Conversion efficiency and pulse wave-forms will be affected by many factors due to the wide spectrum range and high intensity density of ultra-short pulses.

由于超短脉冲具有较宽的光谱范围及较高功率密度，倍频转换效率和谐波脉冲波形将受到许多因素的影响。

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On conditions of the current technology, the thesis puts forward a new high dynamic and whole digital spread spectrum receiver which is based on the high density programmable logic devices.

根据现有的软硬件技术条件，结合实际需要，本论文提出并详细分析了一种新的基于高密度可编程逻辑器件的高动态全数字解扩接收机系统。

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