S-band Dual Polarization Doppler Weather Radar

Vue d'ensemble

1 S-band Dual Polarization Doppler Weather Radar BM-100 Bilinear polarization radar has now become the development direction of weather radar technology upgrades in various countries in the world. It has obvious advantages in rainstorm monitoring and precipitation estimation accuracy. The first S-band dual-linear polarization radar independently developed by Ninstar was exported to South Korea and successfully passed the on-site test and acceptance of Korean users in August 2009. The system is stable and reliable, and the detection data is true and credible. The BM-100 dual linear polarization radar's digital receiver, signal processing, radar control, product generation and analysis, product display and other complete sets of software use SIGMET products. The rich meteorological products generated by the radar system can fully meet the needs of operations and services such as short-term nowcasting, precipitation estimation, strong weather identification and analysis, wind field analysis, and shear identification. BM-100 dual polarization Doppler weather radar consists of antenna and servo system, transmitting system, receiving system, monitoring system, signal processing system, product generation and display system, power distribution system and accessories. Fully absorb the research results of the U.S. WSR-88D dual-linear polarization upgrade. The technical system of double sending and double receiving is adopted. Fully apply the online automatic calibration and compensation functions of the S-band single-polarization radar to ensure the detection accuracy of each parameter of the dual-polarization. The key components are those already used in the upgrade of the US WSR-88D dual linear polarization. It adopts the same working mode as that of the American WSR-88D dual-linear polarization upgrade.

Spécifications techniques

Caractéristiques principales : category project / technical indicators / Remark, Radome Working frequency band (MHZ) / 2700-3000 _ _ /, diameter (m) 11.9 / fiberglass foam plastic, RF Loss ( two-way dB) 0.3 / multi-layer structure, Introduced beam bias ( degrees ) 0.03 /, Introduced beamwidth broadening ( degrees ) 0.03 /, Wind resistance (m/s) 60 / gust, Antenna shape / paraboloid of revolution /, Reflector diameter (m) 8.54 /, Gain (dB) 45 /, Beamwidth ( degrees ) 0.99 /, First side lobe level (dB) -29 /, Far zone sub- lobes (dB) -42 /, Polarization mode linear level /, Servo unit Antenna control word length (bit) / 13 /, Antenna scan mode PPI , RHI , volume orientation / programmable control,, Antenna scanning speed ( degrees / second ) 36 (max) / Manual or operator control with priority, Maximum acceleration ( degrees / second2 ) 15 /, Antenna control accuracy ( degrees ) 0.1 /, Antenna positioning accuracy ( degrees ) 0.2 /, Antenna pitch range ( degrees ) -1 - +92 /, Transmitter type / Fully Coherent Amplification Chain / Klystron Final Amplifier, Working frequency (MHz) 2700-3000 /, Peak Power (KW) 650 /, Transmit pulse width ( uS ) 1.57 , 4.71 /, Pulse repetition frequency (Hz) 318-1304 _ _ /, Receiver IF Frequency (MHz) / 57.5491 /, Dynamic range (dB) Log 94 /, Noise figure ( system ) (dB) 4.0 /, Signal processor Strength Estimation Method / bearing and distance integration / Programmable 32 -bit DSP chip, speed estimation method PPP /, warehouse chief 250 meters and multiples / 5th order elliptic filter, Stock number 512 / 4 - 6 passband width optional, Ground debris suppression ability Better than 50dB /, RDA monitoring RDA status monitoring / /, real-time display 

 Archive A base data /, Product generation product generation / /, Archive B Base Data and Products /, Product display product request / /, Strength measurement distance 240km;.

Spécifications techniques

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