Data for different elevation angles are collected for some time and Range Height Indicator (RHI) : In this type, radar keeps its azimuth fixed and varies elevation. If it rotates less than 360 degree, it is referred as sector scan.If radar rotates about 360 degree, it is referred as surveillance scan.Plan Position Indicator (PPI): In this type, radar keeps elevation angle fixed and varies azimuth angle. Refer VSAT system overview for complete details on these components.įor meteorology application radar uses scanning techniques such as PPI and RHI. Radome is used to protect antenna and other subsystems from high speed winds.Feedhorn focus the received signal into the receiver part and also directs the signal from the transmitter part to the antenna.Antenna is used to transmit the signal into the air and capture the RF signal from the air.LNA, RF downconverter, demodulator and display. Receiver consists of RF signal analysis modules viz.modulator, RF upconverter and power amplifier. Transmitter consists of RF signal generation modules viz.It consists of transmitter, receiver, antenna system, feedhorn and radome. The block diagram in the figure mentions basic components used in a typical weather radar system. Keep current with important weather changes using real-time radar images, precipitation and temperature forecasts, customizable weather alerts, accurate weather maps, and more. Consider Clime your one-stop weather radar app. It transmits short pulses at this frequency at the rate of Clime: NOAA Weather Radar Live is an all-in-one weather tracker right on your device. The weather radar usually transmit radio wave of about 3000MHz frequency (About 10cm wavelength). It is this radar which helps pilot fly the aircraft in the thick dark cloud and poor visibility conditions. Targets here can be trees, clouds, raindrops, bumblebees and so on. Similar to the other radars, this type of radar also transmits radio frequency pulse and determines various parametersīased on received scattered pulse wave. Weather radar has been developed for determining climatic conditions such as wind speed, cloud formations,
Later on advances in the radar technology lead to research in the sea, land and space. In general radar has been developed for detecting presence of aircrafts and ships during the world war. This tutorial section on radar basics covers following sub topics: Main Page Terminology Measurements Doppler Radar FMCW RADAR BANDs RADAR SCOPE Weather Radar Ground radar RANGE and RESOLUTION Range calculator
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