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A radiosonde is a unit for use in weather balloons that measures various atmospheris parameters and transmits them to a fixed receiver. Radiosondes may operate at a radio frequency of 403 MHz or 1680 MHz and both types may be adjusted slightly higher or lower as required.

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Wind Sensors like Cup Anemometers are consisted of three or four hemispherical cups each mounted on one end of horizontal arms, which in turn were mounted at equal angles to each other on a vertical shaft. The air flow past the cups in any horizontal direction turned the cups in a manner that was proportional to the wind speed. Therefore, counting the turns of the cups over a set time period produced the average wind speed for a wide range of speeds. On an anemometer with four cups it is easy to see that since the cups are arranged symmetrically on the end of the arms, the wind always has the hollow of one cup presented to it and is blowing on the back of the cup on the opposite end of the cross.

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An anemometer is a device that is used for measuring wind speed, and is one instrument used in a Weather Sation. Anemometers can be divided into two classes: those that measure the wind’s velocity, and those that measure the wind’s pressure; but as there is a close connection between the pressure and the velocity, an anemometer designed for one will give information about both.

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A windsock or wind cone is a conical textile tube designed to indicate wind direction and relative wind speed.   Windsocks typically are used at airports and at chemical plants where there is risk of gaseous leakage. They are sometimes located alongside highways at windy locations.

Wind direction is the opposite of the direction in which the windsock is pointing (note that wind directions are conventionally specified as being the compass point from which the wind originates; so a windsock pointing due north indicates a southerly wind). Windspeed is indicated by the windsock’s angle relative to the mounting pole; in low winds, the windsock droops; in high winds it flies horizontally.

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A weather station is a facility with instruments and equipment for observing atmospheric conditions to provide information for weather forecasts and to study the weather and climate. The measurements taken include temperature, barometric pressure, humidity, wind speed, wind direction, and wind precipitations amounts. Wind measurements are taken as free of other obstructions as possible, while temperature and humidity measurements are kept free from direct solar radiation, or insolation. Manual observations are taken at least once daily, while automated observations are taken at least once an hour.

The JY-33 Weather Radar is a S-band IF coherent Doppler with high detection capabilities.

It can monitor weather targets within the range of 500km around radar site, perform intensity of weather targets quantificational measurement within range of 250km, monitor average radial velocity and speed spectrum width of the precipitation particles within the range of 250km.

It can provide real-time weather information, so it is a strong tool in short time forecast, analysis of mesoscale, small-scale weather system and prediction of strong convection weather disaster.

JY-33 radar has a wide variety of services not only in observatories of all-levels, but also in irrigation, agriculture, salt field, transportation and atmospheric physics research fields.l High gain, low side lobe parabolic antenna.

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