| 摘要: |
| 针对研制USB相位解调系统中出现的除0问题和ROM容量限制问题，通过研究坐标旋
转数字计算（Coordinate Rotation Digital Computer，CORDIC）方法，实现了基于CORDIC
算法的反正切模块，并利用此模块设计了一种针对统一S频段（Unified S Band
, USB）系统的相位解调器。仿真实验结果证明，这种相位解调器能够较好地解决上述问题
。另外，设计了一种通用型带通滤波器，用于USB基带信号中副载波和各测距音分量的分离滤波
。 |
| 关键词: 统一S频段系统 应答机 相位解调 坐标旋转数字计算方法 带通滤波器 |
| DOI： |
|
| 基金项目: |
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| Improved design of a USB phase demodulator |
| LIANG Hao,ZHAO Qi,LIU Xi |
| () |
| Abstract: |
| For the problem of dividing zero and ROM capacity limitation during th
e development of the Unified S Band(USB) phase demodulation system, through the
study of CORDIC(Coordinate Rotation Digital Computer) algorithm,
an arctangent module based on CORDIC algorithm is realized. By using this modul
e, a phase demodulator for the USB system is designed.The simulation result shows that
the two above-mentioned problems can be solved well. Besides,a b
and-pass filter for dividing the subcarriers of the USB signal is designed. |
| Key words: unified S band system transponder phase demodulation CORDIC algorithm band-pass filter |
《电讯技术》编辑部 