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USGS Release: Aging Landsat 5 Changes Glasses

USGS Release: Aging Landsat 5 Changes Glasses | Remote Sensing News | Scoop.it
Landsat 5 has orbited Earth over 150,000 times since it was launched in 1984, making it the longest-operating Earth observing satellite of its kind. During this time, two data collection instruments onboard Landsat 5 — the thematic mapper (TM) and the multi-spectral scanner (MSS) — have transmitted over five million images of land conditions to U.S. and international ground stations.

In November 2011 an electronic malfunction in the TM transmitter forced a suspension of routine imaging. Now, after months of trying without success to restore daily TM image transmissions, USGS flight engineers will attempt only a few additional image acquisitions over specific sensor-calibration sites as the TM transmitter nears complete failure.

On a positive note, the MSS instrument onboard Landsat 5 was recently powered back on in a test mode after more than a decade of silence.

"The resurrection of the MSS a decade after it was last powered up and 25 years beyond its nominal lifespan is welcome news indeed," said USGS Director Marcia McNutt. "While not a complete replacement for the loss of the Thematic Mapper, it does provide some insurance for ensuring Landsat data continuity should Landsat 7 fail prior to Landsat 8 achieving orbit next year."

The MSS sensor, the forerunner of TM, gathers data in fewer spectral bands than TM, has lower pixel resolution, and does not acquire thermal data. However, each MSS scene covers the same area as a TM scene, approximately 12,000 square miles. The USGS is currently acquiring MSS data only over the United States. Landsat International Cooperator stations may begin downlinking data from other parts of the globe, depending on their intentions and ability to establish MSS data processing capabilities.

It will take some months for MSS data to be integrated into current production systems and be made publically available. Landsat 5 has sufficient fuel to operate through 2013.

Landsat 7, the other active Landsat spacecraft operated by the USGS, continues to collect images worldwide, as it has done since 1999. In 2003, Landsat 7 experienced a hardware failure that causes a 22% loss of data in every image. In the intervening nine years, many techniques have been developed to partially compensate for the data loss and leverage the remaining data for scientific analysis and resource monitoring.

The next Landsat, the Landsat Data Continuity Mission (LDCM or Landsat 8), is scheduled for launch in January 2013. Following launch, it will become Landsat 8 and is expected to extend the Landsat record for at least another five years.

Once Landsat 8 is fully operational, the collection of MMS data from Landsat 5 will be re-evaluated.

For further details and the latest information about the status of Landsat 5, visit the USGS Landsat Missions website.

The Landsat Program is a series of Earth observing satellite missions jointly managed by the U.S. Geological Survey and NASA. Landsat satellites have been consistently gathering data about our planet since 1972. They continue to improve and expand this unparalleled record of Earth's changing landscapes for the benefit of all.

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The impact of scale on remote sensing of forests

The impact of scale on remote sensing of forests | Remote Sensing News | Scoop.it
The role of forests within the global ecosystem is something we’ve discussed quite a bit through our blog. From the ecosystem services that forests provide, to the proposed implementation of REDD+ ...
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NASA | Tracking Urban Change With Landsat [HD]

Landsat data is used by MacDonald, Dettwiler, and Associates, LTD to make the National Urban Change Indicator, or NUCI. The process identifies areas of perma...
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Whales from Space: Counting Southern Right Whales by Satellite

Whales from Space: Counting Southern Right Whales by Satellite | Remote Sensing News | Scoop.it

We describe a method of identifying and counting whales using very high resolution satellite imagery through the example of southern right whales breeding in part of the Golfo Nuevo, Península Valdés in Argentina. Southern right whales have been extensively hunted over the last 300 years and although numbers have recovered from near extinction in the early 20thcentury, current populations are fragmented and are estimated at only a small fraction of pre-hunting total. Recent extreme right whale calf mortality events at Península Valdés, which constitutes the largest single population, have raised fresh concern for the future of the species. The WorldView2 satellite has a maximum 50 cm resolution and a water penetrating coastal band in the far-blue part of the spectrum that allows it to see deeper into the water column. Using an image covering 113 km2, we identified 55 probable whales and 23 other features that are possibly whales, with a further 13 objects that are only detected by the coastal band. Comparison of a number of classification techniques, to automatically detect whale-like objects, showed that a simple thresholding technique of the panchromatic and coastal band delivered the best results. This is the first successful study using satellite imagery to count whales; a pragmatic, transferable method using this rapidly advancing technology that has major implications for future surveys of cetacean populations.

