| 摘要 |
The invention relates to a detection device, comprising a parabolic mirror ( 1 ) and several radiation detectors ( 2 - 5 ). The detectors are placed in the focal plane (O, X'-X, Y'-Y) of the mirror with respective spacings in a common fixed direction (Y'-Y). The detection device further comprises a selector system, connected to each of the detectors ( 2 - 5 ), embodied to successively select each of the detectors and to transmit a received signal from the selected detector. The separations of the detectors (d 2 -d 5 ) are selected such that a gain diagram, for the reception of said device, has a gain minimum, between two successive gain maxima, each corresponding respectively to one of the detectors, of less than 3.0 dB less than said gain maxima. Such a device permits a sweeping of a zone with several adjacent sub-sweeps from a machine overflying said zone.
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