高精度Ka频段测控天线卫星跟踪预报方法研究
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TH754V556

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High precision satellite tracking and prediction model for Kaband TT&C antenna
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    摘要:

    卫星地面站一般采用两行轨道根数(TLE)格式的SGP4/SDP4模型计算卫星轨道预报进行引导,但是随着Ka频段通信卫星天线应用不断拓展,使用该模型进行轨道预报不能满足Ka频段天线高精度测控要求,特别是低仰角的高轨卫星。提出了基于轨道根数的Ka频段测控天线卫星跟踪预报方法,分析了不同精度要求下卫星摄动模型对轨道预报的影响,考虑了电波折射对跟踪角度的误差修正,设计了轨道预报计算流程,在保证轨道预报精度的同时,简化了轨道计算模型;通过对两个低仰角的高轨卫星实验数据分析,其跟踪引导精度优于0005°,能够满足Ka频段测控天线高精度稳定连续跟踪的要求,可大大提高通信卫星在恶劣天气、设备故障等应急状态下的高速数据传输能力和可用度指标。

    Abstract:

    Satellite ground stations generally use the SGP4/SDP4 model of two line element(TLE) format to calculate and predict the satellite orbit for guidance. However, with the continues expanding applications of Kaband communication satellite antenna, this orbit prediction model can not meet the requirements of high precision measurement and control of Kaband antenna, especially for highorbit satellite with low elevation angle. A satellite tracking and prediction method based on orbit elements for Kaband TT&C antenna is proposed. The influence of satellite perturbation model on orbit prediction under different precision requirements is analyzed. And the error correction of the electric wave elevation is considered and the orbit prediction calculation process is designed. The orbit calculation model is simplified while guaranteeing the accuracy of orbit prediction. The proposed method is tested using two highorbit satellites with low elevation angles, and the tracking guidance accuracy is less than 0005 degrees which can meet the requirements of highprecision, stable and continuous tracking for Kaband TT&C antenna. This work can greatly improve the highspeed data transmission capacity and availability of communication satellite in bad weather, equipment failure and other emergency situationss.

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张俊丽,翟政安,杨勇,李亚晶,吴炜玮.高精度Ka频段测控天线卫星跟踪预报方法研究[J].仪器仪表学报,2019,40(4):54-60

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  • 在线发布日期: 2022-01-17
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