Differential Reflectivity Calibration and Antenna Temperature

Differential Reflectivity Calibration for NEXRAD

Temperature Calibration of Differential Scanning Calorimeters

A procedure for calibrating the temperature scale of a DSC is described. A different calibration trend was obtained using the transition points of organic compounds compared to that found using the melting points of highly pure metals. The crystal-crystal transitions of three ammonium salts were studied by this method; ammonium dihydrogen phosphate and ammonium sulphate were found to be suitabl...

Differential Reflectivity Bias Caused by Cross Coupling of H, V Radiation from the Antenna

The preferred embodiment of dual linear polarization technology on the WSR-88D weather radars is the mode whereby horizontal (H) and vertical (V) polarizations are transmitted and received simultaneously (Doviak et al. 2000). This mode is sometimes referred to as “hybrid” (Wang et al. 2006); to shorten notation we label it SHV (Simultaneous Horizontal and Vertical). The USA National Weather Ser...

Differential Reflectivity (ZDR) Calibration for CASA Radar Network using Properties of the Observed Medium

The use of X-band radars for weather surveillance and research, either as standalone or in collaborative and adaptive networks, has advanced significantly during the past years. With advantages that include lower cost, smaller infrastructure and easier deployment, and the capability to provide the required resolution and coverage when sampling the atmosphere at the mid to long range low altitud...

Antenna Calibration Methods for Antenna Factor Measurements

In the fields of electromagnetic interference and electromagnetic compatibility, it is important to measure the strength of the electric field originating from electric devices. For this purpose, knowledge of the antenna factor of a receiving antenna is necessary. According to international standards, the accurate measurement of the antenna factor involves the use of calibration test sites char...