L-waveband narrow-band electron sonde

Abstract

The invention relates to the field of high-altitude meteorological detection, in particular to an L-band narrow-band electronic sonde, which is characterized by comprising a sensor module, a receivingmodule and a transmitting module, the transmitting module comprises a single-chip microcomputer control system, a multifunctional radio frequency module, a filter, a two-stage microwave switch, a two-stage high-frequency amplifier and a one-stage power amplifier. Sounding data of the sensor module and a pulse signal transmitted by the receiving module are input into the single-chip microcomputercontrol system; the single-chip microcomputer control system adopts a time-sharing working mode, divides unit time into three time periods and outputs sounding code signals, ranging signals and anglemeasurement signals respectively, and the signal characteristics are frequency modulation signals, pulse modulation signals and continuous wave signals respectively. According to the invention, a frequency modulation and amplitude modulation mixed system is adopted to solve the defects that the current amplitude modulation system sonde occupies a wide frequency band and the frequency modulation system sonde cannot measure the distance, and the requirement that meteorological frequency band spectrum resources occupy the bandwidth is met; and a time division working mode is adopted to solve same-frequency interference, and stability and reliability are achieved.

Description

technical field [0001] The invention relates to the field of high-altitude meteorological detection, in particular to an L-band narrow-band electronic radiosonde. Background technique [0002] The high-altitude meteorological detection radar system is one of the most important means of conventional atmospheric detection at present. Conventional high-altitude meteorological detection refers to the observation of changes in space meteorological elements from the surface of the earth to the height of tens of thousands of meters by the radiosonde carried by the radar tracking balloon. The activities and work processes of detection, collection and processing. The radiosonde is an important part of the upper-air meteorological detection system. [0003] At present, the stations of China Meteorological Department use radiosondes with amplitude modulation system. This radiosonde occupies a wide frequency band, which cannot meet the requirements of use in today's increasingly tense...

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Problems solved by technology

[0005] The purpose of the present invention is to provide a kind of L-band narrow-band electronic radiosonde, adopt frequency modulation, amplitude modulation mixed system to solve the shortcoming that current amplitude modulation system radiosonde occupies the frequency bandwidth, and frequency modulation system radiosonde cannot measure distance, and satisfies the meteorological frequency band Spectrum resource occupation bandwidth requirements; using time-division working mode to solve the same-channel interference, stable and reliable

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