Direct Digital Synthesizer (DDS) has the advantages of high frequency resolution, rapid frequency change rate and low phase noise.
直接数字频率合成器dds具有极高的分辨率、频率转换速度快、相位噪声低等优点。
Doppler centric frequency is influenced much greater than Doppler FM rate and azimuth resolution is.
对多普勒中心频率影响大，对多普勒调频斜率及方位分辨率影响小。
Spectrum equilibrium filter can compensate high frequency absolutely and has high compensation rate, it can improve the resolution of seismic prospecting to a great extent.
频谱均衡滤波器对高频进行绝对补偿，且具有较高的高频提升速率，可以明显提高地震勘探的分辨率。
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