# IEE Colloquium on Antenna Radar Cross-Section

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Displaying Results 1 - 9 of 9
• ### Calculation of radar cross section for an active array

Publication Year: 1991, Page(s):8/1 - 8/4
Cited by:  Patents (2)
| | PDF (164 KB)

Considers an active array antenna consisting of open ended waveguide elements, fed individually by active transmit/receive modules. Such an array may be required to operate in environments where other radars are attempting to locate it. These other radars could be aboard hostile ships or homing missiles. The way in which the active array scatters incident waves (its radar cross section) is therefo... View full abstract»

• ### The RCS of antennas on a missile-like body

Publication Year: 1991, Page(s):6/1 - 6/5
| | PDF (232 KB)

Describes one of the major activities using Roke Manor's anechoic chamber RCS measurement facility. This is a component of Roke Manor's activity in the measurement and prediction of radar signature and stealth characteristics. In particular, a study of the RCS of antennas is described-prompted initially by general interest, and by specific concerns, regarding the effects of mounting antennas on a ... View full abstract»

• ### IEE Colloquium on Antenna Radar Cross-Section' (Digest No.096)

Publication Year: 1991
| | PDF (60 KB)

The following topics were dealt with: variational approach to antenna RCS prediction; RCS of reflector antennas, field correlation; RCS of feed forms and reflector antennas; band pass radomes for RCS reduction; RCS sources microwave imaging; RCS of antennas on missile-like body; test fixture based antenna scattering measurements; and active array RCS View full abstract»

• ### Text-fixture-based antenna scattering measurements

Publication Year: 1991, Page(s):7/1 - 7/5
| | PDF (260 KB)

Text fixtures are commonly used to measure the radar cross-section (RCS) of flush-mounted antennas. These test fixtures are typically designed to provide a clutter-free region in which the antenna can be mounted. In addition, the test fixture provides an electromagnetic environment for the antenna which is similar to that found in the final application. Proper design of these test fixtures must ta... View full abstract»

• ### Microwave imaging of antenna RCS sources

Publication Year: 1991, Page(s):5/1 - 5/5
| | PDF (208 KB)

Microwave metrology of antennas is widely established for commissioning, quality assurance and diagnosis. Conventional schemes utilise the antenna as an active device in either transmit or receive mode. In a new approach to imaging structure the authors have studied the antenna as a passive scatterer from the point of view of its RCS. In this mode, the antenna response to an incident wavefront is ... View full abstract»

• ### Band pass radomes for reduced RCS

Publication Year: 1991, Page(s):4/1 - 4/9
Cited by:  Papers (3)
| | PDF (276 KB)

A frequency selective surface (FSS) comprising a square grid and a hexagonal array of discs is proposed as a means of reducing the radar cross section (RCS) of a radar bay over a wide (2 GHz to 14.6 GHz) frequency bandwidth. Results are presented in terms of transmission loss for an A' -type sandwich radome consisting of 2 FSS layers for normal and non-normal incidence. A single FSS layer on a GR... View full abstract»

• ### RCS of reflector antennas and feed horns

Publication Year: 1991, Page(s):3/1 - 3/4
Cited by:  Papers (1)
| | PDF (112 KB)

Considerable interest has been given to the reduction of the radar cross-section of military platforms. Careful design of the platform geometry and the judicious use of radar absorbent materials has resulted in significant reduction of the RCS response. As a result, attention has been given to the characterisation of the onboard sensors in order that they do not become the predominant source of re... View full abstract»

• ### Computation of the RCS of reflector antennas by field correlation

Publication Year: 1991, Page(s):2/1 - 2/4
| | PDF (188 KB)

Describes a method of calculating the radar cross-section of single or multiple reflector antennas by means of the field correlation theorem' of Wood (1980). The method is based on the physical optics approximation, and enables both direct and indirect' scattering (i.e. scattering by an object seen in a reflector) to be calculated as a surface integral over the scatterer. A similar correlation i... View full abstract»

• ### A variational approach to the prediction of antenna RCS

Publication Year: 1991
| | PDF (32 KB)

Summary form only given. Except in special circumstances, calculation of the radar cross-section (RCS) of scattering objects relies on the numerical solution of integral equations through a suitable approach, such as the method of moments. However, if the integral equations for the scattering of the electromagnetic radiation can be formulated in terms of a variational principle the effects of dist... View full abstract»