Detecting method for broadband of target signal based on fast frequency spectrum mask matching
A target signal and spectrum template technology, applied in the field of target signal broadband detection and broadband automatic detection technology, can solve problems such as inability to apply real-time performance, large computational load, etc., and achieve good generalizability, reduced computing time, and modularity. high effect
Active Publication Date: 2018-06-05
NO 54 INST OF CHINA ELECTRONICS SCI & TECH GRP
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Problems solved by technology
However, the existing specific signal broadband detection algorithm based on template matching needs to calculate the correlation coefficient point by point sliding, which has a large amount of calculation and cannot be applied to applications with high real-time requirements.
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[0035] refer to figure 1 , the principle block diagram of the embodiment of the present invention is as follows figure 1 As shown, it consists of a monitoring computer 1, a broadband digital receiver 3, a network switch 4 and a specific signal automatic detection server 10. Wherein the automatic signal detection software on the specific signal automatic detection server 10 consists of a signal spectrum template library construction module 2, a spectrum calculation module 5, a spectrum template selection module 6, a fast template matching module 7, a narrowband correlation value discrimination module 8, and a detection result display module 9 composition. Wherein, the specific signal automatic detection server 10 is a general X86 architecture. Among them, 1, 3, 4, and 10 are connected through Ethernet.
[0036] Specific signal broadband detection method based on fast spectrum template matching, it is characterized in that comprising steps:
[0037] ①The monitoring computer ...
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The invention relates to a detecting method for a broadband of a target signal based on fast frequency spectrum mask matching and relates to an automatic detection technology of the broadband of a specific protocol signal in the field of radio frequency spectrum monitoring and management. The detecting method disclosed by the invention has the functions of detecting a signal with a specific frequency spectrum shape in inputted broadband sampling data; firstly, constructing a standard frequency spectrum mask of a to-be-detected signal and calculating a frequency spectrum of input data; detecting whether the to-be-detected signal exists in the input data by fast point-by-point sliding template matching of the standard frequency spectrum mask and an input data frequency spectrum or not, if yes, outputting a frequency point where the signal is located and the amplitude of the signal. The invention designs a calculation method for a running correlation coefficient based on recurisive calculation and fast Fourier transform. By means of the calculation method, fast correlation matching detection of the target signal can be realized. The detection method disclosed by the invention is particularly suitably applied to application scenes of detecting the signal with the specific frequency spectrum shape in broadband receiving data in the field of radio frequency spectrum monitoring.
Description
technical field [0001] The invention relates to a target signal broadband detection method based on fast frequency spectrum template matching. It deals with wideband automatic detection techniques for protocol-specific signals in the field of radio spectrum monitoring and management. It is especially suitable for the application scenario of detecting signals with specific spectral shapes in broadband received data in the field of radio spectrum monitoring. Background technique [0002] Specific signal broadband detection technology is one of the key technologies in the field of radio spectrum monitoring and management, and plays a vital role in the wideband automatic control of target signals. The algorithm based on spectral template matching is an effective method for broadband detection of specific signals. It can judge whether a specific signal exists in the input broadband data by calculating the correlation coefficient between the broadband spectrum of the input data a...
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CPCG01R23/16
Inventor张润生张海瑛王晓亚赵欢欢施昉岳新宇耿赟卓建荣崔焱李杰
OwnerNO 54 INST OF CHINA ELECTRONICS SCI & TECH GRP