Dual-channel simultaneous transmitting and receiving type Doppler polarization weather radar

A weather radar, transceiver technology, applied in the field of microwave remote sensing and telemetry, can solve problems such as performance is greatly affected by temperature, slow sampling speed, poor data accuracy, etc., to achieve the effect of superior performance
CN1800876AInactive Publication Date: 2006-07-12COLD & ARID REGIONS ENVIRONMENTAL & ENG RES INST CHINESE
0 Cites 15 Cited by

Patent Information

Authority / Receiving Office
CN ยท China
Current Assignee / Owner
COLD & ARID REGIONS ENVIRONMENTAL & ENG RES INST CHINESE
Publication Date
2006-07-12
Estimated Expiration
Not applicable ยท inactive patent

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
  • Figure 3
    Figure 3
Patent Text Reader

Abstract

The invention relates to a electronic instrument to detect cloud and precipitation particle in microwave remote sensing and measuring field. Wherein, dividing the large-power microwave signal from a transmitter into two paths to send with azimuth twisted-pair bale and pitch twisted-pair cable to antenna with one path through the phase shifter and another path through the large-power attenuator and emit out with a duplexer and horn; then, driving the horizontal and vertical polarization echo signal formed by back scattering of the target into horizontal and vertical receive channels to mix with preamplifier and mixer into MF signal and send to digital MF receiver and convert into digital signal; finally, sending the signal into signal processor connected to high-speed LAN to transmit information to user. This invention fills up the filed domestic blank and provides a new device for radar weather enterprise and disaster prevention and reduction.
Need to check novelty before this filing date? Find Prior Art

Description

technical field

[0001] The invention belongs to the technical field of microwave remote sensing and telemetry, and is an electronic instrument used for cloud and precipitation particle detection. Background technique

[0002] The weather radar uses clouds and precipitation as the observation objects. It emits electromagnetic waves to the target, receives its backscattered echo, and then studies the characteristics of the target according to the change of the echo. According to the scattering theory, the ratio of the backscattered echo to the transmitted wave of the target has both amplitude and phase information changes, and these changes reflect the differences of the target. Moreover, this change is different for polarized waves in different states. Conventional weather radars and Doppler weather radars generally emit only one state of polarized waves. Conventional weather radar can only obtain the intensity information of clouds and precipitation (Zh), and it can only o...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More