High precision polarized light navigating instrument

Abstract

The invention discloses a high-precision polarized navigator, which comprises the following parts to form the polarized receiving system: first polarized lens cone, second polarized lens cone, third polarized lens cone and polarized lens cone, wherein the output direction of polarized receiving system contains light-beam deflecting device, polarized adjustment system and photoelectric detector array sequently, which connects lock-in amplifying circuit, logarithmic amplifying circuit, data gathering card and computer after the photoelectric detector array; the photoelectric detector array transmits the received two paths of polarized signal into electrical signal, which is disposed by computer to realize the navigation of moving object through logarithmic amplifying circuit and lock-in amplifying circuit. The invention simplifies the structure with good reliability and high precision, which is fit for real-time navigation of traffic tool and moving object.

Description

technical field [0001] The invention relates to the navigation of vehicles and moving objects such as ships, airplanes, vehicles and robots, in particular to a high-precision polarized light navigator that directly uses polarized light in the sky for navigation. Background technique [0002] Although sunlight itself is not polarized light, when it penetrates into the atmosphere, it is scattered by atmospheric molecules or other particles, and becomes polarized light that only vibrates in a certain direction or that the vibration in a certain direction is dominant. Since the polarization direction of the scattered light at any point in the sky is perpendicular to the plane formed by the sun, the observer and the point, according to any sun position, people can determine the polarized light picture of the entire sky. Conversely, even on cloudy days or when the sun is below the horizon, the sun's position can be deduced from the polarized sky view. Cooperating with the time re...

AI Technical Summary

Problems solved by technology

[0008] (1) It is necessary to measure the light intensity values ​​of several special azimuths (0°, 45°, 90°) in advance, which introduces positioning angle errors and directly affects the measurement accuracy of azimuth angles;

[0009] (2) Since the system adopts the sky scanning method, the scanning device is added, the measurement speed is slow, the system cost and volume are increased, and the reliability of the system is reduced

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