一种采用fpga生成二进制偏移载波信号的方法

Method for generating binary offset carrier signal by adopting FPGA (Field Programmable Gate Array)

Abstract

本发明公开了一种采用FPGA生成二进制偏移载波信号的方法,包括子载波调制的步骤、载波调制的步骤和滤波步骤。其中,在子载波调制步骤中,根据伪码信号产生相位状态的读取地址,根据相位状态的读取地址查表获得相位信息,进而获得I、Q两路幅值信息。本发明给出了采用FPGA实现AltBOC信号的整个调制过程的方法。
The invention discloses a method for generating a binary offset carrier signal by adopting an FPGA (Field Programmable Gate Array), comprising the steps of subcarrier modulating, carrier modulating and filtering. During the step of subcarrier modulating, a reading address of a phase state is generated according to a pseudo code signal, a table is lookup according to the reading address of the phase state to obtain phase information, and further amplitude information of an I circuit and a Q circuit are obtained. The invention provides a method for realizing the whole modulating process of an AltBOC signal by adopting the FPGA.

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Cited By (2)

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    CN-105116425-ADecember 02, 2015西安空间无线电技术研究所Parallel AltBOC navigation signal intermediate frequency generation method
    CN-105116425-BJuly 28, 2017西安空间无线电技术研究所一种并行AltBOC导航信号中频生成方法