摘要
结合低截获概率雷达中常用的对称三角线性调频连续波信号的特点,提出了基于RadonAmbiguity变换(RAT)和分数阶傅立叶变换(FRFT:FractionalFourierTransform)的对称三角线性调频连续波信号的检测与参数估计新算法。该方法不仅给出了对称三角线性调频连续波信号的调频率和初始频率的参数估计,并且推导出了调制带宽估计的表达式。通过仿真验证了该方法的有效性并具有很好的估计性能。
Combined with the characteristic of symmetrical triangular linear frequency modulation continuous wave (STLFMCW) signal used widely in low probability of intercept radar, a novel algorithm based on Radon-ambiguity transform (RAT) and Fractional Fourier transform (FRFT) is presented for the detection and parameter estimation of STLFMCW signal. Besides chirp rate and initial frequency, an expression for bandwidth estimation is also obtained. Finally the simulation resuits indicate that the method can provide good estimation performance.
出处
《电波科学学报》
EI
CSCD
北大核心
2005年第5期594-597,共4页
Chinese Journal of Radio Science
基金
重点实验室基金资助项目(No.5143150103ZS0106)