【摘要】 提出了一种用线性调频 Z变换进行频谱校正的新方法 ,通过提高局部频段内的频率分辨率解决离散谱线不能对准实际谱峰时所带来的误差。介绍了线性调频 Z变换的原理以及将该变换应用于频谱校正的具体方法和步骤 ,并通过仿真计算对该频谱校正方法有效性进行验证。模拟计算表明该方法具有校正精度高、速度快和灵活性强的特点。更多还原

【Abstract】 A new spectrum correction method based on Chirp Z Transform is presented, by which the frequency resolution can be increased according to users’ requirements and thus a richer spectrum can be obtained and more accurate spectrum peaks can be found. This method limits the errors when the discrete frequency lines can’t catch the real spectrum peaks. The basic principle of Chirp Z Transform and its application in spectrum correction are introduced in the paper and simulations are also carried out in order to verify its validity. Simulation results show that the new spectrum correction method owns the advantages of high accuracy, high speed and high flexibility.更多还原