A5067549983- Meteorological Phenomena and Simulations
- Precipitation Measurement and Analysis
- Tropical and Extratropical Cyclones Research
- Atmospheric aerosols and clouds
- Soil Moisture and Remote Sensing
- Spacecraft Design and Technology
- Climate variability and models
- Satellite Communication Systems
- Ionosphere and magnetosphere dynamics
- Geophysics and Gravity Measurements
- Calibration and Measurement Techniques
- Ocean Waves and Remote Sensing
- GNSS positioning and interference
- Microwave Imaging and Scattering Analysis
- Atmospheric Ozone and Climate
- Antenna Design and Optimization
- Microwave Engineering and Waveguides
- Spacecraft and Cryogenic Technologies
- Inertial Sensor and Navigation
- Space exploration and regulation
- Antenna Design and Analysis
- Solar and Space Plasma Dynamics
- Sparse and Compressive Sensing Techniques
- Planetary Science and Exploration
- Infrared Target Detection Methodologies
MIT Lincoln Laboratory
2016-2025
Massachusetts Institute of Technology
2014-2025
Mitsubishi Electric (Japan)
2019
University of Electro-Communications
2019
Tohoku University
2019
Tokyo Denki University
2019
Nagoya University
2019
Niigata University
2019
Bellingham Technical College
2018
Center for Astrophysics Harvard & Smithsonian
2018
Intercalibration of satellite instruments is critical for detection and quantification changes in the Earth's environment, weather forecasting, understanding climate processes, monitoring land cover change. These applications use data from many satellites; to be interoperable, must cross-calibrated. To meet stringent needs such applications, provide reliable, accurate, consistent measurements over time. Robust techniques are required ensure that observations different can normalized a common...
The Time-Resolved Observations of Precipitation structure and storm Intensity with a Constellation Smallsats (TROPICS) mission was selected by NASA as part the Earth Venture-Instrument (EVI-3) program. overarching goal for TROPICS is to provide nearly all-weather observations 3D temperature humidity, well cloud ice precipitation horizontal structure, at high temporal resolution conduct high-value science investigations tropical cyclones. will rapid-refresh microwave measurements (median...
The Suomi National Polar‐Orbiting Partnership (NPP) satellite was launched on 28 October 2011 and carries the Advanced Technology Microwave Sounder (ATMS) board. ATMS is a cross‐track scanning instrument observing in 22 channels at frequencies ranging from 23 to 183 GHz, permitting measurements of atmospheric temperature moisture under most weather conditions. In this study, radiometric calibration algorithm used operational system first evaluated through independent analyses prelaunch...
A novel statistical method for the retrieval of atmospheric temperature and moisture profiles has been developed evaluated with simulated clear-air observed partially cloudy sounding data from Atmospheric InfraRed Sounder (AIRS) Advanced Microwave Sounding Unit (AMSU). The algorithm is implemented in two stages. First, a projected principal components (PPC) transform used to reduce dimensionality optimally extract geophysical profile information cloud-cleared infrared radiance data. Second,...
Abstract The first of a new generation microwave sounders was launched aboard the Suomi‐National Polar‐Orbiting Partnership satellite in October 2011. Advanced Technology Microwave Sounder (ATMS) combines capabilities and channel sets three predecessor into single package to provide information on atmospheric vertical temperature moisture profiles that are most critical observations needed for numerical weather forecast models. Enhancements include size/mass/power approximately one third...
We introduce a new hyperspectral microwave remote sensing modality for atmospheric sounding, driven by recent advances in device technology that now permit receiver arrays can multiplex multiple broad frequency bands into more than 100 spectral channels, thus improving both the vertical and horizontal resolutions of retrieved profile. Global simulation studies over ocean land clear cloudy atmospheres using three different profile databases are presented assess temperature, moisture,...
Abstract We present comprehensive validation results for the recently introduced neural network technique retrieving vertical profiles of atmospheric temperature and water vapor from spaceborne microwave hyperspectral infrared sounding instruments. This is currently in operational use as first guess NASA Atmospheric Infrared Sounder (AIRS) Science Team Version 6 retrieval algorithm. The incorporates a variety data sources, independent algorithm training set, ground truth, including global...
This article describes recent advances in the capability of new satellite sensors for observing Tropical Cyclones (TC) fine structure, wind field, and temporal evolution. The is based on a World Meteorological Organization (WMO) report prepared 10th International Workshop (IWTC), held Bali December 2022, its objective to present updates TC research operation every four years. Here we focus regarding most space-based observations, cover methodologies techniques using polar orbiting sensors,...
New constellations to provide high-resolution atmospheric observations from microwave sounders operating in lowearth orbit are now coming online and demonstrating the potential operationally useful data. The first of these missions, NASA TROPICS (Time-Resolved Observations Precipitation structure storm Intensity with a Constellation Smallsats) Earth Venture (EVI-3) mission, was successfully launched into on May 8 25, 2023 (two CubeSats each two launches). is providing nearly all-weather 3-D...
