导航卫星有效载荷非理想特性研究
发布时间：2019-06-04 04:11
【摘要】：为了衡量星上有效载荷核心器件的非理想特性对导航信号性能的影响,将相关损耗、鉴别器曲线过零点偏移和鉴别器曲线斜率失真作为评估指标,通过仿真评估了理想导航信号通过滤波器和高功放之后的信号质量,分析了信号的码跟踪精度和载波跟踪精度.仿真结果表明:同一滤波器对不同调制方式的信号有着不同的影响;高功放带来的过零点偏移的影响比滤波器小4个数量级,但是会带来明显的带外功率损耗.
[Abstract]:In order to measure the influence of non-ideal characteristics of on-board payload core devices on navigation signal performance, correlation loss, zero-crossing offset of discriminator curve and slope distortion of discriminator curve are taken as evaluation indexes. The signal quality of ideal navigation signal passing through filter and high power amplifier is evaluated by simulation, and the code tracking accuracy and carrier tracking accuracy of the signal are analyzed. The simulation results show that the same filter has different effects on the signals of different modulation methods, and the influence of zero-crossing offset caused by high power amplifier is four orders of magnitude smaller than that of the filter, but it will bring obvious out-of-band power loss.
【作者单位】： 北京跟踪与通信技术研究所;华中科技大学电子与信息工程系;
【基金】：国家重大科技专项基金资助项目(ZX03010105)
【分类号】：TN96.1
本文编号：2492464
[Abstract]:In order to measure the influence of non-ideal characteristics of on-board payload core devices on navigation signal performance, correlation loss, zero-crossing offset of discriminator curve and slope distortion of discriminator curve are taken as evaluation indexes. The signal quality of ideal navigation signal passing through filter and high power amplifier is evaluated by simulation, and the code tracking accuracy and carrier tracking accuracy of the signal are analyzed. The simulation results show that the same filter has different effects on the signals of different modulation methods, and the influence of zero-crossing offset caused by high power amplifier is four orders of magnitude smaller than that of the filter, but it will bring obvious out-of-band power loss.
【作者单位】： 北京跟踪与通信技术研究所;华中科技大学电子与信息工程系;
【基金】：国家重大科技专项基金资助项目(ZX03010105)
【分类号】：TN96.1
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