Satellite Imagery

DigitalGlobe GeoEye Satellite Image

 

Satellite imagery is a powerful tool used in a wide range of industries for observation and remote sensing purposes.

The TCarta Team has focused on bridging the gap between technical understanding of the remote sensing and satellite industry and real-world applications. Earth Observation satellites can be applied to very powerful end user applications.

While TCarta use a variety of different satellite images to derive Earth Observation products, we also act as re-sellers for both Airbus and DigitalGlobe imagery and can provide raw satellite imagery. TCarta offers clients non-biased advice to select the best imagery to suit any technical requirements and budgets.

 

Background

Digital Surface Model, 2m resolution

 

TCarta offers clients access to archived imagery and also works with imagery suppliers to task new collection of imagery. Satellite imagery provides more information than just pixels and is a major asset to the following activities:

  • Disaster Response Planning
  • Urban Planning - Project Visualization
  • Media and Gaming Visualization
  • Environmental Impact Assessment
  • Bathymetry and Seafloor Mapping
  • Agriculture and Vegetation Monitoring and Assessment
  • Pre- or Post-Disaster Assessment of Natural Disasters
  • Construction & Civil Engineering
  • Identifying and Analyzing Archaeological Sites

Why choose Satellite imagery?

  • Large areas are covered with similar resolutions to aerial photography
  • Collection can be made over unsafe regions, with no permits required
  • Near real-time data can be collected by satellite
  • Minimal environmental impact compared to land or marine survey

Why choose TCarta as your Satellite Imagery provider?

  • Sensor Agnostic - Clients receive a true representation of all sensors, currency and resolutions, allowing you to choose the optimum data to enhance your project
  • Experience - Dedicated account managers with over 10 years of experience
  • Please contact TCarta today with an area of interest and an indication of your requirements, and we will be happy to provide you with a tailored quotation.

Remote Sensing

Remote sensing is the process of monitoring and detecting the physical characteristics of an area by measuring its reflected and emitted radiation at a distance from the targeted area. TCarta specializes in remote sensing using earth observation (EO) satellites. EO satellites detect and record the radiation reflected or emitted from the surface of the earth.

Remotely sensed images of the earth have many applications. TCarta has direct project experience in applying remote sensing to numerous end uses. These include:

Vegetation mapping, Abu Dhabi, derived from 8 band DigitalGlobe WorldView imagery

 
  • Impact Assessments
  • City Planning
  • Media and Gaming Visualization
  • Oil Spill Response
  • Bathymetry and Seafloor Mapping
  • Vegetation Monitoring and Assessment
  • Natural Disasters Assessments
  • Engineering
  • Identifying and Analyzing Archaeological Sites

Satellite User Guide

To assist our customers and end users, the following guide provides information regarding the satellites that we have utilized and applied through our numerous and varied project history.

Satellite Operator Technical Summary
WorldView-3 DigitalGlobe With 8-multi-spectral bands at 1.2 meter resolution, and 1 panchromatic band at 0.3 meter resolution, this represents the highest resolution and most powerful earth observation satellite commercially available. The satellite is sun-synchronous offering the possibility of revisiting specific locations. Image strips are acquired in a snap shot, and requests can be made to collect satellite images in targeted locations (known as “Tasking”). The nature of hardware on board the satellite means that images are available with very high spatial accuracies (3.5 meters CE90), and very high spectral accuracies. TCarta has a long history of applying this satellite for deriving a wide range of products, including Satellite Derived Bathymetry, Benthic Mapping, Satellite Vegetation Monitoring, Land Use Land Cover Mapping, and Air Quality Modelling.
WorldView-2 DigitalGlobe WorldView-2 provides 8-multi-spectral bands at 1.6 meter resolution, and 1 panchromatic band at 0.4 meter resolution. The satellite was launched in 2009, and has been capturing images daily. This represents a vast global archive of data can be accessed. As with World-View-3 the satellite is sun-synchronous offering the possibility of revisiting specific locations. Image strips are acquired in a snap shot, and requests can be made to collect satellite images in targeted locations (known as “Tasking”). TCarta has a long history of applying this satellite for deriving a wide range of products, including Satellite Derived Bathymetry, Benthic Mapping, Satellite Vegetation Monitoring, Land Use Land Cover Mapping, and Air Quality Modelling .
Pleiades Airbus Pleiades operates in a constellation of 2 satellites meaning that large sections of the globe can be acquired quickly and frequently. TCarta has deployed Pleiades for satellite derived bathymetry, satellite benthic mapping, and digital elevation model
RapidEye Planet Rapideye operates as a constellation of 5 satellites with 6.5 meter pixel resolution and 5 multispectral bands. TCarta has deployed RapidEye for satellite benthic mapping and satellite vegetation monitoring. RapidEye satellites include the Red-Edge band which can monitor changes in vegetation chlorophyll content, making it a keyt tool in vegetation health monitoring programmes. RapidEye has a daily global coverage revisit frequency.
Sentinel-2 European Space Agency Designed primarily to deliver imagery and data to the Copernicus programme, Sentinel-2 offers a wide-swath multi-spectral imager. Sentinel-2 comprises a constellation of 2 satellites operating 180 degrees apart and cover all of the land, island and coastal water every 5 days at the equator. The 13 spectral bands within Sentinel-2 are ideal for mapping agricultural and forestry requirements.
LandSat 8 USGS/NOAA Landsat 8 is a single constellation satellite which offers a re-visit frequency of the entire globe every 16 days. Landsat 8 operates in the visible, near-infrared, short wave infrared, and thermal infrared spectrums, a total of nine spectral bands. LandSat-8 boasts a deep blue visible channel (band 1) specifically designed for water resources and coastal zone investigation.
MODIS/MERIS NASA MODIS is a very high orbit satellite that has a global re-visit frequency of every 1-2 days. Boasting 36 spectral bands, MODIS is a key satellite in the measurement of aerosols in the earth′s atmosphere. The high re-visit frequency of MODIS means the sensor measures the percent of the planet’s surface that is covered by clouds almost every day.