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299 t ACKNOWLEDCMEM The authors wish to thank the technical staffs of the Nippon Electric Co., Ltd., IC Division, for useful discussions and for providing the experimental samples. Fig. 4. Slowing factor versus width-to-height ratio o/b. Open circles: experimental values. Solid lines: theoretical values. Dashed lines: slowing factor in the infinitely wide… (More)
On the design of digital filters with coefficients of limited word length, " IEEE Trans. Audio Electroacoust., vol. word length problem for digital filters, " IEEE Trans. Circuits R. E. Crochiere, " A new statistical approach t o the coefficient Analysis of quantization mors in the direct form for finite impulse response digital filters, " [ 301 R. E.… (More)
It is then seen that the signal estimate remains constant with random input frequency regardless of frequency redundancy whereas noise with frequency redundancy is decreased in accordance with a frequency sampling efficiency gain in Table I. This sampling efficiency is (FcK))/(F(w)) = (F(K))/(l.53). The effective number of integration samples with unity… (More)
T he explosive growth in digital signal processing began in the decade of the 1960s, when researchers discovered how to use recursive digital filters to simulate analog filters. I was one of those researchers. The other (older) digital filters were nonrecursive. The two kinds of filters have different characteristics, which are often complementary. At that… (More)
s This article recounts the development of radar signal processing at Lincoln Laboratory. The Laboratory's significant efforts in this field were initially driven by the need to provide detected and processed signals for air and ballistic missile defense systems. The first processing work was on the Semi-Automatic Ground Environment (SAGE) air-defense… (More)