Radome effect on the miss distance of a radar homing missile

✍ Scribed by Susumu Miwa

• Publisher: John Wiley and Sons
• Year: 1998
• Tongue: English
• Weight: 231 KB
• Volume: 81
• Category: Article
• ISSN: 8756-6621
• DOI: 10.1002/(sici)1520-6424(199807)81:7<14::aid-ecja2>3.0.co;2-4

✦ Synopsis

The warhead of a radar homing missile is covered by a radome. If its thickness is not properly controlled, the miss distance increases because the direction of the wave front changes. The initial portion of this paper describes the definition of the radome error slope and the process to incorporate this into the block diagram. The block diagram and the parameter nominal values are shown, then a stability analysis under the condition of the system being linear is presented, and the method of covariance analysis is discussed. Simulation results are given for three cases. The first is a comparison between the previously used third-order model and the newly adopted fifth-order model, where the latter yields more rigorous results and is more suitable for this subject. The second is a parameter analysis in which relations of constant radome error slope during flight versus miss distance are shown for various parameter changes. It is more practical to consider the radome error slope change as a sinusoidal function of flight time. The third section discusses the effect of stepped and sinusoidally changing radome error slope on the miss distance.