PURPOSE: To perform the searching and tracking of a target within a wide range, by mounting a transmission means having a transmitter for transmitting a high frequency radio wave and a transmission antenna to a statellite or flight body.
CONSTITUTION: A part of the high frequency radio wave transmitted from the transmitter 1a of the transmission means 1 mounted on the satellite or flight body in the sky through a transmission antenna 1b is reflected by a target 4 to be sent to the receiving means 2, 3 on the ground. The receiving means 2, 3 have receiving antennae 2a, 3a receivers 2b, 3b and azimuth angle/elevation calculators 2c, 3c to calculate the azimuth angle/elevation of the target. The data calculated by the azimuth angle/elevation calculators 2c, 3c are sent to a position calculator 7a and the position of the target 4 is calculated on the basis of the distance between the receiving means 2, 3 and displayed on a position display device 7b.
FUJISAKA TAKAHIKO
OHASHI YOSHIMASA
| US3171126A | 1965-02-23 |
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