Abstract This study examines the three-dimensional thermodynamic structure of a rapidly intensifying tropical cyclone (TC) through utilization synthetic retrievals based off specifications NASA’s Time-Resolved Observations Precipitation and storm Intensity with Constellation Smallsats (TROPICS) mission. Proxy TROPICS vertical profiles temperature water vapor mixing ratio generated from Hurricane Nature Run (HNR1; Nolan et al. 2013) are utilized to analyze TC over 10-day period that includes...
New constellations to provide high-resolution atmospheric observations from microwave sounders operating in low-earth orbit are now coming online and demonstrating the potential operationally useful data. The first of these missions, NASA TROPICS (Time-Resolved Observations Precipitation structure storm Intensity with a Constellation Smallsats) Earth Venture (EVI-3) mission, was successfully launched into on May 8 25, 2023 (two CubeSats each two launches).  is providing nearly...
The Micro-sized Microwave Atmospheric Satellite (MicroMAS) is a 3D cubesat (30×10×10 cm, 4kg) hosting passive microwave spectrometer operating near the 118.75-GHz oxygen absorption line. focus of first MicroMAS mission (hereafter, MicroMAS-1) to observe convective thunderstorms, tropical cyclones, and hurricanes from near-equatorial orbit at approximately 500-km altitude. A flight unit currently being developed in anticipation 2014 launch. parabolic reflector mechanically rotated as...
This letter presents the simulated design and signal processing algorithms of a novel single-transceiver compressive reflector antenna for high-sensing-capacity imaging. The (CRA) generates spatial code in imaging region, which is dynamically changed by using mechanical rotation reflector. scattered data measured single transceiver processed sensing techniques order to perform 3-D reconstruction object under test. Preliminary results show that CRA outperforms traditional antennas terms...
The 24 papers in this special issue are grouped into the following categories: spectral unmixing; classification and segmentation; compression; information extraction, fusion, simulation; band selection; high performance computing; monitoring of environment.
Neural networks have been widely used to provide retrievals of geophysical parameters from spectral radiance measurements made remotely by air-, ground-, and space-based sensors. The advantages based on neural include speed execution, simplicity the trained algorithm, ease error analysis, proliferation high quality training data sets derived models and/or operational has further facilitated their use. In this article, we examples retrieval algorithms with a focus Jacobian analysis. We...
In this paper we report total dose test results of COTS components commonly used on CubeSats. We investigate a variety analog integrated circuits, popular microcontrollers (PIC24), SD memory cards and TCXO.
This paper presents a novel norm-one-regularized, consensus-based imaging algorithm, based on the Alternating Direction Method of Multipliers (ADMM). algorithm is capable composite dielectric and metallic targets by using limited amount data. The distributed capabilities ADMM accelerates convergence imaging. Recently, Compressive Reflector Antenna (CRA) has been proposed as way to provide high-sensing-capacity with minimum cost complexity in hardware architecture. applied (CA) outperforms...
Abstract Satellite observations are indispensable for weather forecasting, climate change monitoring, and environmental studies. Understanding quantifying errors uncertainties associated with satellite essential hardware calibration, data assimilation, developing records. observation can be classified into four categories: measurement, operator, representativeness, preprocessing errors. Current methods diagnosing still yield large due to these complex When simulating errors, empirical...
Abstract This paper examines precipitation retrievals from Kidd et al. (2022, https://doi.org/10.3390/rs14132992 ) by applying the Precipitation Retrieval and Profiling Scheme to data observed NASA Time‐Resolved Observations of structure storm Intensity with a Constellation Smallsats (TROPICS) Millimeter‐wave Sounder (TMS) onboard TROPICS Pathfinder satellite, precursor mission. We first compare TMS retrieval performance over ocean those seven current operational passive microwave...
The National Polar-Orbiting Operational Environmental Satellite System (NPOESS) Aircraft Sounder Testbed (NAST) has been developed and deployed on the NASA ER-2 high-altitude aircraft. testbed consists of two co-located cross-track scanning instruments: a Fourier transform interferometer spectrometer (NAST-I) with spectral coverage 3.7-15.5 /spl mu/m passive microwave (NAST-M) 17 channels near oxygen absorption lines at 50-57 GHz 118.75 GHz. provides first coregistered imagery from...
We present a new high-fidelity method of calibrating cross-track scanning microwave radiometer using Global Positioning System (GPS) radio occultation (GPSRO) measurements. The and GPSRO receiver periodically observe the same volume atmosphere near Earth's limb, these overlapping measurements are used to calibrate radiometer. Performance analyses show that absolute calibration accuracy better than 0.25 K is achievable for temperature sounding channels in 50-60-GHz band total-power weakly...
This paper describes a novel norm-one-regularized, consensus-based imaging algorithm, based on the Alternating Direction Method of Multipliers (ADMM), that can be used by high-sensing-capacity Compressive Reflector Antenna (CRA). The proposed method outperforms current state art iterative reconstruction algorithms in terms computational cost; and it ultimately enables use CRA quasi-real-time, compressive sensing applications.