A5067238842- Calibration and Measurement Techniques
- Satellite Image Processing and Photogrammetry
- Infrared Target Detection Methodologies
- Planetary Science and Exploration
- Geochemistry and Geologic Mapping
- Advanced Image Fusion Techniques
- Spacecraft Design and Technology
- Geophysics and Gravity Measurements
- Remote Sensing and LiDAR Applications
- Atmospheric Ozone and Climate
- Cryospheric studies and observations
- Remote Sensing in Agriculture
- Climate change and permafrost
- Atmospheric and Environmental Gas Dynamics
- Remote-Sensing Image Classification
- Urban Heat Island Mitigation
- 3D Surveying and Cultural Heritage
- Soil Geostatistics and Mapping
- Synthetic Aperture Radar (SAR) Applications and Techniques
- Soil Moisture and Remote Sensing
- Air Traffic Management and Optimization
- Sensor Technology and Measurement Systems
- Rangeland and Wildlife Management
- Inertial Sensor and Navigation
- Robotics and Sensor-Based Localization
United States Geological Survey
2002-2023
Earth Resources Observation and Science Center
2014-2023
United States Department of Agriculture
2019
Risk Management Agency
2019
Stinger Ghaffarian Technologies (United States)
2013-2016
Science Applications International Corporation (United States)
2004-2012
Leidos (United States)
2004
Goddard Space Flight Center
2001-2004
University of Sioux Falls
2004
RTX (United States)
2000-2002
Formal planning and development of what became the first Landsat satellite commenced over 50 years ago in 1967. Now, having collected earth observation data for well four decades since 1972 launch Landsat-1, program is increasingly complex vibrant. Critical programmatic elements are ensuring continuity high quality measurements scientific operational investigations, including ground systems, acquisition planning, archiving management, provision analysis ready products. Free open access to...
The Landsat 8 spacecraft was launched on 11 February 2013 carrying the Operational Land Imager (OLI) payload for moderate resolution imaging in visible, near infrared (NIR), and short-wave (SWIR) spectral bands. During 90-day commissioning period following launch, several on-orbit geometric calibration activities were performed to refine prelaunch parameters. results of these subsequently used measure performance characteristics order verify OLI requirements. Three types calibrations...
The current Thematic Mapper (TM) class of Landsat sensors began with Landsat-4, which was launched in 1982. This series continued the nearly identical sensor on Landsat-5, 1984. final Landsat-7 Enhanced Plus (ETM+), carried into orbit 1999. Varying degrees effort have been devoted to characterization these instruments and data over past 22 years. Extensive short-lived efforts early history, very limited middle years, now a systematic program for continuing all three systems are apparent....
On 31 May 2003, the Landsat Enhanced Thematic Plus (ETM+) Scan Line Corrector (SLC) failed, causing scanning pattern to exhibit wedge‐shaped scan‐to‐scan gaps. We developed a method that uses coincident spectral data fill image This multi‐scale segment model, derived from previous SLC‐on (image acquired prior SLC failure), guide interpolation across gaps in SLC‐off images (images after failure). paper describes process used generate provides details of gap‐fill algorithm deriving...
Unlike its predecessors, Landsat-7 has undergone regular geometric and radiometric performance monitoring calibration since launch in April 1999. This ongoing activity, which includes issuing quarterly updates to parameters, generated a wealth of data over the four-year on-orbit period operations. A suite characterization (measurement evaluation procedures) (procedures derive improved estimates instrument parameters) methods are employed by Image Assessment System maintain track specific...
There is an ever-increasing need to use accurate and consistent geometric ground reference in the processing of remotely sensed data products, as this reduces burden on end-users account for differences between products from different missions. In regard, U.S. Geological Survey (USGS) initiated effort harmonize Landsat with Sentinel-2 Global Reference Image (GRI) improve co-registration two global medium-resolution paper, we discuss process, results, improvements expected harmonization...
The Landsat Collection-2 distribution introduces a new global Digital Elevation Model (DEM) for scene orthorectification. DEM is composite of the latest and most accurate freely available sources will include reprocessed Shuttle Radar Topographic Mission (SRTM) data (called NASADEM), high-resolution stereo optical (ArcticDEM), National Dataset (NED) various publicly national datasets including Canadian (CDEM) DEMs Sweden, Norway Finland (SNF). be world-wide with few exceptions. It...
The Landsat program has a long history of providing remotely sensed data to the user community. This is being extended with addition 9 satellite, which closely mimics 8 satellite and its instruments. These satellites contain two instruments, Operational Land Imager (OLI) Thermal Infrared Sensor (TIRS). OLI push-broom sensor that collects visible near-infrared (VNIR) short-wave infrared (SWIR) wavelengths at 30 m ground sample distance, along panchromatic 15 band. TIRS contains long-wave...
