Method for acquiring wide-band frequency modulation stepped chaos radar signal
A technology of radar signal and broadband frequency modulation, applied to radio wave measurement systems, instruments, etc., can solve the problems of limiting radar imaging resolution and chaotic signal bandwidth is not very high
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[0042] In order to better understand the technical solutions of the present invention, the implementation manners of the present invention will be further described below in conjunction with the accompanying drawings.
[0043] figure 1 It is a flow chart of a method for obtaining broadband FM stepped chaotic radar signals proposed by the present invention. The specific steps of the method include:
[0044] Step 1): Using the improved Logistic-Map chaotic map to generate the initial chaotic sequence, image 3 The initial chaotic sequence graph generated for the improved Logistic-Map chaotic map; Figure 4 The initial chaotic sequence power spectrum generated for the improved Logistic-Map chaotic map; such as image 3 and Figure 4 As shown, the initial chaotic sequence mean=0.00029165, variance=0.49988. Its mathematical model is represented by the following formula (1):
[0045] x i+1 =f(x i )=1-2·(x i ) 2 x i ∈(-1,1) (1)
[0046] Define the length M of the sub-pu...
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