摘要
由于星载点波束天线覆盖范围较小,且可转动次数受使用寿命限制,当用于大范围机动用户通信时,需对其指向进行优化设计,在满足通信需求的前提下,尽可能延长天线的使用寿命。综合考虑卫星可视范围、点波束转动限位、点波束调整裕量等实际因素,提出了一种迭代搜索的点波束指向优化设计算法,并进行了仿真分析。仿真表明,这种算法在满足通信要求的同时可有效减少点波束移动次数,并为点波束天线的高效使用提供了途径,具有很强的工程应用价值。
Due to its fairly small coverage and restricted rotating times by service life,satellite spot-beam antenna should be optimally designed in its pointing when used in wide-range communication with moving targets,thus trying to extend service life of this antenna while guarenteeing communication requirements.Through comprehensive consideration of some practical factors,such ad satellite visual range,rotating limit of spot-beam antenna spot-beam modulation overmeasure,a modified algorithm of spot-beam pointing based on iterative search is proposed. Simulation indicates that the proposed algorithm could effectively reduce the moving times of spot-beam antenna while satisfying the requirements of communication,and it also provides a high-efficient approach in spot-beam application,thus enjoying great value in engineering application.
出处
《通信技术》
2015年第5期536-540,共5页
Communications Technology
关键词
点波束天线
移动目标
迭代搜索
spot-beam antenna
moving target
iterative search
