Antenna arrangement for a radar surveillance method for target locating with altitude acquisition

US4353073A · kind A · utility

Assignee

• Siemens Aktiengesellschaft · DE

Inventors

• Anton Brunner · Starnberg, DE
• Erwin Kress · Herrsching am Ammersee, DE

Key dates

• Filing date: Oct 27, 1980
• Grant date: Oct 5, 1982
• Expiry date: Oct 27, 2000

Classification

• Technology area (CPC H): Electricity
• CPC primary: H01Q25/00
• WIPO field: Telecommunications
• WIPO sector: Electrical engineering

Abstract

An antenna arrangement for a radar surveillance method for target locating having altitude acquisition provides that, for the purpose of level comparison, a plurality of overlapping lobes lying above one another are generated by a reflector rotating around a vertical axis together with a primary radiator row arranged essentially vertically. In employing a paraboloid of revolution as the reflector, a vertical primary radiator row is arranged around its focal point. Given more greatly deflected beams whose exciters are at a greater distance from the focal point, the gain in such an antenna decreases as the side lobes increase, limiting the elevation angle range. A single parabolic cylinder reflector generating a beam and focusing only in the horizontal plane is employed as the reflector, the individual radiators of a primary radiator row being arranged along its focal line. The horizontal extent of the primary radiators is so small and the vertical extent is so great that the desired bundling of the individual lobes lying one above another arises. The antenna arrangement according to the invention can be advantageously employed in an X-band radar having altitude acquisition.