Demodulation method, device, spectrum detector and computer-readable storage medium
A demodulation method and computer technology, applied in the field of signal processing, can solve problems such as insufficient radio monitoring/monitoring technology
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no. 1 example
[0028] see figure 2 , which is a demodulation method applied to the above-mentioned spectrum detector 100 provided by the embodiment of the present invention, which will be combined below figure 2 Describe the steps involved.
[0029] Step S101: Receive a radio signal.
[0030] When the spectrum detector detects a radio signal, it receives the detected radio signal.
[0031] Step S102: Determine whether the modulation method adopted by the radio signal can be identified based on a preset method.
[0032] After receiving the radio signal, if you want to further know the content contained in the signal, you first need to demodulate the received signal, because the received radio signal is not a signal modulated according to the previously agreed modulation method, but an unknown Signal. Therefore, it is necessary to determine whether the modulation method adopted by the radio signal can be identified. Further, with image 3 The shown method flow diagram illustrates this ...
no. 2 example
[0110] As an implementation, please refer to Figure 4 , this embodiment provides a demodulation method applied to the above-mentioned spectrum detector 100, which will be combined below Figure 4 Describe the steps involved.
[0111] Step S301: Receive a radio signal.
[0112] This step is the same as step S101, please refer to step S101 for specific description.
[0113] Step S302: Determine whether the modulation method adopted by the radio signal can be identified based on a preset method.
[0114] This step is the same as step S102, please refer to step S102 for specific description, wherein, if the modulation method adopted by the radio signal cannot be identified, then step S305 is executed.
[0115] Step S303: Determine whether a demodulation method corresponding to the modulation method adopted by the radio signal can be found.
[0116] This step is the same as step S103, please refer to step S103 for specific description.
[0117] Step S304: Demodulate the radio...
no. 3 example
[0122] The embodiment of the present invention also provides a demodulation device, such as Figure 5 shown. The demodulation device 110 includes: a receiving module 111 , a first judging module 112 , a second judging module 113 , a selecting module 114 and a saving module 115 .
[0123] The receiving module 111 is configured to receive radio signals.
[0124] The first judging module 112 is configured to judge whether the modulation method adopted by the radio signal can be identified based on a preset method. Further, as Image 6 As shown, the first judging module 112 also includes: a preprocessing submodule 1121 , a feature extraction submodule 1122 , and a judging submodule 1123 .
[0125] Wherein, the preprocessing submodule 1121 is configured to preprocess the radio signal to obtain a preprocessed signal.
[0126] The feature extraction sub-module 1122 is configured to extract a feature quantity representing a modulation mode based on the preprocessed signal.
[012...
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