摘要
给出了改进的ＦＦＴ方法和ＰＰＰ方法，以减少白噪声对谱参数估值的影响，从而可在弱信号、大谱宽条件下获得精度较高的谱参数的估值。试验表明，它比直接用ＦＦＴ方法和ＰＰＰ方法获得的结果好得多。
The advanced FFT and PPP method are presented to decrease effect of noise on spectrum parameters,thus some satisfactory spectrum parameters are obtained under the condition of weaker signal and bigger spectrum width The experiment shows:the result is better than value gained by primary FFT and PPP method,and some conclusions are given and discussed.
出处
《遥感技术与应用》
CSCD
1998年第4期43-49,共7页
Remote Sensing Technology and Application
基金
中国科学院"九五"重大项目
国家"九五"攀登计划项目
