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Related Concept Videos

Methods of Obtaining Topography01:25

Methods of Obtaining Topography

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Topography involves measuring and mapping land elevations, natural features, and artificial structures to create accurate representations of the terrain. Topographic surveying relies on traditional and modern methods, each with distinct advantages and limitations.Traditional Surveying Methods:Transit stadia surveys and plane table surveys were widely used traditional surveying methods. These techniques relied on instruments like theodolites and stadia rods for measuring distances and angles,...
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Topographic Surveying and Contours01:29

Topographic Surveying and Contours

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Topographic surveying is critical for documenting the Earth's surface, focusing on capturing elevations, slopes, and natural and man-made features. It is essential in construction planning, water resource management, and land-use analysis. The primary outcome of such surveys is a topographic map, which uses contour lines to visually represent the shape and slope of the terrain, providing valuable insights into the landscape's characteristics.Contour lines are fundamental to understanding the...
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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

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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...
27
Types of Global Positioning System Surveys01:30

Types of Global Positioning System Surveys

55
GPS surveying methods vary in application, accuracy, and data collection techniques, catering to diverse surveying and mapping needs. Static GPS, kinematic GPS, and real-time kinematic (RTK) surveying are widely used. Each technique offers distinct advantages.Static GPS involves placing one receiver at a known reference point and another at the target point. It collects exact positional data by observing multiple satellite ranges over an extended period, achieving centimeter-level accuracy for...
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Profile Leveling and Cross Sections01:26

Profile Leveling and Cross Sections

206
Profile leveling and cross-sections are surveying methods used to determine and document terrain elevations for infrastructure projects such as highways, railroads, canals, and pipelines. These methods provide data for earthwork planning and alignment of proposed routes.  Profile leveling involves measuring elevations along a fixed line to create a vertical terrain profile. A surveyor sets up a leveling instrument at the benchmark (BM) and records a backsight (BS) to determine the...
206
Common Leveling Mistakes and Errors01:17

Common Leveling Mistakes and Errors

71
A survey team is tasked with determining the elevation difference between points Point A and Point B, separated by uneven terrain. They use a leveling instrument and a leveling rod.Common MistakesMisreading the Rod: During a backsight reading at Point A, the instrumentman observes the rod partially obscured by tall grass. Instead of reading 1.135 m, they mistakenly record 1.735 m due to the misalignment of the crosshair with the wrong graduation. This error adds 0.600 m to all subsequent...
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Updated: Jun 26, 2025

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Technology Selection for Inline Topography Measurement with Rover-Borne Laser Spectrometers.

Conor Ryan1,2, Tobias Haist1, Gennadii Laskin3

  • 1Institute for Applied Optics (ITO), University of Stuttgart, 70569 Stuttgart, Germany.

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|May 11, 2024
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Summary
This summary is machine-generated.

This study enhances space rover laser spectroscopes with 3D topography for detailed geological analysis. Integrating 3D imaging provides crucial context for in situ sample composition and history.

Keywords:
3D imagingLIBSRaman spectroscopylaser spectroscopyrover payloadspace explorationtopography

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Area of Science:

  • Planetary Science
  • Geology
  • Optical Engineering

Background:

  • Laser spectroscopy is vital for in situ analysis of extraterrestrial samples.
  • Current space rovers lack comprehensive 3D morphological data for geological context.

Purpose of the Study:

  • To enhance compact laser spectroscopes on space rovers with 3D topography measurement.
  • To provide unprecedented contextual and morphological information for material characterization and geological history analysis.

Main Methods:

  • Outlining scientific, rover, and sample constraints for 3D integration.
  • Discussing candidate 3D technologies, including performance, weight, and power estimates.
  • Evaluating inline microscopic fringe-projection profilometry, incoherent digital holography, and multiwavelength digital holography.

Main Results:

  • 3D imaging offers a more complete spatial dataset than 2D imaging by assigning height information.
  • Performance, weight, and power consumption estimates guided technology down-selection for rover applications.
  • Inline microscopic fringe-projection profilometry, incoherent digital holography, and multiwavelength digital holography emerged as promising candidates.

Conclusions:

  • Adding 3D topography measurement significantly enhances laser spectroscope capabilities for space exploration.
  • The selected 3D technologies are suitable for integration into future rover-based laser spectrometer proposals.
  • This integration will improve the understanding of extraterrestrial geological histories through detailed morphological and compositional analysis.