油气管道VSAT卫星链路计算方法研究  

Research on Calculation Method of VSAT Satellite Link for Oil and Gas Pipeline

作　　者：刘晓峰[1] LIU Xiaofeng(China Petroleum Pipeline Engineering Co.,Ltd.)

机构地区：[1]中国石油天然气管道工程有限公司

出　　处：《油气田地面工程》2024年第7期35-40,共6页Oil-Gas Field Surface Engineering

摘　　要：为了解决VSAT卫星链路完全依靠卫星厂家进行计算且无法核对厂家提供的数据是否正确的问题,针对VSAT卫星链路计算的可靠性和健壮性,提出了一种油气管道VSAT卫星链路计算方法。该方法采用“功带平衡”算法,将VSAT卫星链路的带宽占用比等同于功率占用比,计算出卫星转发器最大输出功率,进而计算等效功率密度,根据每载波占用卫星的ERIP值公式,计算出饱和通量密度,匹配出卫星天线尺寸及功放矩阵,根据匹配的卫星天线及功放计算VSAT卫星链路总载噪比,将VSAT卫星链路总载噪比和系统最低载噪比进行对比,VSAT卫星链路总载噪比大者为合适的卫星天线及功放,反之为不合适选项,用推算出的卫星天线及功放推算出功率占用比,功率占用比与带宽占用比差别较大时,需调整卫星天线及功放的选择,计算功率占用比,直到卫星天线及功放达到功率占用比等于带宽占用比,即为最优的卫星天线和功放。通过最终的计算可得出卫星天线与功放的匹配矩阵,在实际工程中需从中选取合适的卫星天线与功放中的最小值达到最经济、可靠的匹配。该计算方法通过软件编程进行了界面可视化显示,并在诸多工程中进行了详细验证,结果表明此方法准确可靠,很好地提升了VSAT卫星链路计算的可靠性和健壮性。In order to solve the problem that the VSAT satellite link calculation depends entirely on the satellite manufacturer and cannot check whether the data provided by the manufacturer is correct,and to improve the reliability and robustness of VSAT satellite link calculation,a calculation method for oil and gas pipeline VSAT satellite link is proposed.The method uses the algorithm of"power band bal-ance",and equivalent the bandwidth occupancy ratio of VSAT satellite links to the power occupancy ratio,calculating the maximum output power of the satellite transponder,then the equivalent power density is calculated.The saturated flux density is calculated according to the ERIP value formula of the satellite occupied by each carrier,and the satellite antenna size and power amplifier matrix are matched.The total carrier to noise ratio of the VSAT satellite link is calculated based on the matched satellite an-tenna and power amplifier,and the total carrier-to-noise ratio of the VSAT satellite link is compared with the lowest carrier-to-noise ratio of the system.The one with the higher total carrier-to-noise ra-tio of the VSAT satellite link is the appropriate satellite antenna and power amplifier,while the other is the unsuitable option.The calculated satellite antenna and power amplifier are used to calculate the pow-er occupancy ratio,if there is a significant difference between the power occupancy ratio and the band-width occupancy ratio,it is necessary to adjust the selection of satellite antenna and power amplifier and calculate the power occupation ratio until the power occupation ratio of satellite antenna and power am-plifier is equal to the bandwidth occupation ratio,which is the optimal satellite antenna and power am-plifier.Through the final calculation,the matching matrix of satellite antenna and power amplifier can be obtained,and the minimum value of suitable satellite antenna and power amplifier should be selected in practical engineering,which is the most economical and reliable matching.The method is visu

关 键 词：功带平衡 卫星链路 天线尺寸 功放 有效全向辐射功率 饱和功率通量密度 

分 类 号：TN927.2[电子电信—通信与信息系统]