Citation: Q. Shirman, Y. Ding, J. Ghadaki, H. Chan, , S. Lin, Q.
Chen, W. Xu, and Z. Chen, "Low-resolution radar target recognition based on gray-level map features," Modern Radar , Vol. Leung, H. Zhang, H. Wang, and W. Jiang, "Aircraft target classification based on registration information for low-resolution radar," Systems Engineering and Electronics, , Vol. Pouliguen, P.
Bell, , M. Piazza, E.
Shop now and earn 2 points per $1
Martin, J. Yang, S. Mulgrew, "Analysis of the effects of blade pitch on the radar return signal from rotating aircraft blades," Proceedings of IET International Radar Conference, , , Yoon, S. Kim, and Y.sisedhakingpa.tk
Download Computer Simulation Of Aerial Target Radar Scattering, Recognition, Detection,
Kim, "Helicopter classification using time-frequency analysis," Electronics Letters , Vol. Chen, F. Chen, V. Zhuang, Z. Liu, and X.
ISBN 13: 9781580531719
However, conical reentry vehicle decoys have RCS which decrease with, and as compared to, their base diameter. Consequently, mechanical and electrical constraints are in opposition.
This fact motivates search for ways to achieve large forward RCS levels for small decoys. Among the known passive means for increasing small conical body RCS is attachment of unfurlable scattering structures to the decoy which erect after or upon decoy release. Other means include modifications of the decoy body to increase the forward RCS. The present invention lies in the second catagory, providing a structural improvement for, and a method of, small decoy reentry vehicle RCS enhancement without the use of unfurlable attachments.
More specifically, I have invented an improvement, and a method, each of which yields a large forward RCS, for a decoy of a conical reentry space vehicle having a small base, over a broad range i. I have, thereby, significantly advanced the state-of-the-art.
This invention relates to a structural improvement for, and a method of, increasing the forward RCS of a conical reentry space vehicle without using appendages and the like external of the reentry vehicle. These objects, and still other related objects, of this invention will become readily apparent, after a consideration of the description of the inventive structural improvement and method, and after reference to the Figures of the drawings. With reference to FIG.
The reentry vehicle 10 has or, more accurately, "forms" a radar cross section, and has a dielectric preselected or predetermined dielectric constant which will be discussed later herein. The preferred embodiment of the improvement comprises, in essence, a reflecting step 14 at the base portion 13 of the heatshield and reentry vehicle 10 which has certain characteristics that will be discussed later herein. Also shown in FIG.
Said portion is shown in FIG. The ray 15 is shown thereafter entering the dielectric heatshield 10 and being totally reflected twice within the reflecting step 14, and then emerging outward of the heatshield 11 in the direction of the nose, with said direction indicated by an arrow and a legend.
With regard to my inventive method for augmenting the radar cross section of a conical reentry space vehicle shown in FIGS. A conical reentry space vehicle, or decoy thereof, that is designed with a low-loss heatshield will, when illuminated, support a dielectric mode within, or on, the air-dielectric boundary. By choice of dielectric thickness, dielectric constant, and dielectric shape near the rear, or base, of the reentry vehicle, the forward RCS of the reentry vehicle may be increased to values: which are in excess of the specular return from a metal reflector of diameter equal to the cone base of the reentry vehicle; and, which are 10 to 20 dB in excess of those from a metal cone of equal base diameter.
Temasek Defence Systems Institute
Together these two conditions guarantee that complete internal reflection of an impinging illuminating i. It is abundantly clear from all of the foregoing, and from the Figures of the drawings, that the stated and desired objects, and other related objects, of my invention have been achieved. While there have been shown and described the fundamental features of my invention, as applied to a preferred embodiment and as set forth in an inventive method, it is to be understood that various substitutions, omissions, adaptations, and the like may be made by those of ordinary skill in the art without departing from the spirit of the invention.
Structural improvement for, and method of, achieving radar cross section augmentation of a conical reentry space vehicle decoy having a dielectric heatshield by structuring the base of the decoy to meet certain conditions. Any incident radar signal impinging in a nose-on direction upon the external surface of the heatshield enters the heatshield, is completely double reflected within the reflecting step of the heatshield, and is re-directed out of the heatshield and in the opposite direction i.
The forward i.
- Simulation of interference and signals in subsurface radar;
- VTLS Chameleon iPortal Browse Results.
- Responding to Troubled Youth?
Related Computer Simulation of Aerial Target Radar Scattering, Recognition, Detection, & Tracking
Copyright 2019 - All Right Reserved