Optimum aperture monopulse excitations

Sanzgiri, S.; Butler, J.K.; Voges, R.

doi:10.1109/tap.1972.1140192

Cited by 3 publications

(3 citation statements)

References 13 publications

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“…The optimum ASF optained for the circular aperture with N = 10 is presented in Table I1 along with the results obtained by Sanzgiri et al [7] for b/a = 0. Here also the results are seen to compare well for -25 dB SLL where the number of terms taken in both cases are equal.…”

Section: B Optimization Of Difference Mode Asfmentioning

confidence: 82%

“…[7] for zero blockage, for comparison. These results are for line source whereas the one obtained by the proposed method are for circular aperture.…”

Section: A Sum-mode Df Optimization Resultsmentioning

confidence: 99%

“…Bayliss [6] has used an ideal difference pattern similar to Taylor's equal sidelobe pattern with optimum properties, suitably modified to obtain the required sidelobe taper. Sanzgiri et al [ 7 ] have reported an eigenvalue method to optimize the performance indices, such as directivity, beam efficiency: and angular sensitivity of the monopulse aperture distribution with constraint on the sidelobe level. AU these methods are confined to regular aperture geometries, such as linear, circular and rectangular apertures, and cannot be easily applied for the case of blocked aperture.…”

Section: Introductionmentioning

confidence: 99%

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Constrained optimization of monopulse circular aperture distribution in the presence of blockage

Sachidananda

Ramakrishna

1983

IEEE Trans. Antennas Propagat.

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Absfracf-A method of synthesizing aperture antenna excitations to obtain optimum performance in the presence of aperture blockage is presented. The problem of optimizing the performance indices such as directivity and angular sensitivity is formulated as an N-dimensional minimization problem, with constraint on the sidelobe level. In most cases, the objective function is nonlinear with multiple minima which does not yield readily to gradient methods. A simplex search method is used in the study for optimizing the performance index. The sidelobe level (SLL) constraint has been incorporated using the penalty function method. The method is applied to circular monopulse aperture distribution with circular blockage to obtain maximum directivity factor (DF) in the sum mode and maximum angular sensitivity factor (ASF) in the difference mode, with sidelobe level constraint. The effect of blockage on the maximum directivity and maximum angular sensitivity is studied for various sidelobe level constraints.

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Section: B Optimization Of Difference Mode Asfmentioning

confidence: 82%

“…[7] for zero blockage, for comparison. These results are for line source whereas the one obtained by the proposed method are for circular aperture.…”

Section: A Sum-mode Df Optimization Resultsmentioning

confidence: 99%