Communications: directive radio wave systems and devices (e.g. – With particular circuit – Complex signal
Patent
1986-10-15
1988-09-20
Tubbesing, T. H.
Communications: directive radio wave systems and devices (e.g.,
With particular circuit
Complex signal
342196, 342201, G01S 744
Patent
active
047728892
ABSTRACT:
A device for calculating a discrete, moving window and non-recurrent Fourier transform, especially applicable to the processing of a pulse compression radar signal. The device includes N stages which, on the basis of samples of the input signal, each give a signal of the form: ##EQU1## where k is the index of the stage (O<k<N), m the index of the window and N the number of samples in the window, N being a multiple of four. The complex rotations of the expressions (1) and (3) are each broken down into a rotation in the first quadrant of the complex plane, a rotation common to N stages and a supplementary rotation specific to each stage, achieved by addition-subtraction.
REFERENCES:
patent: 3778606 (1973-12-01), Schmitt et al.
patent: 4093994 (1978-06-01), Nussbaumer
patent: 4591857 (1986-05-01), Thor
Dillard, "Recursive Computation of the Discrete Fourier Transform with Applications to an FSK Communication Receiver," IEEE National Televommunication Conference, Institute of Electrical and Electronics Engineers, San Diego, Dec. 2-4, 1974, pp. 263-265.
"Thomson-CSF"
Barron Jr. Gilberto
Tubbesing T. H.
LandOfFree
Device for calculating a discrete fourier transform and its appl does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Device for calculating a discrete fourier transform and its appl, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Device for calculating a discrete fourier transform and its appl will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1751102