发明名称 Surveillance apparatus.
摘要 <p>An infra-red long range target discriminator (10) comprises a rotatable optical chopper (18) having alternate opaque and transmissive elements of equal size, and generally of the same size as the point spread function of a distant target which is a virtual point source. The discriminator (10) comprises a plurality of photodetectors (28) each of which corresponds in size to a neighbouring pair of the transmissive and opaque elements.</p>
申请公布号 EP0316489(A1) 申请公布日期 1989.05.24
申请号 EP19870310124 申请日期 1987.11.17
申请人 BRITISH AEROSPACE PUBLIC LIMITED COMPANY 发明人 BURGESS, OSWALD BRITISH AEROSPACE PLC.
分类号 G01S3/781;G01S3/784;G01S3/789 主分类号 G01S3/781
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