Template setting and template detecting method based on frequency spectrum analysis
A technology of template detection and spectrum analysis, which is applied in the field of spectrum monitoring, can solve the problems of not considering signal influence, difficult application of embedded devices, cumbersome identification process, etc., and achieves friendly human-computer interaction interface, low hardware platform configuration requirements, and real-time identification fast effect
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[0033] Implementation steps of the present invention: as figure 1 shown
[0034] Step 1; Spectrum data generation
[0035] The front end of the system realizes AD data acquisition, digital down-converter and fast Fourier transformation through FPGA. The spectrum data generation unit reads the spectrum data of FPGA through DMA mode. Open up two data areas A and B in the storage area, the size of the area is 615 points of data, and each data is 16 bits. The spectrum data is received and stored in a ping-pong structure. Assume that the new data is currently stored in data area A, and the data in data area B is stored and processed at the same time. After the processing of data area B is completed, wait for the completion of data area A to receive. Once the reception is completed, data area A is converted to storage and calculation. Processing flow, at the same time, data area B is converted to receive new data flow, so data areas A and B take turns to receive data and process...
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