基于LoRa技术的天基搜寻定位系统设计与实现

Design and Implementation of Space-Based Search-Positioning System Based on LoRa

摘要:

目前,LoRa技术在各类应急搜寻定位中广泛应用,但基于LoRa技术的应急搜寻定位系统主要依靠于陆基、空基与海基平台,此类平台缺乏广域发现与快速响应能力,不利于搜救人员第一时间掌握遇险人员的相关情况。同时,现有的卫星搜寻定位设备体积较大、功耗较高,不适合于随身携带与长时间使用。为了解决上述问题,设计一种基于天基平台的应急搜寻定位系统,将LoRa技术与卫星平台相结合,研制新型天基搜寻定位载荷。同时,引入可视化技术与地理信息数据,嵌入高精度传感器,研制地面求救与搜救设备,为搜救人员提供辅助决策支撑。实验果表明,该系统工作稳定可靠,将搜寻幅宽提升至千公里级别,具有一定的指导意义。

Abstract:

Currently, LoRa technology is widely used in emergency search-positioning system, but the system based on the LoRa technology mainly relies on land-based, air-based and sea-based platform. These platforms lack of wide-area search and rapid response ability, and the rescue workers cannot first grasp the situation of the personnel in emergency immediately by these platforms. Meanwhile, the existing satellite search-positioning equipment usually require large size and high power dissipation, these features are not suitable for carry-on and prolonged use. In order to solve the above problems, an emergency search-positioning system based on space-based platform is designed and implemented. The LORA technology is combined with the satellite platform to develop a new space-based search-positioning payload. At the same time, the visualization technology, geographic information data and high precision sensors are introduced to develop the ground distress and search-rescue equipment. The equipment can provide aid decision making for rescue workers. The experiment results show that the system is stable and reliable and can extend search-positioning scope up to 1000 km.