Meteorological Doppler radar

摘要

The meteorological radar unit contains the consistently connected former 1 of the packets of the probing multi-frequency narrowband and broadband signals, the broadband transmitter 2, the polarization device 3 of the UHF signals and the antenna switch 4. The switch 4 in the simplest case contains two UHF circulators 5 and 6, which are connected to the transmitting and receiving antenna 7 after the signals of the probing and to the four-channel radio 8 according to the reflected meteorological signals. The outputs of the wireless device 8 are connected to the computer 9, on which the administration takes place. The computer 9 contains the units 23 and 24 for the management, as well as the primary and secondary processing of the meteorological signals. The former 1 of the packets of the probing multi-frequency narrowband and wideband signals contains the UHF control generator 10 and the intermediate frequency intermediate frequency generator 11, which are connected at the output by the mixer 12 to the signal output of the amplification transmitter 2. The two-frequency generator 11 forms the packets of the long and short pulses, which are spread in frequency by 1 ÷ 10 MHz. The short pulse of the intermediate frequency is not modulated, and the long pulse is executed with the internal pulse modulation. The meteorological radar has an increased accuracy of measurements of atmospheric formations at a distance of up to hundreds of kilometers by using an order of probing multi-frequency pulses with double polarization, different length and width spectrum different in width. 9 genuine claim, Figure 1.