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Compensation of radome effects in small airborne monopulse arrays by convex optimization
KTH, Skolan för elektroteknik och datavetenskap (EECS), Elektroteknisk teori och konstruktion.ORCID-id: 0000-0001-7269-5241
2018 (engelsk)Inngår i: IET Conference Publications, Institution of Engineering and Technology , 2018, nr CP741Konferansepaper, Publicerat paper (Fagfellevurdert)
Abstract [en]

The quality of small array antennas in airborne monopulse systems can be significantly reduced by the radome. We therefore present a convex optimization approach to minimize radome effects in monopulse arrays. This is achieved by using active element patterns in the optimization to determine the excitation weights. Simulation results for a BoR array with 48 elements and an extended hemispherical radome are presented. We demonstrate that it is possible to reduce the side-lobe level by 3.5 dB by taking radome effects into account in the optimization. This approach also results in an increased gain, particularly at large scan angles. Furthermore, the presented approach allows the monopulse slope to be indirectly specified as a design parameter. It is shown that the trade-off between the monopulse slope coefficient and the side-lobe level is approximately linear.

sted, utgiver, år, opplag, sider
Institution of Engineering and Technology , 2018. nr CP741
Emneord [en]
Airborne ESM, Convex optimization, Monoulse DOA estimation, Phased array antennas, Radomes, Economic and social effects, Active element patterns, Design parameters, DOA estimation, Large scan angle, Optimization approach, Sidelobe levels, Antenna phased arrays
HSV kategori
Identifikatorer
URN: urn:nbn:se:kth:diva-247468Scopus ID: 2-s2.0-85057296300OAI: oai:DiVA.org:kth-247468DiVA, id: diva2:1302673
Konferanse
12th European Conference on Antennas and Propagation, EuCAP 2018, 9 April 2018 through 13 April 2018
Merknad

QC 20190405

Tilgjengelig fra: 2019-04-05 Laget: 2019-04-05 Sist oppdatert: 2019-05-21bibliografisk kontrollert

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Frid, HenrikJonsson, B. Lars G.

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