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Related Concept Videos

Attitudes01:54

Attitudes

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Attitude is our evaluation of a person, an idea, or an object. We have attitudes for many things ranging from products that we might pick up in the supermarket to people around the world to political policies. Typically, attitudes are favorable or unfavorable: positive or negative (Eagly & Chaiken, 1993). And, they have three components: an affective component (feelings), a behavioral component (the effect of the attitude on behavior), and a cognitive component (belief and knowledge;...
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Group polarization is the strengthening of an original group attitude following the discussion of views within a group (Teger & Pruitt, 1967). That is, if a group initially favors a viewpoint, after discussion the group consensus is likely a stronger endorsement of the viewpoint. Conversely, if the group was initially opposed to a viewpoint, group discussion would likely lead to stronger opposition.
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The mode is one of the commonly used measures of a central tendency. It is defined as the most frequent value in a data set.
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Related Experiment Video

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Automation of Mode Locking in a Nonlinear Polarization Rotation Fiber Laser through Output Polarization Measurements
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Attitude calculation method based on full-sky atmospheric polarization mode.

Jun Liu1, Donghua Zhao1, Chenguang Wang1

  • 1Key Laboratory of Instrumentation and Science and Dynamic Measurement, Ministry of Education, School of Instrument and Electronics, North University of China, Taiyuan 030051, People's Republic of China.

The Review of Scientific Instruments
|February 3, 2019
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Summary
This summary is machine-generated.

This study presents a novel bio-inspired navigation system using polarized skylight to determine a vehicle's attitude. The method accurately calculates heading, pitch, and roll angles, demonstrating feasibility for advanced navigation.

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Area of Science:

  • Optics and Photonics
  • Robotics and Control Systems
  • Bio-inspired Engineering

Background:

  • Insects utilize polarized skylight for navigation, inspiring bio-inspired navigation systems.
  • Vehicle attitude determination is crucial for navigation and control systems.
  • Atmospheric polarization patterns provide directional cues.

Purpose of the Study:

  • To develop a method for calculating vehicle attitude using full-sky atmospheric polarization.
  • To determine heading, pitch, and roll angles from polarization data.
  • To validate the attitude calculation method through simulations and experiments.

Main Methods:

  • Analyzing the structural characteristics of full-sky atmospheric polarization.
  • Calculating solar position and zenith point from polarization data.
  • Deriving heading, pitch, and roll angles using geometric principles and sensor data.

Main Results:

  • Accurate determination of heading angle by subtracting solar meridian angles.
  • Precise calculation of pitch and roll angles using zenith point coordinates.
  • Experimental validation confirming high accuracy and effectiveness of the attitude calculation method.

Conclusions:

  • The proposed method effectively calculates vehicle attitude using polarized skylight.
  • This bio-inspired approach offers a feasible and accurate solution for navigation systems.
  • The study highlights the potential of polarization-based navigation in various applications.