Radar DSMs

Satellite imagery is becoming increasingly important for creating Digital Surface Models (DSM) covering countries, continents or even the global entire landmass. If a scene is recorded from two or more viewpoints, DSMs can be extracted from the overlapping images. A DSM consists of a set of geo-referenced points, often fixed on a regular raster, with each cell assigned a height value and depicting trees, building roofs and other manmade objects on the Earth's surface. In contrast, the height values of a Digital Elevation Model (DEM) refer to the bare ground and are derived from a DSM using semi-automatic filtering to... (read more)
2011-07-25 04:29:01

Space Radar Partnership

Lockheed Martin and Thales Alenia Space of Italy are forming a strategic partnership to jointly develop and deliver a new family of space-based remote sensing systems for customers around the world. The joint business agreement leverages each company's resources, talents, programs and customer partnerships will allow Lockheed Martin Space Systems and Thales Alenia Space to expand their respective remote sensing product areas and businesses.     Thales Alenia Space develops, manufactures, and delivers turn-key remote sensing systems, including satellites, platforms and payloads that feature Synthetic Aperture Radars for civilian, defense and dual-use applications. Lockheed Martin Space Systems Company has a... (read more)
2008-12-30 09:19:19

Radar Mapping Services Contract

Intermap (USA) has announced a contract award of USD3.6 million from Dewberry & Davis for the third phase expansion of its previously announced airborne radar mapping services project in Alaska. Additional contract funding for this project may occur at future dates. Intermap is using its proprietary Interferometric Synthetic Aperture Radar (IFSAR) technology to collect orthorectified radar imagery and high resolution elevation data for an area of Alaska that has never been mapped to this level of accuracy. The elevation data and imagery collected by Intermap will be used in economic development, infrastructure development and homeland security applications. Due to persistent... (read more)
2012-08-01 12:08:44

Satellite Radar Interferometry

Interferometric Synthetic Aperture Radar (InSAR), an active remote sensing technique that acquires images of the Earth, is a beautiful and powerful technology for surface deformation modelling and elevation mapping. However, InSAR also has the reputation of being a complex technology which is challenging to understand. This edition of Technology in Focus aims to explain the concept of InSAR. Synthetic Aperture Radar (SAR) acquires images of the Earth in the microwave spectrum with wavelengths in the order of centimetres. Electromagnetic waves of this size can penetrate clouds, which makes SAR an all-weather remote sensing system operating day and night. SAR instruments for... (read more)
2016-05-02 10:28:49

Building Radar Becomes Copernicus Master

Tuesday 20 October 2015 was certainly a day to remember for the Munich-based start-up Building Radar, which provides a global, satellite-based online database for new construction projects. The company secured two prizes in the Copernicus Masters international Earth observation competition. Building Radar first won the European Space Imaging High-Res Urban Challenge and then went on to be named the overall winner, becoming this year's Copernicus Master. The start-up Building Radar has developed an integrated solution for VHR satellite imagery within a solid business model. It is focused on providing automated monitoring and detection services for the construction industry, whereby satellite imagery... (read more)
2015-10-26 10:29:54

36 Years of Radar Vision

ESA has recently recovered imagery from the oldest synthetic aperture radar (SAR) in space, providing renewed views of a changing Earth. The retreat of two large glaciers in southeast Greenland over a 36-year period is evident in the image which compares data from three generations of radar missions – Seasat, ERS and Sentinel-1. The preliminary analysis shows that the effects of climate change on the world’s second largest ice sheet have had a major impact over the past three decades. The glaciers show significant retreat, with the upper glacier receding by about 5.5km over the past 36 years. This melt... (read more)
2015-02-11 08:30:00

TanDEM-X Radar Satellite Deployed

The TanDEM-X radar satellite designed and built by Astrium (Germany) was successfully launched early this morning. At 04:14 hours CEST (08:14 hours local time), a Russian Dnepr launch vehicle carrying the huge satellite, which has a launch mass of more than 1.3 metric tons and measures five metres in length, lifted off from the Baikonur Cosmodrome in Kazakhstan. Around ten minutes later, the satellite separated from the launch vehicl e's upper stage. The first signals from the satellite were received by the "Troll" ground station in Antarctica at 04.15 hours. TanDEM-X will operate in tandem with its almost identical twin,... (read more)
2010-06-21 03:10:02

Envisat Radar for Aircraft Monitoring

Entrepreneurs at ESA's Business Incubation centre in the Netherlands have used radar technology from the Envisat remote-sensing satellite to develop a compact, high-resolution radar that can monitor land and buildings from small aircraft. The radar can monitor structures such as dams, harbours, canals and buildings, leading to maps for urban planning, territory surveillance and cadastral updating. Several flights over the same location can spot changes between pictures, revealing ground movements that could affect structures.   Because of the compact structure of the system, it can be mounted on very small unmanned aircraft or on single-engine aircraft such as the Cessna... (read more)
2009-07-28 09:25:35

IXSEA for Mobile Radar Application

EADS Defence & Security (DS), Germany, has choosen IXSEA for a navigation and positioning application and has purchased eight ADVANS LYRA units; further orders are expected to follow. The units will replace obsolete mechanical orientation technology in vehicles designed to carry mobile radar systems. Very soon after the vehicle has come to a stop, the operator will be provided with accurate heading and attitude information with which to orient the radar system.Incorporating IXSEA's industry-leading fibre-optic gyroscope technology, ADVANS LYRA units are maintenance-free, highly reliable, robust and very easy to install and use, all prime requirements in more-critical situations. (read more)
2010-08-19 12:42:23

Mapping Using Polarimetric Radar Imaging

Synthetic Aperture Radar (SAR) is becoming more and more requested in the commercial and scientific world, especially considering the latest developments toward compact, high-resolution and cost-effective sensors. Since 2008, MetaSensing has been commercially offering services and sensors allowing a larger group of users to benefit from the advantages of SAR technology.   What is SAR? Synthetic Aperture Radar is a remote sensing imaging technology. Like Lidar, radar is an active sensor that transmits electromagnetic energy and records the reflection of this energy from objects on the Earth's surface. The chief advantage of SAR with respect to other optical imaging technologies... (read more)
2011-09-09 03:12:59
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