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我们获得障碍物的距离信息和超声回波的强度信息，进行音频调制，向盲人提供更加丰富的信息。
The system acquired the distance information of obstacles as well as the power of reflected ultrasonic, and informs the blind with modulated audio signal.
飞机旋转部件的周期运动会对雷达信号的回波产生一个周期性的调制。
The periodical motion of aircraft rotating structures will cause a periodically modulated radar return signal.
正弦调制相位信号是微动目标雷达回波微多普勒信号的一般形式。
Signals with sinusoid modulated phase is the general form of micro-Doppler signals in radar echoes from targets with micro-motions.
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