Automated far field antenna pattern test facility

Details Automated far field antenna pattern test facility Automated far field antenna pattern test facility

1994-02-28

1995-03-07

Blum, Theodore M.

Communications: directive radio wave systems and devices (e.g.,

Directive

Including antenna pattern plotting

342173, H01Q 300

Patent

active

053962559

ABSTRACT:
An antenna test and measurement system (100) performs measurements of the transmitted or received signal strength of a vehicle mounted transmit or receive antenna (102) with respect to all aspects of the system with respect to the vehicle mounted antenna, and vehicle state parameters (131, 139), i.e., position and attitude, are simultaneously recorded (185, 186). The antenna measurements are correlated with the state parameter measurements such that variations in the measured signal strength caused by changes in vehicle state are apparent. A graphical display (189, 190) of antenna signal strength and vehicle state parameters are presented for the entire 360.degree. azimuth of an antenna test so that variations in the signal strength caused by changes in vehicle state parameters may be identified. The graphical display of antenna signal strength may be modified based on variations in vehicle state parameters such that the graphical display indicates the antenna signal strength had the variations in vehicle state not occurred. Antenna signal strength data and vehicle state information is telemetered (122, 171, 175, 178, 181) from the vehicle carrying the antenna to the antenna test and measurement system. A graphical display of antenna signal strength versus antenna altitude (FIGS. 5 and 7) is provided for determining the optimum altitude for antenna pattern measurements, and calculation of antenna isotropic (FIG. 10) is provided for verification of antenna performance.

REFERENCES:
patent: 4673939 (1987-06-01), Forrest
patent: 4754496 (1988-06-01), Fishkin et al.
patent: 4884078 (1989-11-01), Fishkin et al.
patent: 5039991 (1991-08-01), Boese et al.
patent: 5163176 (1992-11-01), Flumerfelt et al.

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