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    • 13. 发明授权
    • Monotrack radar recording/playback system
    • 单轨雷达记录/播放系统
    • US4047170A
    • 1977-09-06
    • US630506
    • 1975-11-10
    • Robert E. Miller
    • Robert E. Miller
    • G01S7/04G01S7/28G01S9/02G01S7/30
    • G01S7/046G01S7/2806
    • A recording/reproducing system for radar and similar type data is provided wherein all data necessary to record and later reproduce an accurate data (radar) display is formatted on a single recording track; e.g., on magnetic tape, in the form of a single composite signal. In one embodiment, the composite signal contains radar video and trigger markers and is chopped by a multi-bit, bi-phase data signal containing word synchronization sequence, trigger identification, radar coordinate information, and any other pertinent data, as desired. In a second embodiment, the radar video and trigger markers frequency modulate one carrier signal, which is then combined with a second carrier which has been frequency modulated with data (i.e., word synchronization, trigger identification, coordinate information, etc.) to form the composite signal. The reproduce portion of the proposed system then decodes or demodulates the composite signal in order to recover the component signals and convert them back to the proper radar video, triggers and bearing format for display.
    • 提供了用于雷达和类似类型数据的记录/再现系统,其中记录和稍后再现精确数据(雷达)显示所需的所有数据在单个记录轨道上格式化; 例如在磁带上,以单个复合信号的形式。 在一个实施例中,复合信号包含雷达视频和触发标记,并且根据需要通过包含字同步序列,触发识别,雷达坐标信息和任何其他相关数据的多位双相数据信号进行斩波。 在第二实施例中,雷达视频和触发标记对一个载波信号进行频率调制,然后将其与已经用数据(即,字同步,触发识别,坐标信息等)进行频率调制的第二载波进行组合,形成 复合信号。 所提出的系统的再现部分然后对复合信号进行解码或解调,以便恢复分量信号并将它们转换回适当的雷达视频,触发和承载格式进行显示。
    • 19. 发明授权
    • Land mass blanking apparatus (U)
    • 土地质量下料装置(U)
    • US4809001A
    • 1989-02-28
    • US589659
    • 1975-06-20
    • Harry UrkowitzRichard P. Perry
    • Harry UrkowitzRichard P. Perry
    • G01S7/292G01S7/30
    • G01S7/2921
    • Conventionally, a shift register receives radar video return signals and es them into a signal processing and detecting means. Since continuous, large cross-section echoes such as those derived from land masses may saturate the processor, the present apparatus is set to blank such land masses. For this purpose, the shift register capacity is made coextensive with the continuous land mass echo and further, the register is provided with a series of taps spaced one from the other a distance representing selected increments of the range extent being tested. Each tap output is applied to an amplitude-thresholder to pass only higher strength echoes to a counter. Count-responsive means operating as a counter threshold control the radar signal processor to the extent that when the total count exceeds a certain number a processor "shut-off" signal is generated. When the count goes below the certain number a "turn-on" signal is generated. Thus, the processor is inactive when the count receives a predetermined total indicator of the large land mass to be blanked.
    • 通常,移位寄存器接收雷达视频返回信号并将其门控成信号处理和检测装置。 由于连续的大截面回波,如从陆地质量得到的那些回波,可能使处理器饱和,因此本设备将空白这样的土地块。 为此,移位寄存器容量与连续的陆地质量回波共同延伸,并且进一步地,寄存器设置有一系列抽头,一个彼此间隔开的距离,表示被测量范围的选定增量。 每个抽头输出被应用于幅度阈值器,以将仅较高强度回波传递到计数器。 计数响应装置作为计数器阈值操作,控制雷达信号处理器,使得当总计数超过一定数量时,产生处理器“关闭”信号。 当计数低于特定数量时,产生“开启”信号。 因此,当计数接收到要消隐的大地块的预定总指标时,处理器不活动。