Design Of Marine Meteorological Data Acquisition System Based On Multi-rotor UAV

Marine meteorological data collection elements mainly include temperature,humidity,air pressure,wind speed and wind direction.The existing marine meteorological data collection is mostly based on monitoring stations and radar satellites,and it is difficult to carry out refined meteorological data collection outside of the monitoring stations.Existing GPS dropsondes are mostly used for high-altitude weather data detection,and it is difficult to meet the data accuracy requirements in the ocean.This article is based on the characteristics of high maneuverability and easy operation of multi-rotor UAVs,combined with GPS wind measurement technology and dynamics.Kalman filter algorithm designed a marine meteorological data acquisition system.The main content of this article consists of the following parts:(1)Based on the existing research results and basic theories of GPS dropsonde technology and GPS wind measurement technology,this paper analyzes the measurement errors and multipath effects of GPS in marine dynamic positioning,and establishes sea dynamic multipath Error model and conventional measurement error model,combined with interactive multi-model algorithm and Kalman filter algorithm,proposed a dynamic Kalman filter algorithm to reduce the GPS positioning error on the ocean and improve the calculation results of the wind measurement algorithm.(2)The hardware part of the system uses STM32F030CCT6 as the control core,builds its peripheral basic circuit,and completes the selection of each sensor and external circuit design;the software part uses keil software to write the communication program of each sensor and the wind measurement of the dynamic filter algorithm Program,and communicate with the host computer through the communication protocol(ASCII).(3)Based on the LabVIEW software platform,the graphical G language is used to construct an intuitive display interface integrating meteorological data reception,display,preprocessing and storage,and the feasibility of the host computer is verified through the interface operation results.