Accession Number : ADD010543

Title :   Programmable LFM Signal Processor.

Descriptive Note : Patent Application,

Corporate Author : DEPARTMENT OF THE AIR FORCE WASHINGTON DC

Personal Author(s) : Thor,Robert C

Report Date : 11 Jul 1983

Pagination or Media Count : 18

Abstract : The linear frequency modulation signal processor may be programmed to be a matched filter for any pulse compression ratio less than or equal to the square of the number of bandpass filters. The processor is implemented by using a fast Fourier transform (FFT) for the filter bank. The implementation shown assumes digital processing at baseband using in-phase and quadrature (I and Q) channels and a FFT for the filter bank. The I and Q channels are fed through a sidelobe filter, a short input tapped delay line, and a set of M complex multipliers to the FFT. The FFT outputs are connected to a long tapped delay line through a second set of complex multipliers whose outputs are summed in the long tapped delay line summer. (Author)

Descriptors :   *Patent applications, *Signal processing, *Processing equipment, *Computer programming, Delay lines, Matched filters, Frequency modulation, Fast fourier transforms, Bandpass filters, Pulse compression, Sidelobes, Radar, Inventions

Subject Categories : Computer Programming and Software
      Active & Passive Radar Detection & Equipment

Distribution Statement : APPROVED FOR PUBLIC RELEASE