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在密集的电子环境中,侦察接收机的输出是一串交迭脉冲序列。用计算机对这些信号进行实时处理,必须要将这串交迭脉冲序列中的每个脉冲的到达时间,迅速地变成二进制数保存在计算机内存中。 本文叙述了用Z-80微机产生采样门波的方法。在采样期间,一个16位计数器将每个视频脉冲的到达时间变换为双字节的二进制数存入扩充的RAM中。同时,一个10位的计数器统计输入脉冲的个数。由于输入视频脉冲出现的时间是随机的,宽度也是各不相同的。为保证可靠地实现转换,视频输入先经过“选1”电路处理。 采样完毕后,微机对扩充RAM进行切换,CPU取出采样期间保存在扩充RAM中的数据进行分选处理。处理完毕再自动转入采样,这样就保证了固定的采样时间和灵活的分选时间相结合的连续工作。
In dense electronic environments, the output of the scout receiver is a series of overlapping pulse sequences. Real-time processing of these signals by a computer requires that the arrival time of each pulse in the series of overlapping pulses be rapidly changed to a binary number and stored in the computer’s memory. This article describes the Z-80 computer generated sampling gate wave method. During sampling, a 16-bit counter translates the arrival time of each video burst into a double-byte binary number into the extended RAM. At the same time, a 10-bit counter counts the number of input pulses. Since the input video pulse occurs at random times, the widths are also different. To ensure reliable conversion, the video input is processed first by the “select 1” circuit. After the sampling is completed, the microcomputer switches the expansion RAM, and the CPU takes out the data stored in the expansion RAM during the sampling to sort the data. Processed and then automatically transferred to the sampling, thus ensuring a fixed sampling time and flexible sorting time combination of continuous work.