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Remote Sensing in ArcGIS Tutorial 16b. Spectral...

Remote Sensing in ArcGIS Tutorial 16b. Spectral... | Remote Sensing News | Scoop.it
Tutorial 16b in a series of 20 (16 is broken into two videos: a and b) covering remotely sensed data in ArcMap 10.x versions. This tutorial covers spectral e... (Remote Sensing in ArcGIS Tutorial 16b.
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The Usability of a Web Mapping Application with a Million Rows of Data

The Usability of a Web Mapping Application with a Million Rows of Data | Remote Sensing News | Scoop.it
Manuel Timita write about Illustreets, a web mapping application built with Open Source software, open data, and emerging GIS technologies (i.e. CartoDB).
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What It Looks Like When One Satellite Sees Another

What It Looks Like When One Satellite Sees Another | Remote Sensing News | Scoop.it
There aren't many U.S. government programs — even space programs — like Landsat. Since the 1970s, the project's satellites have continuously imaged the surface of the Earth, pro...
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Jenni's curator insight, March 30, 5:48 AM

Don't be fooled by the beaut graphic you see first, read on to learn about the Landsat satellites in orbit and see the real image taken by Landsat 8 of the retired Landsat 5 Satllite.

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Remote Sensing | Free Full-Text | Modeling Accumulated Volume of Landslides Using Remote Sensing and DTM Data

Remote Sensing | Free Full-Text | Modeling Accumulated Volume of Landslides Using Remote Sensing and DTM Data | Remote Sensing News | Scoop.it
Landslides, like other natural hazards, such as avalanches, floods, and debris flows, may result in a lot of property damage and human casualties. The volume of landslide deposits is a key parameter for landslide studies and disaster relief.
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Three earth remote sensing satellites to be launched in 2014

Kazakhstan plans to launch three spacecrafts into space till the end of this year. This was announced at a meeting of the Board of the National Space Agency ...
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Remote Sensing Tutorial 20b: Accuracy Assessmen...

Remote Sensing Tutorial 20b: Accuracy Assessmen... | Remote Sensing News | Scoop.it
Tutorial 20b in a series of 20 (20 is broken into two videos: a and b) covering remotely sensed data in ArcMap 10.x versions. This tutorial covers accuracy a...
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Lecture - 4 Remote Sensing in Engineering Geology

Lecture Series on Engineering Geology by Prof.Debasis Roy, Department of Civil Engineering,I.I.T.Kharagpur.For more Courses visit http://nptel.iitm.ac.in.
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Remote Sensing in Agriculture

This video is made to share the findings of my research with the local farming community and farm service agencies. It is also part of my Independent Study c...
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A Planetary Perspective: With Landsat and Google Earth Engine - YouTube

Congratulations to the Landsat program on 40 years of continuous earth observation! Since July 1972, NASA's Landsat satellites have gathered images over the ...
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40 Years Landsat: Satellite Imagery for Everyone

In June 2012 the U.S. together with other partner states and the United Nations Office for Outer Space Affairs organized an exhibition on the 40th anniversar...
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How-To download Landsat imagery | GISblog.com

How-To download Landsat imagery | GISblog.com | Remote Sensing News | Scoop.it
How-To download Landsat imagery In this guide we will show how to download free Landsat images using EarthExplorer.
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Detection of harvested forest areas in Italy using Landsat imagery

Detection of harvested forest areas in Italy using Landsat imagery | Remote Sensing News | Scoop.it

