Free Newsletters - Space - Defense - Environment - Energy - Solar - Nuclear
..
. 24/7 Space News .




EARTH OBSERVATION
Prepping for radar vision
by Staff Writers
Paris (ESA) Mar 25, 2014


This 'interferogram' shows Petermann Glacier grinding towards the sea along the northwestern coast of Greenland. Two Radarsat-2 TOPS images acquired 24 days apart were used to generate it. Radarsat-2 was programmed specially by MDA to work in an experimental imaging mode called Terrain Observation by Progressive Scans (TOPS) in azimuth to match the way ESA's Sentinel-1 will image Earth. Synthetic Aperture Radar Interferometry - or InSAR - is a technique where two or more satellite radar images acquired over the same area are combined to detect large-scale surface changes. Small changes on the ground cause changes in the radar signal phase and lead to rainbow-coloured fringes in the interferogram. This image shows some stationary and relatively slowly moving features, as well as some large areas of much faster moving ice. The interferometric fringes are widely spaced in the stationary areas and closer together in the centre of the glacier where the ice is moving much faster. Image courtesy ESA/MDA. For a larger version of this image please go here.

Sentinel-1A, Europe's first satellite for Copernicus, is almost ready for launch on 3 April. Meanwhile, ESA is showing how its advanced radar will map ice, monitor subsidence and much more.

Marking a new era in Earth observation focusing on operational applications, Sentinel-1A is set to deliver timely imagery for numerous Copernicus services.

Carrying an advanced radar, it will scan Earth's surface no matter what the weather and regardless of whether it is day or night.

In crisis situations, it will be used for rapid response to disasters such as floods and earthquakes. Its radar will routinely monitor shipping zones, map sea ice and provide information on winds and waves for marine traffic, track changes in the way land is being used, and monitor subsidence.

It will also track how glaciers move, as shown in the image above of Petermann Glacier in northwest Greenland.

So that users are fully prepared for the images Sentinel-1A delivers, Canada's Radarsat-2 was recently programmed by MacDonald, Dettweiler and Associates to scan Earth's surface using the same novel 'interferometric' wide-swath mode technique as Sentinel-1. Consequently, a suite of images was acquired over various sites.

As the most realistic Sentinel-1-like images to date, they show the performance and suitability of the new mission for classifying different types of sea ice, detecting ships and monitoring oil platforms.

They also included image pairs to show changes in glaciers such as Petermann, and a 'stack' of 11 images to map surface subsidence in Mexico City.

The image of Petermann Glacier was derived from two images taken 24 days apart. It shows some stationary and slowly moving features, as well as some large areas of much faster-moving ice. The pattern's fringes are widely spaced in the stationary areas and closer together in the centre of the glacier where the ice is moving much faster.

The wealth of data available through ESA's Earth observation campaign data website is helping to pave the way for users to get the maximum out of the upcoming mission.

The Sentinel-1mission comprises two identical satellites for optimal global coverage and data delivery. Sentinel-1B will join Sentinel-1A in orbit next year.

.


Related Links
Sentinel-1
Earth Observation News - Suppiliers, Technology and Application






Comment on this article via your Facebook, Yahoo, AOL, Hotmail login.

Share this article via these popular social media networks
del.icio.usdel.icio.us DiggDigg RedditReddit GoogleGoogle




Memory Foam Mattress Review
Newsletters :: SpaceDaily :: SpaceWar :: TerraDaily :: Energy Daily
XML Feeds :: Space News :: Earth News :: War News :: Solar Energy News





EARTH OBSERVATION
NASA Completes Global Hawk ATTREX Flights For 2014
Edwards AFB CA (SPX) Mar 18, 2014
NASA's Global Hawk research aircraft returned to its base at NASA's Armstrong Flight Research Center at Edwards Air Force Base, Calif., early Friday morning March 14, marking the completion of flights in support of this year's Airborne Tropical Tropopause Experiment (ATTREX), a multi-year NASA airborne science campaign. On Feb. 13, the autonomously operated aircraft began conducting scienc ... read more


EARTH OBSERVATION
China's Jade Rabbit lunar rover rouses from latest slumber

Study on lunar crater counting shows crowdsourcing effective, accurate tool

Spacesuits And Moon Notes Among The Stars At Bonhams NYC Auction

Russia to launch three lunar rovers from 2016 to 2019

EARTH OBSERVATION
The Exploration of Murray Ridge Continues

Mars Reconnaissance Orbiter Resumes Full Duty

NASA Orbiter Safe After Unplanned Computer Swap

Mars name-a-crater scheme runs into trouble

EARTH OBSERVATION
E3-production - sustainable manufacturing

TED turns 30 with new chapter of 'ideas worth spreading'

Orion Makes Testing, Integration Strides Ahead of First Launch to Space

ORBITEC and Wisconsin Await Countdown for "VEGGIE" to Space on SpaceX 3

EARTH OBSERVATION
Tiangong's New Mission

"Space Odyssey": China's aspiration in future space exploration

China to launch first "space shuttle bus" this year

China expects to launch cargo ship into space around 2016

EARTH OBSERVATION
Russian Progress Spacecraft Boosts ISS Orbit

Japanese astronaut becomes ISS commander

Station Crew Preps for Return to Earth, Repairs Recycling System

NASA says US-Russia space ties 'normal'

EARTH OBSERVATION
Proton-M with two Russian communication satellites on board blasts off from Baikonur

ASTRA 5B delivered for integration on Ariane 5 launcher

Proton-M carrier rocket with two satellites abroad installed on Baikonur launch pad

Lockheed Martin Commercial Launch Services Announces Industry-Unique "Refund Or Reflight" Program

EARTH OBSERVATION
UK joins the planet hunt with Europe's PLATO mission

X-ray laser FLASH spies deep into giant gas planets

Crashing Comets Explain Surprise Gas Clump Around Young Star

Every red dwarf star has at least one planet

EARTH OBSERVATION
Pushing and pulling: Using strain to tune a new quantum material

Lightweight Construction Materials of Highest Stability Thanks to Their Microarchitecture

Oregon physicists use geometry to understand 'jamming' process

It looks like rubber but isn't




The content herein, unless otherwise known to be public domain, are Copyright 1995-2014 - Space Media Network. All websites are published in Australia and are solely subject to Australian law and governed by Fair Use principals for news reporting and research purposes. AFP, UPI and IANS news wire stories are copyright Agence France-Presse, United Press International and Indo-Asia News Service. ESA news reports are copyright European Space Agency. All NASA sourced material is public domain. Additional copyrights may apply in whole or part to other bona fide parties. Advertising does not imply endorsement, agreement or approval of any opinions, statements or information provided by Space Media Network on any Web page published or hosted by Space Media Network. Privacy Statement All images and articles appearing on Space Media Network have been edited or digitally altered in some way. Any requests to remove copyright material will be acted upon in a timely and appropriate manner. Any attempt to extort money from Space Media Network will be ignored and reported to Australian Law Enforcement Agencies as a potential case of financial fraud involving the use of a telephonic carriage device or postal service.