With increased degrees of freedom of the transmitter, coherent waveform-agile radar system can change its transmission on-the-fly in response to target detection’s requirement. This approach can provide better performance than a single waveform. In this paper, we consider unimodular sequence set design (USSD) problem based on summed range-Doppler ambiguity function (SRDAF) for coherent waveform-agile radar system. We present two algorithms for constructing unimodular sequence sets under the constant module constraint with desired minimized sidelobes on a predefined area of range-Doppler plane. The proposed algorithms are constructed based on singular value decomposition (SVD) and cyclic algorithm (CA), respectively. Numerical examples show the effectiveness of the proposed algorithms.

随着发射器自由度的提高，相干波形捷变雷达系统可以响应目标检测的需求而即时更改其发射。这种方法可以提供比单个波形更好的性能。在本文中，我们考虑了相干波形捷变雷达系统基于总距离多普勒模糊度函数（SRDAF）的单模块序列集设计（USSD）问题。我们提出了两种算法，用于在恒定模块约束下，在距离多普勒平面的预定义区域上具有所需的最小旁瓣的情况下构造单模序列集。分别基于奇异值分解（SVD）和循环算法（CA）构造了所提出的算法。数值算例表明了所提算法的有效性。