Communications: directive radio wave systems and devices (e.g. – With particular circuit – Digital processing
Patent
1994-01-12
1995-09-05
Sotomayor, John B.
Communications: directive radio wave systems and devices (e.g.,
With particular circuit
Digital processing
342160, 342162, 342196, 342204, G01S 13526, G01S 1353, G01S 13534
Patent
active
054482453
ABSTRACT:
The present invention relates to a signal processing apparatus for use in radars, which can detect a target from a receive signal by digital processing. An A-D converter samples the receive signal by a clock signal A, and quantizes the sampled value. A clock accelerator generates a clock signal B having a frequency which is N times a frequency of the clock signal A. A signal latch holds an output from the A-D converter for an N clock period of the clock signal B. A digital low-pass filter performs low-pass filtering processing with respect to an output from the signal latch with the clock signal B as an operating clock. As a result, an output from the digital low-pass filter includes a more approximate value of the maximum value in the receive signals. Therefore, it is possible to provide improved accuracy of the target detection by a target detector.
REFERENCES:
patent: 4057800 (1977-11-01), Ganz
patent: 4222050 (1980-09-01), Kiuchi
patent: 4654665 (1987-03-01), Kiuchi et al.
patent: 5200755 (1993-04-01), Matsuda et al.
patent: 5235338 (1993-08-01), Hsiao et al.
Mitsubishi Denki & Kabushiki Kaisha
Sotomayor John B.
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