| 摘要 |
8. In an echo energy operative object locator system, means generating pulses of oscillatory energy of finite duration, directive energy emission means for emitting the generated energy in a narrow beam, means for rotating said directive energy emission means at a rate providing several revolutions thereof during each pulse to thereby subdivide each pulse into a group of short duration pulses with the individual pulses of said group separated by periods greater than the pulse duration of said individual pulses, directive reception means for intercepting echo energy pulses returned by an object, means for storing the intercepted short duration echo energy pulses occurring over a period of time, control means for regulating the reproduction of stored echo energy pulses wherein the time separation between the individual reproduced pulses is reduced to less than the duration of the individual reproduced pulses, and narrow bandwidth frequency selective means responsive to the reproduced pulses for combining reproduced pulse energy occurring over a period of time.
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