Subscribe free to our newsletters via your
. 24/7 Space News .

Subscribe free to our newsletters via your

JPL researchers report on new tool to provide even better Landsat images
by Staff Writers
Bellingham WA (SPX) Feb 01, 2016

JPL researchers report in Optical Engineering on a new imaging spectrometer design to improve Landsat images. Above, Fig. 3: Spectrometer ray-trace in the spectral direction. The two reflecting prisms and planoconvex element are made of CaF2. The grating aperture as shown is 14 cm in diameter. Image courtesy Pantazis Mouroulis, JPL, et al. For a larger version of this image please go here.

For more than 40 years, Landsat satellites have provided a wealth of data that has informed our understanding of Earth features, phenomena, and environments as diverse as coral reefs, urbanization, tropical deforestation, and glaciers. Now, scientists at the Jet Propulsion Lab (JPL) at the California Institute of Technology have developed a way to substantially improve images derived from Landsat systems.

Pantazis Mouroulis and colleagues at JPL describe in a new article published in Optical Engineering the design of a high-throughput and high-uniformity pushbroom imaging spectrometer and telescope system that is capable providing Landsat swath and resolution with better than 10 nm per pixel spectral resolution over the full visible to short-wave infrared band.

The Landsat 8 satellite carries a thermal infrared sensor and an operational land imager (OLI). The OLI replaced a thematic mapper found in the previous Landsat generations, which used a scan mirror to cover the required wide swath. OLI instead utilizes long detector arrays in a pushbroom fashion, the authors note in "Landsat swath imaging spectrometer design."

While the removal of the scan mirror is an advance in terms of signal to noise, reliability, and potential simplicity of design, the OLI design still suffers from registration concerns between bands owing to the nonsimultaneity of data collection.

An imaging spectrometer does not suffer that problem since it is capable of collecting all bands simultaneously.

Even more important is the enhanced science potential that the full spectroscopic capability brings, the authors note.

"However," they write, "it has been generally difficult to find optical spectrometer and system solutions that satisfy the swath, resolution, spectral range, and signal to noise ratio of the heritage systems. We present in this paper a pushbroom imaging spectrometer design that can achieve these objectives."

Journal associate editor Thomas Cooley, a senior scientist with the U.S. Air Force Research Lab, emphasized the significance of the report, noting that it demonstrates new capabilities in "what is technically possible with advances in a range of supporting technology domains."

Co-authors with Mouroulis are Robert Green, Byron Van Gorp, Lori Moore, Daniel Wilson, and Holly Bender.

Thanks for being here;
We need your help. The SpaceDaily news network continues to grow but revenues have never been harder to maintain.

With the rise of Ad Blockers, and Facebook - our traditional revenue sources via quality network advertising continues to decline. And unlike so many other news sites, we don't have a paywall - with those annoying usernames and passwords.

Our news coverage takes time and effort to publish 365 days a year.

If you find our news sites informative and useful then please consider becoming a regular supporter or for now make a one off contribution.

SpaceDaily Contributor
$5 Billed Once

credit card or paypal
SpaceDaily Monthly Supporter
$5 Billed Monthly

paypal only


Related Links
SPIE--International Society for Optics and Photonics
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 DiggDigg RedditReddit GoogleGoogle

Previous Report
NASA awards infrared instrument for next polar satellite
Greenbelt MD (SPX) Jan 31, 2016
NASA has awarded a sole source contract modification to Exelis Space Systems, Inc., a wholly owned subsidiary of the Harris Corporation, of Fort Wayne, Indiana, for two Cross-track Infrared Sounder (CrIS) instruments for flight on the Polar Follow-On/Joint Polar Satellite System (JPSS)-3 and -4 missions. This is a cost-plus-award-fee modification in the amount of $316 million. The total va ... read more

Phase of the moon affects amount of rainfall

Russia postpones manned Lunar mission to 2035

Audi joins Google Lunar XPrize competition

Lunar mission moves a step closer

Sandy Selfie Sent from NASA Mars Rover

Mars Rover Opportunity Busy Through Depth of Winter

4 people to live in an HERA habitat for 30 days at JSC

Getting real - on Mars

Challenger disaster at 30: Did the tragedy change NASA for the better?

Innovations in the Air

Astronaut rescue exercise proves Det. 3 command, control ready to support DoD, NASA

Voyager Mission Celebrates 30 Years Since Uranus

Last Launch for Long March 2F/G

China aims for the Moon with new rockets

China shoots for first landing on far side of the moon

Chinese Long March 3B to launch Belintersat-1 telco sat for Belarus

Russian Cosmonauts to Attach Thermal Insulation to ISS

Astronaut Scott Kelly plays ping pong with water

Japanese astronaut learned Russian to link two nations

NASA, Texas Instruments Launch mISSion imaginaTIon

SpaceX Tests Crew Dragon Parachutes

Initial launcher assembly clears Ariane 5 for its payload integration process

70th consecutive successful launch for Ariane 5

AMOS-6 Scheduled for May 2016 Launch by Space-X

Astronomers discover largest solar system

Lonely Planet Finds a Mum a Trillion Km Away

Follow A Live Planet Hunt

Lab discovery gives glimpse of conditions found on other planets

A new quantum approach to big data

NASA Engineers Tapped to Build First Integrated-Photonics Modem

Lockheed Martin UK supplying radar to Royal Navy

Laser Debris Shields

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

The content herein, unless otherwise known to be public domain, are Copyright 1995-2017 - 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. All articles labeled "by Staff Writers" include reports supplied to Space Media Network by industry news wires, PR agencies, corporate press officers and the like. Such articles are individually curated and edited by Space Media Network staff on the basis of the report's information value to our industry and professional readership. 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