Inverse synthetic aperture radar imaging method based on multi-task Bayesian compression perception
A technology of Bayesian compression and inverse synthetic aperture, applied in the field of radar, can solve the problems of poor stability and high imaging complexity, and achieve the effect of high imaging stability and reduced imaging complexity
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[0032] Specific implementation method
[0033] The present invention will be further described in detail below with reference to the drawings and embodiments.
[0034] Reference figure 1 The specific implementation steps of the present invention are as follows:
[0035] Step 1: Obtain the echo signal S r (τ,t).
[0036] (1a) The radar continuously transmits the chirp signal p(τ) to the sparse target scene:
[0037]
[0038] Among them, rect(·) is a rectangular window function, τ is time, T p Is the pulse duration, j is the imaginary unit, f c Is the carrier frequency of the chirp signal, μ is the frequency modulation slope of the chirp signal;
[0039] (1b) The radar receives the echo pulse reflected from the sparse target scene and obtains the echo signal S r (τ,t), its expression is:
[0040]
[0041] Among them, τ is the fast time, τ r Is the delay time, t is the slow time, X is the distance of the sparse target scene, Y is the azimuth of the sparse target scene, f x,y Is the scatteri...
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