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Related Concept Videos

Design Example: Identifying the Locations of Monuments in the Field Using Global Positioning System Device01:30

Design Example: Identifying the Locations of Monuments in the Field Using Global Positioning System Device

Surveyors use Global Positioning System (GPS) technology to measure the precise location and elevation of points on Earth. In a recent survey, GPS receivers were used to determine the coordinates and elevations of two park monuments. The process involved careful mission planning, data collection, and correction to ensure accuracy. The survey began with mission planning to identify optimal satellite visibility and minimize Position Dilution of Precision (PDOP). A geodetic control point served as...
Design Example: Traverse Angle Computations01:25

Design Example: Traverse Angle Computations

Traverse angle computations are a critical component of surveying, used to compute the internal angles within a closed traverse. A traverse consists of a series of connected lines forming a closed loop, often used for land boundary delineation or mapping. Calculating the internal angles ensures accuracy in the traverse geometry and is essential for checking survey data integrity.The process begins with known azimuths and bearings of the traverse sides. Internal angles at each vertex are...
Field Application of Global Positioning System01:28

Field Application of Global Positioning System

The Global Positioning System (GPS) has become an indispensable tool in fieldwork, offering unparalleled precision and efficiency for surveying, navigation, and infrastructure development. By harnessing signals from a constellation of satellites, GPS receivers determine the location of objects with remarkable speed and accuracy, often completing calculations within a second.Advantages of Modern GPS TechnologyContemporary GPS receivers are designed to meet the practical demands of field...
Depth Perception and Spatial Vision01:15

Depth Perception and Spatial Vision

Depth perception is the ability to perceive objects three-dimensionally. It relies on two types of cues: binocular and monocular. Binocular cues depend on the combination of images from both eyes and how the eyes work together. Since the eyes are in slightly different positions, each eye captures a slightly different image. This disparity between images, known as binocular disparity, helps the brain interpret depth. When the brain compares these images, it determines the distance to an object.
Migration00:53

Migration

Migration is long-range, seasonal movement from one region or habitat to another. This common strategy, carried out by many different organisms around the world, is an adaptive response that typically corresponds to changes in an organism’s environment, like resource availability or climate. Migrations can involve huge groups of thousands of animals as well as single individuals traveling alone and can range from thousands of kilometers to just a few hundred meters.
Adjusting a Traverse01:12

Adjusting a Traverse

In the site survey of a four-sided traverse, internal angles are essential to ensure geometric accuracy. The survey revealed that the sum of the measured internal angles was 359 degrees and 48 minutes, which is 12 minutes less than the expected 360 degrees. This discrepancy signals an error likely arising from measurement inaccuracies during the fieldwork.To rectify this error, the adjustment process involved distributing the 12-minute shortfall equally across the four internal angles. By...

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Related Experiment Video

Updated: Jun 5, 2026

Techniques for Investigating the Anatomy of the Ant Visual System
08:56

Techniques for Investigating the Anatomy of the Ant Visual System

Published on: November 27, 2017

How might ants use panoramic views for route navigation?

Andrew Philippides1, Bart Baddeley, Ken Cheng

  • 1School of Informatics, University of Sussex, Falmer, Brighton BN1 9QJ, UK.

The Journal of Experimental Biology
|January 14, 2011
PubMed
Summary

Desert ants use simple visual strategies, like skyline heights, for robust navigation. Stored visual compasses are effective for homing and route guidance in complex environments.

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SwarmSight: Real-time Tracking of Insect Antenna Movements and Proboscis Extension Reflex Using a Common Preparation and Conventional Hardware
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SwarmSight: Real-time Tracking of Insect Antenna Movements and Proboscis Extension Reflex Using a Common Preparation and Conventional Hardware

Published on: December 25, 2017

Related Experiment Videos

Last Updated: Jun 5, 2026

Techniques for Investigating the Anatomy of the Ant Visual System
08:56

Techniques for Investigating the Anatomy of the Ant Visual System

Published on: November 27, 2017

SwarmSight: Real-time Tracking of Insect Antenna Movements and Proboscis Extension Reflex Using a Common Preparation and Conventional Hardware
08:13

SwarmSight: Real-time Tracking of Insect Antenna Movements and Proboscis Extension Reflex Using a Common Preparation and Conventional Hardware

Published on: December 25, 2017

Area of Science:

  • Animal Behavior
  • Sensory Ecology
  • Insect Navigation

Background:

  • Insects exhibit sophisticated visual navigation behaviors in natural environments.
  • Understanding insect navigation requires integrating behavioral studies with sensory ecology.
  • Desert ant navigation is a well-studied model for insect homing and route guidance.

Purpose of the Study:

  • To analyze ant-perspective views of a natural habitat.
  • To determine the effectiveness of visual navigation strategies in complex environments.
  • To investigate the role of skyline information and stored views in ant navigation.

Main Methods:

  • Analysis of habitat views from an ant's perspective.
  • Modeling of visual strategies for homing and route guidance.
  • Evaluation of skyline height data as a navigational input.

Main Results:

  • Parsimonious visual strategies are effective for navigation over significant distances, even in cluttered environments.
  • Skyline heights alone can provide sufficient input for effective navigation.
  • Stored views function as a simple, robust visual compass mechanism for route guidance.

Conclusions:

  • Simple visual strategies, particularly those using skyline information, are highly effective for insect navigation.
  • Stored views represent a viable and robust mechanism for ant navigation and homing.
  • Sensory ecology insights are crucial for understanding complex navigational behaviors in insects.