摘要
首先介绍了对信号进行频谱分析的原理,并根据软件无线电和虚拟仪器的思想,基于NI(National Instruments)的PXI硬件模块和LabVIEW软件平台,实现了100 kHz^2.7 GHz频率范围内的宽带频谱扫描、频率测量、带内功率测量、邻波道功率测量、信号带宽测量等功能。最后,利用该测试平台对实际信号进行测量,并与频谱分析仪的测量结果进行比较,验证了该方案的有效性。
In this paper, the principle of signal spectral analysis is introduced first. According to the idea of software radio and virtual instruments, a broadband spectrum scanning, frequency measurements, In-band power measurements, adjacent channel power measurements and bandwidth measurements in the frequency range of 100 KHz to 23GHz is achieved, based on the PXI hardware modules of NI （National Instruments） and LabVIEW software plafforrrr At last, the actual signal is measured using the test platform, and the results are compared with the ones of the spectrum analyzer, which verifies the effectiveness of this method.
出处
《电子设计工程》
2012年第21期93-96,共4页
Electronic Design Engineering
