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1. 发明申请

WO1980001612A1 SYMBOLOGY WRITING APPARATUS FOR RADAR PLAN POSITION INDICATOR DISPLAYS 审中-公开
标题翻译：雷达计划位置显示器的符号写字装置
公开(公告)号：WO1980001612A1
公开(公告)日：1980-08-07
申请号：PCT/US1979001147
申请日：1979-12-28
申请人： SPERRY CORP
发明人： SPERRY CORP , MAINE R , GRYMES J , BEAN D
IPC分类号： G01S07/22
CPC分类号： G01S7/22
摘要： Symbology is written on a radar plan position indicator display (202) with a rotating beam deflection field generated, for example, by a rotating yoke (201). The symbology is written in radar real time as the system generates the radially oriented range sweeps (10). The displayed radar range is quantized into a predetermined number of range increments and digital data representative of the symbology to be written are inserted into a shift register (33) which is clocked in synchronism with the range sweeps to provide interleaved digital data to the video input of the display thereby writing the desired symbology in real time as the range sweeps provide the normal radar display. The normal radar video data is combined (39) with the symbology data so that the symbology and normal radar returns are simultaneously written in real time. A portion of the symbology generating apparatus (Fig. 2) provides a manual acquisition marker comprising a range ring (12) and an azimuth geometric figure (13). The symbology writing apparatus also includes a portion (Fig. 4) for providing alpha-numeric or other localized symbology (Fig. 3).

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