CAJ | 학술논문

描述了低轨卫星测控链路的城市传播环境,确定了对应的信道模型及其典型仿真值.提出了一种混合直扩/跳频扩频方案,建立了该方案的Systemview动态仿真模型,并在不同干扰样式下对该方案的抗干扰性能进行了仿真与分析.仿真结果表明提出的方案适合低轨卫星测控链路,具有较强的抗连续波干扰能力,对改善低轨卫星测控链路的抗干扰性能具有一定的参考价值.
묘술료저궤위성측공련로적성시전파배경,학정료대응적신도모형급기전형방진치.제출료일충혼합직확/도빈확빈방안,건립료해방안적Systemview동태방진모형,병재불동간우양식하대해방안적항간우성능진행료방진여분석.방진결과표명제출적방안괄합저궤위성측공련로,구유교강적항련속파간우능력,대개선저궤위성측공련로적항간우성능구유일정적삼고개치.
The city transmission environments of LEO satellite telemetry & control link is described, and the relevant channel models and the typical simulation parameters are introduced. A hybrid direct sequence fre-quency and hopping spread spectrum scheme is proposed. The simulation model is presented firstly, and then anti-jamming performance simulation and analysis axe carried out in the different jamming modes. The simula-tion proves that the proposed scheme can be suited to the LEO satellite link and possesses stronger ant-jam-ming capability under the condition of multi-tone jamming. The research of the thesis has some significance to the anti-jamming performance enhancement of LEO satellite link.