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A noise insensitive solution to an ambiguity problem in spectral estimation

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3 Author(s)
W. S. McCormick ; Dept. of Electr. Eng., Wright State Univ., Dayton, OH, USA ; J. B. Y. Tsui ; V. L. Bakkie

The instantaneous frequency measurement (IFM) receiver is capable of measuring the center frequency of single frequency pulses over a wide range (bandwidth) of center frequencies. Because of various constraints, the frequency resolution requirement results in long correlator delay times that reduce the single correlator bandwidth. A large bandwidth can be achieved only if two or more correlators are used. The problem of estimating frequency is then reduced to the simultaneous congruence problem of number theory. A design procedure is presented for solving the congruence problem for a given amount of noise protection, a stated frequency resolution, a minimum bandwidth, and a fixed level of precision (bits) in the IFM receiver

Published in:

IEEE Transactions on Aerospace and Electronic Systems  (Volume:25 ,  Issue: 5 )