Title :
A study on 94 GHz band millimeter-wave RCS characteristics: numerical comparison with 35 GHz
Author :
Yamaguch, Hiroyulu ; Kajiwara, Aluhiro ; Dozono, Shigeru ; Nishiyama, F. ; Tanaka, Takash
Author_Institution :
Third Res. Center, Japan Defense Agency, Tokyo, Japan
Abstract :
This paper presents numerical results of 94 GHz radar cross section (RCS) characteristics for the purpose of signal-to-clutter ratio (S/C) enhancement feasibility study. Our analysis method is an electromagnetic field integral equation based on physical optics and a random rough surface with perfect conductivity is postulated as the scatterer. It is found that the RCS at 94 GHz is independent of the radar incident angle and cross-polarization is greater at 35 GHz. The unique polarization characteristics is also seen especially at 94 GHz, where ellipticity and tilt angle are fluctuating randomly. Using the analyzed RCS results, we discuss the capability of S/C enhancement at 94 GHz
Keywords :
electromagnetic fields; electromagnetic wave polarisation; electromagnetic wave scattering; integral equations; millimetre wave measurement; millimetre wave propagation; physical optics; radar applications; radar clutter; radar cross-sections; 35 GHz; 94 GHz; EHF; cross-polarization; electromagnetic field integral equation; ellipticity; experiment; incident angle; millimeter wave RCS characteristics; numerical results; perfect conductivity; physical optics; polarization characteristics; radar cross section; random rough surface; scatterer; signal to clutter ratio enhancement; tilt angle; Conductivity; Electromagnetic analysis; Electromagnetic fields; Integral equations; Millimeter wave radar; Millimeter wave technology; Physical optics; Radar cross section; Rough surfaces; Surface roughness;
Conference_Titel :
Radar Conference, 1997., IEEE National
Conference_Location :
Syracuse, NY
Print_ISBN :
0-7803-3731-X
DOI :
10.1109/NRC.1997.588266
