BOC(10,5)卫星导航信号捕获算法研究及软件仿真

二进制偏移载波（BOC）调制是一种新的导航信号调制方式,能够实现频谱分离并能够充分利用整个频带,具有十分重要的应用价值和发展前景。详细分析了BOC(10,5)调制信号的特性,并对功率谱密度函数、自相关特性等进行了分析和仿真。提出了一种基于快速傅里叶变换（FFT）的分段迭代快速捕获算法,旨在提高信号快速捕获的准确性。通过仿真验证表明,软件接收机成功实现了对BOC(10,5)调制信号的捕获,可以为导航信号处理算法研究以及导航接收机开发提供良好的技术支撑。

Acquisition Algorithm Research and Soft Simulation for BOC(10,5) Satellite Navigation Signal

Binary Offset Carrier (BOC) modulation is a type of new modulation method, which realizes the split of spectrumto make full use of the available frequency bands, and has important application value and development prospect. The signalcharacteristic of BOC(10,5) is analyzed in detail, the power spectral density function and correlation function is analyzed andstimulated. A segmented interative fast acquisition algorithm based on Fast Fourier Transform (FFT) is proposed, aiming to improveaccuracy of fast signal acquisition. The simulation and experimental results are given to demonstrate that the software receiver canperform BOC(10,5) modulation signal acquisition successfully, which can provide a good technical support for navigation signalprocessing algorithm research and navigation receiver development.