Mr. Alexander Krimchansky Profile

Alexander Krimchansky

Aerospace Engineer at NASA Goddard Space Flight Ctr

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Author

Publications (5)

Proceedings Article | 14 September 2020 Presentation + Paper

Validation of GOES-17 ABI reflective channels performance: Salar de Uyuni 2018 field campaign results

Boryana Efremova, Joel McCorkel, Alexander Krimchansky, Jason Hair, Marcos Andrade

Proceedings Volume 11501, 115011B (2020) https://doi.org/10.1117/12.2568601

KEYWORDS: Reflectivity, Atmospheric modeling, Calibration, Sensors, Imaging systems, In situ metrology, Radiative transfer, Target detection

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SPIE Journal Paper | 30 June 2020

Reflective solar band striping mitigation method for the GOES-R series advanced baseline imager using special scans

Monica Cook, Francis Padula, Dave Pogorzala, Aaron Pearlman, Joel McCorkel, Alexander Krimchansky

JARS, Vol. 14, Issue 03, 032409, (June 2020) https://doi.org/10.1117/12.10.1117/1.JRS.14.032409

KEYWORDS: Sensors, Calibration, Image quality, Reflectivity, Imaging systems, Clouds, Staring arrays, Mirrors, Target detection

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Proceedings Article | 4 November 2004 Paper

GEO sounding using microwave instruments

Sergey Krimchansky, Joel Susskind, Alexander Krimchansky, Donald Chu, Robert Lambeck, Martin Davis

Proceedings Volume 5570, (2004) https://doi.org/10.1117/12.565283

KEYWORDS: Microwave radiation, Clouds, Antennas, Receivers, Signal processing, Satellites, Space operations, Video processing, Calibration, Knowledge management

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There are several microwave instruments in low Earth orbit (LEO) that are used for atmospheric temperature and humidity sounding by themselves and in conjunction with companion IR sounders. These instruments have achieved a certain degree of maturity and are undergoing a redesign to minimize their size, mass, and power requirements from the previous generation instruments. An example of these instruments is the AMSU-A series, now flying on POES and Aqua spacecraft, with the IR sounders HIRS3 and AIRS respectively. These older microwave instruments are going to be replaced by the ATMS instruments that will fly on NPP and NPOESS satellites with the CrIS IR sounder. A number of enabling technologies acquired from the ATMS instrument hardware design and data processing are directly applicable to performing similar microwave sounding on a geostationary platform. Because these technologies are already in place, they are readily available for the development of a geostationary orbit (GEO) microwave instrument, thereby avoiding costly technology development and minimizing the risk of not achieving the scientific requirements. In fact, the MMIC microwave components that were developed by ATMS for size and volume reduction are directly applicable to a GEO microwave sounder. The benefits of microwave sounders are well known. They penetrate non-precipitating cloud cover and allow for accurate soundings obtained with a collocated high spectral resolution IR sounder in up to 80% cloud cover. The key advantages of a microwave instrument in GEO will be its ability to provide high temporal resolution and uniform spatial resolution, and it will expand the utility of a collocated advanced IR sounder to cases in which partial cloud cover exists. A footprint in the order of 100 km by 100 km resolution with hemispherical coverage within one hour can be easily achieved for sounding channels in the 50 to 57 GHz range. A GEO microwave sounder will also allow mesoscale sampling of select regions.

Proceedings Article | 4 November 2004 Paper

Next-generation Geostationary Operational Environmental Satellite (GOES-R series): a space segment overview

Alexander Krimchansky, Dino Machi, Sandra Cauffman, Martin Davis

Proceedings Volume 5570, (2004) https://doi.org/10.1117/12.565281

KEYWORDS: Space operations, Satellites, Sensors, Imaging systems, Environmental sensing, Magnetic sensors, Extreme ultraviolet, Data communications, Data acquisition, Satellite communications

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The next-generation National Oceanic and Atmospheric Administration (NOAA) Geostationary Operational Environmental Satellite (GOES-R series) is currently being developed by NOAA in partnership with the National Aeronautics and Space Administration (NASA). The GOES-R series satellites represents a significant improvement in spatial, temporal, and spectral observations (several orders of magnitude) over the capabilities of the currently operational GOES-I/M series and GOES-N series satellite to be launched at the end of 2004. The GOES-R series will incorporate technically advanced "third-generation" instruments and spacecraft enhancements to meet evolving observational requirements of forecasting for the era 2012-2025. The GOES-R instrument complement being developed includes an Advanced Baseline Imager (ABI), a Hyperspectral Environmental Suite (HES), a GEO Lightning Mapper (GLM), a Solar Imaging Suite (SIS) and a Space Environment In-Situ Suite (SEISS). Also, candidates for a number of GOES-R Pre-Planned Product Improvements (P3Is) includes a Geo Microwave Sounder, a Coronagraph, a Hyperspectral Imager, and a Solar Irradiance Sensor. Currently, the GOES-R space segment architecture is being evaluated as part of a GOES-R system End-to-End Architecture Study. The GOES-R notional baseline architecture is a constellation of two satellites (A-sat and B-sat) each nominally located at 75 degrees West longitude and at 135 degrees West longitude at geostationary altitude, 0 degrees inclination. The primary mission of the A-sat is to provide imaging from the ABI. The A-sat will also contain the SIS and the GLM. The primary mission of the B-sat is to provide sounding of the hemispherical disk of the earth from the HES. The B-sat also contains the SEISS. Both satellites have mesoscale capabilities for severe weather sounding or imaging. This paper overviews the GOES-R Space Segment development including satellite constellation trade-off, improvements and differences between the current and future instrument and spacecraft capabilities, and technology infusion.

Proceedings Article | 8 April 2003 Paper

Techniques and trends in sensor data processing: NASA experiences with Earth observing satellites

Alan Johns, Phillip Sabelhaus, Alexander Krimchansky

Proceedings Volume 4881, (2003) https://doi.org/10.1117/12.462506

KEYWORDS: Sensors, Satellites, Data processing, Data modeling, Earth observing sensors, Space operations, Data communications, Earth sciences, Antennas, Data centers

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