M sequence signal can be chosen as the receiving deterministic pulsesignal when using acoustic vector to determine the direction of the sound source. It possesses favorable anti-multipath capability.
The paper aimed at the adoption of the IGBT SPWM (Sinusoidal Pulse Width Modulation) signalsource and IGBT test system research for the production of IGBT manufacturer to provide testing methods.
The two signal sources are jointly controlled to produce a three-item square-wave pulse synchronous frequency conversion and voltage regulation signalsource.