Parallel streamlined processing method for LFMCW array radar signals
A processing method, array radar technology, applied in the direction of radio wave reflection/re-radiation, using re-radiation, measuring devices, etc., can solve the problems of large computing time, multiple hardware resources, large amount of computing, etc., and achieve time complexity reduction , high computing efficiency, and the effect of reducing system cost
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[0026] Step 1, before the follow-up processing, the M distance units are used as the Doppler channel number N to perform a fast Fourier transform (FFT) of 2M points, discard the negative frequency components, and construct the echo signal and its fast time dimension and angle dimension (spatial ), Doppler dimension (slow time dimension) processing model.
[0027] Array element receiving signal
[0028]
[0029] In the formula, q is the number of samples in the fast time dimension of each cycle, P is the number of transmitted pulses, l is the array element number, A is the echo amplitude, e is the exponent, j is the imaginary number unit, and fr is the difference frequency in the distance dimension , d is the distance between the vibration elements, θ is the target angle, λ is the wavelength, fd is the Doppler frequency, T p is the chirp modulation cycle, Q is the number of samples in the fast time dimension of each cycle, and L is the number of array element channels.
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