain control; the signal processing and calculation module completes processing, amplification, conversion and calculation of the signal to obtain polarization navigation information. The sensor can effectively improve the accuracy of the atmospheric polarization navigation information detection.

Description

Technical field: [0001] The invention relates to the technical field of intelligent information acquisition and navigation, in particular to an independent channel polarization navigation information detection sensor. Background technique: [0002] Sunlight itself is a natural light source, but it is scattered and reflected by particles in the atmosphere during atmospheric transmission, resulting in polarized light. Sunlight with different polarization directions and different polarization degrees forms a specific polarization state distribution, that is, the atmospheric polarization mode. Atmospheric polarization mode is closely related to geographical location, sun position, atmospheric environment, weather conditions, and even ground environment. It mainly includes parameters such as atmospheric polarization degree and polarization direction, which contain important navigation information. [0003] Professor Rüdiger Wehner of the University of Zurich in Switzerland and h...

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
no application Login to View More
IPC IPC(8): G01C21/00G01C21/20
Inventor 范之国李逸博高隽王昕王波
Owner HEFEI UNIV OF TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Eureka Blog
Learn More
PatSnap group products

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