Dropsonde and detection method

Abstract

The invention relates to a dropsonde and a detection method. The dropsonde comprises a parachute system and a control system, wherein the control system is hung in a load control box of the parachute system. A work spatial domain wind field changing with altitude heights is detected through a dropsonde mode, and transverse and vertical distribution of the changing wind filed can be tracked in real time. The parachute system comprises parachutes, operation ropes, parachute ropes, hanging belts and the load control box, wherein the load control box is used for disposing the control system and a damping foundation chamber. The real-time wind field information can be calculated through the control system, and the wind field information can be further displayed at a ground station in real time. The dropsonde is validated to accurately detect the wind field through practical detection experiments, change tendency of the wind field can be tracked in relatively short time, a mean absolute error of a detected wind direction is 3.2 DEG, a wind speed mean absolute error is 0.27m / s, and relatively high precision is realized.

Description

technical field [0001] The invention belongs to the field of unmanned aerial vehicle control, and designs a novel drop-down wind field detector. Background technique [0002] UAVs have a simple structure and low cost. They can be used not only for military purposes such as small-scale detection and reconnaissance, and delivery of emergency supplies, but also for civilian purposes such as aerial photography, spraying pesticides, and port fog removal. Due to its low speed, it is easily affected by atmospheric environmental conditions. In fact, even today, when the design of the aircraft is quite perfect, wind field disturbance is still one of the important reasons for the failure of mission execution. Therefore, before the UAV performs the mission, It is necessary to detect the changing wind field in the working airspace, plan a reasonable flight trajectory, and design a corresponding anti-wind disturbance control strategy to ensure the smooth execution of the drone mission. ...

AI Technical Summary

Problems solved by technology

Or use optical remote sensing instruments to measure the upper atmospheric wind field, which has high sensitivity. NASA uses the Wind Imaging Interferometer (WINDII) to detect the atmospheric wind field within the coverage of the satellite, and the wavelengths of the detected light source spectral lines are 557.7 nm and 630.0nm green and red polar spectral lines, obtained a large amount of accurate upper atmospheric wind field information, but could not provide accurate local area detailed wind field information, for UAV missions, when from high When flying from an altitude area to a low altitude area, what is needed is the layered information of the wind field in the entire working airspace. Therefore, in order to track the change trend of the entire wind field from the high Wind field distribution, to obtain more accurate wind field data, it is expected to have a wind field detection equipment with simple device, low cost, easy detection method and high precision

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