Remote sensing is an object or phenomenon related distanced information gathering, without any contact with them (at a distance). Now, the term refers to the technologies of aerial data acquisition, based on the use of sensors enabled to recognize objects on the earth's surface (and on / under the water surface and in the atmosphere), emitting or reflecting waves in different bands. Remote sensing can be divided into two categories - passive and active. In passive sensing (perception of the signal), the sensor captures the signal emitted or reflected by an object (mainly sunlight).

These sensors are cameras (including digital), thermal imagery device, passive sonars, radiometers, seismographs, etc. When in the active mode, the sensor emits a signal, and then registers its reflection from the object. These sensors include laser scanners, radars and sonars.

The main characteristics of the RSD:

  • Spatial;
  • Spectral;
  • Radiometric;
  • Temporal resolution.

 

Data processing includes:

  • Laser scanning points by-layer classification ("the land - not the earth," "hydrology", "roads", "railways", "vegetation", "buildings", "wires", " support structures", "contact network" and etc.);
  • Creation of 3-D vector models of the surveyed objects;
  • Creation of terrain relief models;
  • Creation of a single orthomosaic steping-out  pattern for the entire mapping range;
  • Creation of a digital terrain model;
  • Creation of spreadsheets of thematic processing.

 

Integration of terrain and vector objects3D-models
Integration of terrain and vector objects3D-models

Integration of terrain and vector objects3D-models

 

Processed remote data allows quick and efficient fulfillment of the following tasks:

  • Construction of road axis.
  • Automatic construction of the existing and projected railway profile.
  • Railway track construction modeling.
  • Construction of the corridor and all required sections.
  • Automatic calculation of the quantity of excavation works (fill/cut).
  • 3D-model dynamics.
  • Multiple types of standard components, the ability to create the user’s own designs.
  • Fast  geometry design based on local design criteria (the projected  interrelationships remain valid for the optimization of routes - such as piecemeal and at the intersection point);
  • Obtaining design horizon contours, building sections, etc.

 

Textured orthophotomaps triangulation terrain model. Location - Republic of Tuva, south-west of the town of Kyzyl
Textured orthophotomaps triangulation terrain model. Location - Republic of Tuva, south-west of the town of Kyzyl

Textured orthophotomaps triangulation terrain model. Location - Republic of Tuva, south-west of the town of Kyzyl

 
TIN (triangulated irregular network) model presented as a wireframe.
TIN (triangulated irregular network) model presented as a wireframe.

TIN (triangulated irregular network) model presented as a wireframe.



Remote sensing data (RSD) Remote sensing data (RSD) Remote sensing data (RSD)
Remote sensing data (RSD) Remote sensing data (RSD) Remote sensing data (RSD)
Remote sensing data (RSD) Remote sensing data (RSD) Remote sensing data (RSD)
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