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金属补偿器实时对滤波系数自动进行调整，当补偿器调整达到平衡时，其输出信号大约等于失真前的原始发送信号。
The self adaptive filter automatically adjusts the filter factors . When the adjustment achieves equilibrium , the output signals are almost equal to the raw ones.
火事探测器与金属探测器一样，通过发送信号到护林军的卫星电话上，使得护林军能够对偷猎者们进行突袭。
Like the metal detectors, the fire detectors will alert the rangers by satellite phone, allowing them to swoop as from nowhere.
使用完全正交的伪随机码代替单脉冲信号对超声信号进行调制，以提高发送信号的抗干扰能力和系统的测距精度；
The pseudorandom code instead of single impulse is used for modulation to improve the capability of anti-jamming and precision of measuring range.
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