平台摇摆与旋转对HAPS通信链路性能影响及抑制方法研究

Obviously the airship doesn't keep stationary all long and the HAP(High Altitude Platform) state of instability will impact the wireless link performance of HAPS(High Altitude Platform Stations) communication seriously. By far, all the research work assumed that the high altitude platform moves vertically or horizontally or the high altitude platform keeps stationay. Therefore, offset caused by vertical or horizontal movement of high altitude platform is compensated by direction adjustment of antenna beam. Traditional method can not eliminate influence on the wireless link performance of HAPS communication caused by the swing and rotation of high altitude platform. Therefore, parameter characteristic system of high altitude platform's swing and rotation states is constructed. Wireless link models will be constructed by adopting the combination of array antenna design, beamforming technology, cell coverage and cell allocation, wireless link modeling technology and high altitude platform's states. In the project, influence suppression of high altitude platform's swing and rotation states on performance of wireless link of HAPS communication is realized by these wireless link models. Bit error and signal interruption in signal covering blind areas during the signal transmission will be resolved. The performance of wireless link is guaranted and signals will be transmitted reliably.

由于以飞艇为载体的高空平台不可能静止驻留在空中，平台的不稳定状态就会对HAPS(High Altitude Platform Stations)通信无线链路性能产生关键影响。目前的研究都集中考虑平台简单运动（水平或垂直移动）或假设平台稳定，通过调整天线波束指向补偿由于高空平台移动造成的剩余指向误差，这些研究存在很大的局限性。因此，本项目通过建立平台摇摆与旋转状态特征参数体系，采取阵列天线设计、波束形成技术、小区覆盖与划分、无线链路建模技术与平台状态相结合的方法，构建适合平台特定状态下的无线链路模型，抑制平台摇摆与旋转给HAPS通信链路性能带来的影响，解决高空平台摇摆与旋转情况下HAPS通信无线链路存在误码、信号中断或传输信号盲区的问题，以保证无线链路性能，实现信号的可靠传输。

由于以飞艇为载体的高空平台不可能静止驻留在空中，平台的不稳定状态就会对HAPS(High Altitude Platform Stations)通信无线链路性能产生关键影响。目前的研究都集中考虑平台简单运动（水平或垂直移动）或假设平台稳定，通过调整天线波束指向补偿由于高空平台移动造成的剩余指向误差，这些研究存在很大的局限性。因此，本项目通过建立平台摇摆与旋转状态特征参数体系，采取阵列天线设计、波束形成技术、小区覆盖与划分、无线链路建模技术与平台状态相结合的方法，构建适合平台特定状态下的无线链路模型，抑制平台摇摆与旋转给HAPS通信链路性能带来的影响，解决高空平台摇摆与旋转情况下HAPS通信无线链路存在误码、信号中断或传输信号盲区的问题，以保证无线链路性能，实现信号的可靠传输。