The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
The Time-Resolved Observations of Precipitation structure and storm Intensity with a Constellation of Smallsats (TROPICS) mission was recently selected by NASA as part of the Earth Venture Instrument (EVI-3) program. The overarching goal for TROPICS is to provide nearly all-weather observations of 3-D temperature and humidity, as well as cloud ice and precipitation horizontal structure, at high temporal...
The Mars Environmental Dynamics Analyzer (MEDA) is a suite of environmental sensors onboard NASA's Mars 2020 mission. The Thermal InfraRed Sensor (TIRS), developed at Centro de Astrobiología of Spain, is one of the six sensors comprising MEDA, and it will measure the net thermal infrared radiation and reflected solar radiation at the surface, as well as the atmospheric and surface skin temperatures...
Considering the imminent migration of services to the Ka- and Q-bands, a payload dedicated to propagation measurements in these bands has become available from the Alphasat satellite under the coordination of the European Space Agency. This has strongly motivated the formation of many measurement campaigns across Europe in an effort to enhance the scientific databases with new, more reliable propagation...
Over the next several years, NASA plans to launch several earth science missions which are expected to achieve data throughputs of 5–40 terabits per day transmitted from low earth orbiting spacecraft to ground stations. The current S-band and X-band frequency allocations in use by NASA, however, are incapable of supporting the data rates required to meet this demand. As such, NASA is in the planning...
Slant path brightness temperatures were measured at 72.5 and 82.5 GHz with a multi-channel radiometer. One year of measurements collected at 36° elevation angle in Rome, NY were examined in terms of the attenuation statistics. The radiometric response was modeled with Monte-Carlo solution of the radiative transfer equation. The measured statistics were examined in relation to attenuation prediction...
The ground-based atmospheric microwave sounder is introduced. It is a multi-channel passive radiometer operating at K-band and V-band. By receiving and analyzing the earth's generated and reflected radiation at the two frequencies, the instrument will measured the vertical distribution of atmospheric temperature and humidity. The principle of microwave sounding is presented and the detailed system...
A new microwave radiative transfer ocean surface emissivity model for horizontal and vertical polarizations has been developed. Ocean radiative transfer models find many applications in the remote sensing, and as such, it is important that they can accurately predict brightness temperatures (Tb) over a wide range of electromagnetic wavelengths, incidence angles and environmental conditions. This model...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.