摘要
为了利用实测的RCS数据对回波脉冲进行幅度调制产生逼真的雷达目标回波,采用正交多项式拟合及三角多项式拟合法将提取RCS数据拟合成为一个多项式函数或包含正余弦的三角函数,运用CORDIC算法使这些数据集成于DSP等芯片用于回波幅度调制,最后应用Matlab软件对2种拟合方法从数值和直方图进行仿真比较.仿真结果表明:三角多项式拟合方法能高精度地拟合RCS数据,对RCS数据的硬件实现及雷达目标回波模拟有一定的参考价值.
In order to simulate the radar target echoes more approaching to the reality by implementing the amplitude modulation of echo pulses with the field-measured RCS data,this paper is to extract the RCS data,fit them into a polynomial function or the sine or cosine trigonometric functions using the methods of orthogonal polynomial fitting and trigonometric polynomial fitting,and integrate them into the DSP and other chips using the CORDIC algorithm,used for echo amplitude modulation.Finally,simulation is performed by Matlab,for the comparison of those two fitting methods in terms of their values and histograms.It is shown that the trigonometric polynomial fitting method can fit the RCS data more accurately,which can be a certain reference for the hardware implementation of RCS data and simulation of radar target echoes.
出处
《空军雷达学院学报》
2012年第1期17-20,共4页
Journal of Air Force Radar Academy
