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Acoustical Measurements (rev.) by L. Beranek

By L. Beranek

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J. H. Davis, W. L. Peters, and W. J. 9-meter antenna at 86 GHz," IEEE Trans. Instru. , vol. IM-32, pp. 102109, 1983. 7. , "Surface diagnosis of large reflector antennas using microwave holographic metrology -- An iterative approach," Radio Science, vol. 13, pp. 1205-1217, 1984. 8. , "Microwave holography of large reflector antennas Simulation algorithms," IEEE Trans. , vol. AP-33, pp. 1194-1203, 1985 (see minor corrections in vol. AP-34, pp. 853, 1986). 9. Rochblatt D. , Y. Rahmat-Samii, and J.

This may also be required to improve the extended zero-in domain used in applying the FFT. Many algorithms are available to accomplish this; however, it has been found that an iterative algorithm similar to the one used in [14] is simple to apply and provides improved results. The procedure basically follows the steps shown in Fig. 7, and relies on the fact that the induced current has bounded support extended to the diameter of the reflector antenna. This allows one to introduce a truncation operator in step 2 of Fig.

30:249-259, 1971. [BN71] E. J. Newman. An h extremal problem for polynomials. Proc. Amer. Math. , 29:474-481, 1971. [BN73] E. J. Newman. An extremal problem for the geometric mean of polynomials. Proc. Amer. Math. , 39:313317, 1973. [BN74] E. J. Newman. The minimum modulus of polynomials. Proc. Amer. Math. , 45:463-465, 1974. S. J. Newman. Null steering employing polynomials with restricted coefficients. IEEE Trans. Antennas and Propagation, 36(2):301-303, 1988. S. Byrnes. L 2 approximation with trigonometric n-nomials.

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