This study presents a thorough approach, based on the application of multi-spectral remote sensing Landsat imagery, to determine human-induced forest cover change in Italy during the decade 2002–2011. A total of 785.6 ×1 04 ha of forestland was mapped using the main forest classes described within the CORINE land cover 2006 database (3.11 – broad-leaved forest; 3.12 – coniferous forest; 3.13 – mixed forest). The approach employs multi-temporal Landsat imagery to determine large-scale spatiotemporal variations in forest cover with a high degree of precision. The semi-automated procedure is based on Normalized Difference Vegetation Index (NDVI) pixel-oriented image differencing technique. The results were validated and rectified as a result of on-screen visual interpretation, whereby all the false-positive forest changes that were incorrectly mapped during the automatic procedure were identified and removed. The derived high-resolution data of forest cover change show that 317,535 ha (4.04% of the total forest area in Italy) were harvested during the period under review. The 125,272 individual clear-cut areas identified are mainly located within protected areas of the European Natura 2000 network. The outcome of this study is a publicly accessible database that can encourage further studies in the framework of international biodiversity and soil protection conventions (http://eusoils.jrc.ec.europa.eu/library/themes/erosion/italy/). The methodology can contribute to the monitoring of human-induced forest changes in support of the Kyoto Protocol.

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Tracking Whales with Satellite Imagery

Tracking Whales with Satellite Imagery | Remote Sensing News | Scoop.it
Researchers with the British Antarctic Survey have developed a methodology to use unsupervised classification to remotely identify and count right whale populations near Golfo Nuevo, Península Valdés in Argentina using Very High Resolution (VHR)...
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Remote sensing used to detect moisture status of pecan orchards grown in a desert environment

Remote sensing used to detect moisture status of pecan orchards grown in a desert environment | Remote Sensing News | Scoop.it
Remote sensing used to detect moisture status of pecan orchards grown in a desert environment (#Life #Science ▶ Remote sensing used to detect moisture status of pecan orchards grown in a desert environment http://t.co/loUmNFvQP1)...
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Remote Sensing | Free Full-Text | Ontology-Based Classification of ...

Remote Sensing | Free Full-Text | Ontology-Based Classification of ... | Remote Sensing News | Scoop.it
Accurate information on urban building types plays a crucial role for urban development, planning, and management. In this paper, we apply Object-Based Image Analysis (OBIA) methods to extract buildings from Airborne ...
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Remote Sensing | Free Full-Text | A Comparative Study on Satellite ...

Remote Sensing | Free Full-Text | A Comparative Study on Satellite ... | Remote Sensing News | Scoop.it
Remotely-sensed green-up, maturity, senescence and dormancy MODIS dates were extracted for areas previously identified as crops and were compared with simulated leaf area indices (LAI) temporal profiles generated ...
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Seasonal Amazon Greening May Be a Satellite Effect : Image of the Day

Seasonal Amazon Greening May Be a Satellite Effect : Image of the Day | Remote Sensing News | Scoop.it
A new analysis shows how changes in the angle between the Sun and a satellite sensor interact to create the illusion of greening during the dry season. (why we need ppl who understand remote sensing+maths+ecology "@NASA_EO: illusions of greening.
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Sky lasers for plant measuring

Sky lasers for plant measuring | Remote Sensing News | Scoop.it
If you’re like me, you’ve wondered how lasers might have a practical
application in your life. Luckily, I think lasers could be very useful for
researching some of the things I am interested in.
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Remote sensing applications

Title: Remote sensing applications in agricultural hydrology Speaker: Dr Jasmeet Judge Director, Center For Remote Sensing University of Florida USA Date: 27...
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Testing CATS in space: Laser technology to debut on space station - EurekAlert (press release)

Testing CATS in space: Laser technology to debut on space station - EurekAlert (press release) | Remote Sensing News | Scoop.it
Testing CATS in space: Laser technology to debut on space station
EurekAlert (press release)
This Earth remote sensing instrument is scheduled to launch to the space station in September 2014 as a demonstration project.
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How Advanced Image Processing Helps For SAR Image Restoration ...

By Florence Tupin I. OVERVIEW The past few years have seen important advances in remote sensing imagery. The new sensors have improved resolutions in all.
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Remote Sensing in ArcGIS Tutorial 16b. Spectral Enhancement of Landsat Imagery

Tutorial 16b in a series of 20 (16 is broken into two videos: a and b) covering remotely sensed data in ArcMap 10.x versions. This tutorial covers spectral e...
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