EFFECT OF MULTIPATH AND SCATTERING ON ARRAY GAIN OF A LARGE ADAPTIVE BEAM FORMING PHASED-ARRAY

被引:2
作者
STEINBERG, BD
YADIN, E
机构
[1] Univ of Pennsylvania, Valley Forge, Research Cent, Philadelphia, PA, USA, Univ of Pennsylvania, Valley Forge Research Cent, Philadelphia, PA, USA
关键词
ADAPTIVE BEAM FORMING - ARRAY GAIN - MULTIPATH;
D O I
10.1109/TAP.1985.1143624
中图分类号
TM [电工技术]; TN [电子技术、通信技术];
学科分类号
0808 ; 0809 ;
摘要
An adaptive antenna array system large enough to obtain angular resolving power comparable to common optical systems is called a radio camera. Following an adaptive beam forming procedure the beam is open-loop scanned to get the desired images. Multipath and scattering of the energy reradiated from the target induce phase-front distortions. A theory has been developed showing that the loss in array gain due to the scattered field can be described by a simple relationship involving only two quantities: the strength of the scattered field relative to the direct field and a spatial correlation function associated with the scattering process. A series of experiments has been conducted to test the assumptions underlying the development of the theory, which appears to vindicate them. The theory and experiments are described. The theory is then used to determine the degradation in radio camera scanning performance for several important cases of interference caused by reflections. 8 refs.
引用
收藏
页码:481 / 487
页数:7
相关论文
共 8 条
[1]  
DORNY CN, 1977, VF107 U PENNS VALL F
[2]  
POWERS EN, 1974, THESIS U PENNSYLVANI
[3]  
Steinberg B.D., 1976, PRINCIPLES APERTURE
[4]   PROPERTIES OF PHASE SYNCHRONIZING SOURCES FOR A RADIO CAMERA [J].
STEINBERG, BD .
IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION, 1982, 30 (06) :1086-1092
[5]  
STEINBERG BD, 1973, J FRANKLIN I DEC
[6]  
STEINBERG BD, 1981, IEEE T ANTENN PROPAG, P740
[7]  
TAHERI S, 1976, IEEE T ANTENNAS PROP, V24
[8]  
YADINJADLOVKER E, 1978, THESIS TEL AVIV U