期刊文献+

SA建模的功率谱分析法

Power-Spectrum-Analysis Model for Reducing SA in GPS C/A Code Signal
下载PDF
导出
摘要 探讨了GPS导航信息中的SA建模的功率谱分析法,即采用FFT对TANS-2接收机记录的GPS静态定位误差样本作功率谱分析,通过最小二乘拟合获得SA的平稳线性模型,并用车载组合导航系统的仿真结果验证了近似模型的有效性。 SA contained in GPS C/A code signals brings, under certain conditions such as aircraft landing, disadvantases. For reduction of SA, I deem it very helpful to establish its model.We now explain how the model is established. GPS static position error samples recorded (Fig. 1) with TANS-2 receiver are analyzed in frequency domain via FFT to obtain the SA power spectrum. The SA linear model (the first order Markovian process) is obtained approximately via least-squares fit and its parameters are given in Table 1.Simulation results of the vehicle integrated navigation system are shown in Fads. 2, 3 and 4. The solid-line curve in each of the three figures is always closer to the short - dash curve and thus indicates clearly that the SA model is effective in the reduction of SA.
作者 秦永元
机构地区 西北工业大学
出处 《西北工业大学学报》 EI CAS CSCD 北大核心 1996年第3期454-457,共4页 Journal of Northwestern Polytechnical University
关键词 SA 建模 功率谱分析法 GPS 导航 SA, model, power spectrum
  • 相关文献

参考文献1

共引文献3

相关作者

内容加载中请稍等...

相关机构

内容加载中请稍等...

相关主题

内容加载中请稍等...

浏览历史

内容加载中请稍等...
;
使用帮助 返回顶部