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Artificial rainfall is the process of using aircraft or rockets to sprinkle catalysts such as dry ice, silver iodide, and salt powder into clouds at appropriate times based on the physical characteristics of different cloud layers. This is done to induce precipitation or increase precipitation in the clouds, in order to alleviate or alleviate drought in farmland, increase irrigation water or water supply capacity in reservoirs, or increase electricity generation.

The artificial rainfall launcher has been widely used due to its relatively low price and low operational complexity. However, due to the negligence of the traditional artificial rainfall launch cannon control system, there is no precise hub connection and data recording between the control console and the operator. The operator basically relies on experience to control the launch cannon angle. This method not only has inaccurate accuracy, but also lacks professional recorded data feedback, resulting in unclear division of responsibilities between the launch cannon control console and the operator.

Huilian Technology has developed and produced related electronic compass products for this situation, with an azimuth accuracy of 0.5 °, which are installed on the rotating bracket of the launcher. The electronic compass can accurately measure the pitch angle and azimuth angle of the launching gun, meeting the high requirements of the artificial rainfall launching gun for the launching angle and azimuth, and ensuring safe and accurate operation. The electronic compass can accurately record console data, providing effective support for accountability investigation. Being able to accurately control the firing angle of the cannon provides strong support for accurately hitting the target.