## 2 Design Scheme of Aerial Remote Sensing Platform Based on Real-Time Satellite Communication  
In terms of natural disaster monitoring, aerial remote sensing technology has the advantages of high imaging quality and flexibility. Combined with real-time satellite communication technology, it has the characteristics of real-time monitoring. This aerial remote sensing platform with real-time satellite communication capability mainly consists of aircraft platform, ground observation system, wireless communication system, ground satellite information receiving station, data processing and application analysis system, etc. (Figure 1). This design is based on aircraft as a platform, using remote sensing equipment installed in it to obtain raw data from natural disaster areas. Within the effective range,ground information can be effectively collected by adjusting the flight altitude to form images or other format data materials. The information is transmitted in real time to the geostationary satellite through the onboard satellite base station, and then sent to the designated ground fixed base station, so that global synchronous and uninterrupted data transmission can be achieved. Accordingly, the obtained on-site data of the disaster area can be transmitted in real time to the command center to formulate disaster response plans in the shortest possible time. Due to the real-time uplink and downlink communication capability of satellite transmission, the command center can also command aerial platforms to adjust their routes in a timely manner, conduct mobile investigations of disaster sites, and achieve real-time monitoring and emergency response in the event of natural disasters. In the aerial remote sensing platform, the aircraft is the heavy-duty twin-rotor unmanned aerial vehicle, Camel 500, produced by Chongqing Tuohang Technology Co., Ltd., Chongqing, China This aircraft has a maximum takeoff weight of 500 kg and a load capacity of 50% (with the highest load ratio of unmanned aerial vehicles of the same class). It has a transportation capacity of flying with a load of 200 kg for 1 h, about 100 km, or a load of 150 kg for 3 h, about 300 km. This aircraft has a large loading space, multiple hanging points, rich delivery methods, and good adaptability to the center of gravity, which is much better than conventional helicopters. The ground satellite information receiving station  
Figure 1: Composition diagram of the aerial remote sensing platform based on real-time satellite communication. and data processing and application analysis system are mature equipment, which will not be detailed in this paper. The ground observation system is a combination of an orthographic image stabilization platform and a visible light camera loaded on it. The image stabilization platform is a mechanical image stabilization device. Its basic principle is to detect the shaking of the camera platform through inertial devices such as gyroscope sensors, and then adjust the servo system to isolate the external shaking of the photoelectric equipment, achieving the goal of stabilizing the image. Due to the equipment base fixed on the aircraft shaking with the turbulence of the aircraft, if there is no stabilization platform, the camera equipment will shake accordingly. In cases of significant shaking, this can seriously affect the image stitching effect and the shooting effect of photoelectric devices with longer exposure times. The airborne orthographic stabilization platform is generally installed at the belly position of the aircraft. Drill holes in the lower part of the camera and install a visible transparent cover. By controlling the self-stability of the frame in both pitch and roll directions, it ensures that the optical device lens loaded on the frame is always perpendicular to the ground plane during flight and perceives and collects data (mainly images) from ground targets. Optical systems have high resolution performance, so high-precision ground information can be obtained.