Microwave Remote Sensing Soil Moisture Monitoring System and Its Monitoring Method

Abstract

The invention relates to a microwave remote sensing soil moisture monitoring system and a monitoring method thereof. The monitoring system includes a detection arm, a signal receiving antenna and a thermal infrared thermometer mounted on the detection arm, and an electrical connection with the signal receiving antenna and the thermal infrared thermometer. A microwave detection system, and a data processing device electrically connected to the microwave detection system, the monitoring method is that the data analysis and processing system in the data processing device combines the brightness temperature data obtained by the microwave detection system with the soil surface obtained by the thermal infrared thermometer Real-time synchronous processing of the physical temperature data, and accurate evaluation of soil moisture information. The microwave remote sensing soil moisture monitoring system and the monitoring method thereof provided by the invention adopt a passive method to acquire soil microwave radiation signals, have a simple working model, high precision and high efficiency, and are not limited by the observation frequency.

Description

technical field [0001] The invention relates to the technical field of microwave remote sensing, in particular to a microwave remote sensing soil moisture monitoring system and a monitoring method thereof. Background technique [0002] An important parameter index in the fields of hydrology, meteorology and agricultural scientific research is soil moisture. Soil moisture also plays a very important role in today's agricultural development. Accurate and real-time soil moisture monitoring and inversion is of great significance in agricultural science fields such as rational utilization of water resources, agricultural irrigation, and drought and flood disaster forecasting. It is good for crop growth information acquisition, soil moisture monitoring and analysis, weather and runoff prediction Forecasting and other aspects have a great impact. In agricultural production, the losses caused by drought disasters are very serious every year. Preparing to grasp the soil moisture sit...

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Problems solved by technology

However, this method belongs to the active microwave method. Due to the need for a high-power microwave emission source, the equipment and instruments are relatively expensive and cumbersome; relatively speaking, there are problems such as data inversion is difficult, and it is easy to be deceived by ground electromagnetic reflection false targets.

[0016] At present, there is still a lack of real-time monitoring system of soil moisture based on passive microwave remote sensing technology.

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