论文全面分析了有限冲击响应滤波器字长截断和阶数截断误差对接收机性能的影响，为数字接收机中的滤波器字长和阶数选择提供了理论依据。
Effects of digital filter quantization errors on performance of receiver have been analyzed thoroughly, which provide the criterion to determine the word length and order of FIR.
为提高数字谱仪的能量分辨率，利用约束最优化方法提出了一个在任意平稳噪声背景下直接设计最佳数字有限冲击响应（FIR）滤波器的方法。
The energy resolution of digital spectroscopy can be improved by finite impulse response (FIR) filters optimized for the presence of any kind of stationary noise.
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