Interference elimination method for water level measurement based on planar radar water level gauge

A technology of radar water level gauge and water level measurement, which is applied in the direction of measuring device, radio wave measurement system, liquid/fluid solid measurement, etc. It can solve the problems of large error, affecting measurement results, and inability to distinguish objects of different materials, etc., and achieves small error , accurate measurement, and the effect of eliminating interference
CN111006743AActive Publication Date: 2020-04-14NANJING AUTOMATION INST OF WATER CONSERVANCY & HYDROLOGY MINIST OF WATER RESOURCES
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
NANJING AUTOMATION INST OF WATER CONSERVANCY & HYDROLOGY MINIST OF WATER RESOURCES
Publication Date
2020-04-14

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Abstract

The invention discloses a interference elimination method for water level measurement based on a planar radar water level gauge. A multi-input multi-output radar antenna is used. Objects at differentpositions in a radar irradiation range can be distinguished, so that interferents such as a river levee can be eliminated; objects made of different materials can be distinguished, so that the water surface can be distinguished from other objects; when the interferent enters the center of the measurement range, interference of objects such as floaters and ships can be eliminated by analyzing whether the interferent is the water surface or not; and measurement errors are reduced, and measurement is more accurate.
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Description

technical field

[0001] The invention belongs to the technical field of water level measurement, and relates to a method for eliminating interference in water level measurement based on a planar radar water level gauge. Background technique

[0002] Radar water level gauge is a hydrological instrument that uses radar technology to measure water level. It is not affected by temperature gradient and water flow velocity during measurement. It has the characteristics of complete non-contact. There are strong application requirements in environments where it is not convenient to build water level wells and require high-precision data.

[0003] At present, the planar radar wave water level gauge and the pulse radar water level gauge on the market are both a single transmitting antenna and a single receiving antenna, which can only measure the plane within the beam width range of the radar antenna, and cannot distinguish objects of different materials, and other objects enter the ra...

Claims

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