Mr. Sergey Krimchansky Profile

Sergey Krimchansky

AMTS Instrument Manager at NASA Goddard Space Flight Ctr

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Publications (3)

Proceedings Article | 1 November 2005 Paper

Performance for first flight unit of the advanced technology microwave sounder (ATMS)

Sergey Krimchansky

Proceedings Volume 5979, 597926 (2005) https://doi.org/10.1117/12.632429

KEYWORDS: Calibration, Signal processing, Radiometry, Microwave radiation, Receivers, Antennas, Electronics, Filtering (signal processing), Electronic filtering, Digital signal processing

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Proceedings Article | 22 December 2004 Paper

Predicted performance for first flight unit of the Advanced Technology Microwave Sounder (ATMS)

Sergey Krimchansky, Prabodh Patel

Proceedings Volume 5654, (2004) https://doi.org/10.1117/12.572935

KEYWORDS: Calibration, Radiometry, Microwave radiation, Antennas, Signal processing, Receivers, Space operations, Electronics, Digital signal processing, Asynchronous transfer mode

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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.

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