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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...
Tracking the radiometer calibration stability is very important for climate monitoring radiometers as long term accuracy of observations is needed to create reliable climate models. This presentation discusses the advantages of 3-point onboard calibration techniques over 2-point methods to track radiometer calibration stability.
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...
Vacuum gauges used in deep space exploration are always calibrated in the laboratory. The temperature in the laboratory is about 23 °C± 3 °C, which is different from the environment temperature where the vacuum gauges is used. It will lead to the uncertainty of measurement results for vacuum gauge. Based on the requirement of the calibration for vacuum gauge in deep space exploration, a vacuum calibration...
Based on the method proposed by Qiu et al. (2014), some improvements for cloud screening have been developed to calibrate short-wave direct and global solar irradiances (DSI and GSI)[1]. This calibration at two Baseline Surface Radiation Network (BSRN) stations, Izana of Spain during 2010–2013 and Carpentras of France during 2005–2013, are analyzed in this paper. The transfer coefficients of DSI and...
In this paper we describe the end-to-end processing of image Fourier Transform spectrometry data taken at Picatinny Arsenal in New Jersey with the long-wave hyperspectral camera from Telops. The first part of the paper discusses the processing from raw data to calibrated radiance and emissivity data. Data was taken during several months under different weather conditions every 6 minutes from a 213ft...
Infrared measuring device is a device used for infrared radiation characteristic measurement. It is widely applied to each field of the military, industrial, medical, agriculture and forestry in our production life. The calibration of infrared measuring equipment directly affects the system error and the test precision of the instrument, so establish the feasible and effective calibration method,...
In modern particle accelerators RF phase detectors have to fulfill high demands on the stability and the accuracy to meet the goals of state-of-the-art synchronization systems. Especially challenges are those cases where the RF signal phase shift accuracy must be measured with fs-accuracy for several hours over the full 2π phase detection range. In these cases special measures on the components non-linearities...
High Spectral Resolution lidar (HSRL) systems have proven capable of providing nearly continuous calibrated profiling of atmospheric backscatter cross-section and depolarization. These are combined to provide detailed images of aerosol and cloud structure. They also provide calibrated measurements of atmospheric extinction. Atmospheric values of the 1/e extinction length range from less than 100 m...
The ARGO-YBJ experiment has been in stable data taking since November 2007 till February 2013 at the YangBaJing Cosmic Ray Laboratory (Tibet, P.R. China, 4300 m a.s.l.). Its main fields of research include gamma-ray astronomy with an energy threshold of a few hundreds GeV and Cosmic Ray physics up to PeV energies. The ARGO-YBJ detector consists of a single layer of RPCs operated in streamer mode,...
The need for radiometer calibration targets with very low coherent backscatter (S11) is not fully appreciated in the community which designs and uses mm-wave radiometers. We discuss why very low S11 is required and our attempts to design make and test calibration target with such desired low backscatter for calibrating both ground and space-based radiometers.
Calibration and validation of sensors is important for understanding how a sensor operates during its mission and shows the level of measurements that can be expected. The calibration is an on-going process throughout the mission but is most critical when the complete system comes together and during its initial stage after reaching orbit. Careful planning is required to accurately and efficiently...
In order to reinforce its contribution to the ocean monitoring, the Spanish Institute of Oceanography (IEO) deployed in June 2007 an oceanic-meteorological buoy (AGL Buoy, 43°50.67' N; 003°46.20' W, and 40 km offshore, www.boyaagl.st.ieo.es/) in the southern Bay of Biscay. The buoy is equipped with a suite of field-proven sensors for the measurement of atmospheric and hydrological parameters at the...
The Jet Propulsion Laboratory has developed the Hyperspectral Thermal Emission Spectrometer (HyTES).12 It is an airborne pushbroom imaging spectrometer based on the Dyson optical configuration. First low altitude test flights are scheduled for later this year. HyTES uses a compact 7.5-12□m hyperspectral grating spectrometer in combination with a Quantum Well Infrared Photodetector (QWIP) and grating...
The National Metrology Institute of Japan, AIST has developed a high gas pressure standard and a calibration system for pressure measuring devices. The maximum pressure is currently 20 MPa and will be extended to 100 MPa. The calibration system is mainly composed of a liquid-lubricated gas pressure balance, an automatic weight handler, a gas pressure controller, and a gas booster. The effective area...
To examine the reliability of thermocouple comparison in industry at high temperature, thermocouple comparison measurements were performed around 1324 °C in nine laboratories by using two Pt/Pd thermocouples and one type R thermocouple following calibration at Co-C eutectic point. It was found that the standard deviations of the emf values of the Pt/Pd-2 (one of the Pt/Pd thermocouples) and type R...
Superconducting Submillimeter-Wave Limb-Emission Sounder (SMILES) is a sensor for atmospheric observation at 640 GHz from the International Space Station. Since the launch in Sep. 2009, SMILES has been showing the excellent observation performance. The results of SMILES development are summarized.
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 series of small, lightweight, autonomous spectrometer systems has been designed in Tartu Observatory. They are used for obtaining top-of-canopy spectral reflectance measurements for vegetation remote sensing, validation of radiative transfer models, and reflectance-based vicarious calibration of satellite and airborne sensors. The spectrometer systems are based on miniature spectrometer modules...
This paper treats the second calibration of atmospheric transmission coefficient with a view to achieving the accurate temperature measurement in field by the infrared thermal imager. A calibrating model for temperature measurement by the infrared thermal imager with a far distance in field is built and a standard expanded area blackbody and an infrared thermal imager for temperature measurement are...
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