摘要
本文给出了连续波信号功率测量的DSP处理技术。该技术充分利用了DSP提供的链式DMA和硬件中断等基本技术,成功地实现了数据接收与处理的同步,进而通过构造去斩波序列成功将连续波信号还原,经过量程判断之后,准确地计算出连续波信号采样数据的平均值。该技术已经在国内某新型微波功率计中得到成功应用,而且达到了很高的测量准确度,功率测量灵敏度可达-70dBm。该技术可广泛应用于具有连续波功率测量功能模块的测量仪器中。
This article gives a kind of DSP technique in the power measurement of the CW signals. This technique made full use of the functions of DMA Chaining and hardware interrupts of DSP, realized the synchronousness successfully between receiving and processing of the data,Then it restored the CW signal successfully by structuring a cancelling-chopper-sequence. After the range judgement,it computed the average value of the CW sample data accurately. The technique has already got successful application in a kind of domestic microwave power meter, and the power meter has high accuracy of power measurement, and its sensitivity can reach -70dBm. This technique can be widely applied in instruments which have the function of CW signal power measurement.
出处
《国外电子测量技术》
2007年第9期56-58,共3页
Foreign Electronic Measurement Technology