Landsat-8 was launched on 11 February 2013 with two new Earth Imaging sensors to provide a continued data record the previous Landsats. For Landsat-8, pushbroom technology adopted, and reflective bands thermal were split into instruments. The Operational Land Imager (OLI) is band sensor Thermal Infrared Sensor (TIRS), thermal. In addition these fundamental changes, added, spectral bandpasses refined, dynamic range quantization improved, numerous other enhancements implemented. As in Landsat...
Abstract The Global Land Survey (GLS) 2000 data were generated from Geocover™2000 with the aim of producing a global set accuracy better than 25 m Root Mean Square Error (RMSE). An assessment and validation GLS set, its co-registration Geocover™ is presented here. Since availability sets that have higher nominal concern, assessed in three tiers. In first tier, compared data. This comparison provided means localizing regions differences. second systematically corrected Landsat-7 scenes...
There is an ever-increasing interest and need for accurate georegistration of remotely sensed data products to a common global geometric reference. Although has improved substantially in the last decade, lack ground reference dataset poses serious issues providers seeking make geometrically stackable analysis-ready data. The existing Global Land Survey 2000 (GLS2000) derived from Landsat 7 images provides coverage can be used as dataset, but its accuracy much lower than what attained using...
The Landsat 7 spacecraft and its Enhanced Thematic Mapper Plus (ETM+) were launched on April 15, 1999. Pre-launch modeling of the ETM+ optical system predicted that modulation transfer function (MTF) performance would change on-orbit. A method was developed to monitor along-scan MTF sensor using on-orbit data Lake Pontchartrain Causeway in Louisiana. image scan lines crossing bridge treated as multiple measurements target taken at varying sampling phases. These line interleaved construct an...
The Landsat 8 spacecraft was launched on 11 February 2013 carrying two imaging payloads: the Operational Land Imager (OLI) and Thermal Infrared Sensor (TIRS). TIRS instrument employs a refractive telescope design that is opaque to visible wavelengths making prelaunch geometric characterization challenging. calibration thus relied heavily on-orbit measurements. Since payloads are complementary generate combined Level 1 data products, performance requirements emphasize co-alignment of OLI...
The Landsat 7 (L7) spacecraft and its instrument, the enhanced thematic mapper plus (ETM+), have been consistently characterized calibrated since launch in April of 1999. These performance metrics calibration updates are determined through U. S. Geological Survey (USGS) image assessment system (IAS), which has performing this function launch. Starting 2016, USGS adopted a tiered collection management structure for data products that ensures consistent method processing archive within given...
Starting with launch of Landsat 7 (L7) on 15 April 1999, the USGS Image Assessment System (IAS) has been performing calibration and characterization operations for over 20 years spacecrafts their associated payloads. With 9 (L9) 27 September 2021, that spacecraft its payloads, Operational Land Imager-2 (OLI-2) Thermal Infrared Sensor-2 (TIRS-2), were added to existing suite missions supported by IAS. This paper discusses geometric characterizations, calibrations, performance analyses...
The Landsat-5 Thematic Mapper (TM) scan mirror was switched from its primary operating mode to a backup in early 2002 order overcome internal synchronization problems arising long-term wear of the mechanism. bumper operation removes constraints on start and stop angles enforced angle monitor mode, requiring additional geometric calibration effort active angles. It also eliminates timing telemetry used correct TM geometry. These differences require changes correction algorithms process data....
The Earth Observing 1 (EO-1) Advanced Land Imager (ALI) demonstrates technology applicable to a successor system the Landsat Thematic Mapper series. A study of geometric performance characteristics ALI was conducted under auspices EO-1 Science Validation Team. This evaluated with respect absolute pointing knowledge, focal plane sensor chip assembly alignment, and band-to-band registration for purposes comparing this new heritage systems. On-orbit calibration procedures were developed that...
The Landsat Data Continuity Mission (LDCM) with two pushbroom Earth-imaging sensors, the Operational Land Imager (OLI) and Thermal InfraRed Sensor (TIRS), was launched on February 11, 2013. Its on-orbit check out period or commissioning phase lasted about 90 days. During this spacecraft its instruments were activated, operationally tested their performance verified. In addition, during period, temporarily placed in an intermediary orbit where it drifted relative to Landsat-7 spacecraft,...
The U.S. Geological Survey (USGS) changed the management and delivery of Landsat products to public in its archive through implementation Collections. Collections process ensures consistent data quality time across all sensors with a few modifications metadata. from are more conducive for applications such as time-series analysis, because can be used without need sensor-specific geometric or radiometric adjustments. also allows calibration improvements updated reference sources, model...
The goal of the current Landsat mission is to acquire annual data sets optical band digital imagery landmass Earth. Ground spatial resolutions for panchromatic, reflective and emissive bands are 15, 30 60 meters, respectively. design life Enhanced Thematic Mapper Plus (ETM+) imager on Landsat-7 satellite five years. was launched April 1999. builds 27-year continuous archive thematic images Earth from previous satellites. Early results ETM+ instrument, spacecraft, ground processing indicate...