在开发周期的早期阶段获得完整的需求和精确的可视化模型，是项目取得成功的关键。
Obtaining complete requirements — and accurate visual models — in the early days of a project is critical for achieving success in later stages of the development lifecycle.
讨论了应用模型化测量方法，使用模型平移产生精确相移，使用波形重构技术精确合成周期信号的频率。
The modeling measurement method is discussed, the precise phase moving is produced by using model moving, and the precise frequency is made by using the waveform synthesizing technique.
通过使用一个周期的正弦波曲线模型的滑动拟合法，实现了正弦载波相位调制信号波形的精确解调。
By using moving one period sine wave model, the precise demodulation of PM signal wave is achieved.
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