A method for identifying the modulation mode of satellite communication signals
A signal modulation and satellite communication technology, which is applied in the field of satellite communication, can solve the problems of low correct recognition rate, failure, and failure to consider the influence of raised cosine shaping on signal classification characteristics, etc., to achieve the effect of improving recognition rate and expanding categories
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[0045] The specific implementation of the present invention will be further described in detail below in conjunction with the accompanying drawings and examples. The examples are used to illustrate the present invention, but not to limit the scope of the present invention.
[0046] refer to figure 1 , the implementation steps of the present invention are as follows:
[0047] Step 1: Filter the received modulated signal r(t) to obtain the signal z(t) to be identified.
[0048] Since the satellite communication signal is a high-frequency signal with a frequency above 10Ghz, and the high-frequency signal is often mixed with a large amount of interference, which is not conducive to the later signal processing, so the received satellite communication signal should be band-pass filtered, and the high-frequency signal converted into an intermediate frequency signal.
[0049] In the present invention, the low-pass cut-off frequency w s , High-pass cut-off frequency w p The band-p...
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