论文标题
基于稀疏性的银河系重力波的恢复
Sparsity Based Recovery of Galactic Binaries Gravitational Waves
论文作者
论文摘要
将银河二进制的检测作为引力波来源有望提供有关这些系统的前所未有的丰富信息，但在信号处理方面也带来了一些挑战。特别是，大量的预期来源和错误识别的风险要求开发强大的方法。我们在这里描述了银河系二进制烙印的原始非参数重建在受仪器噪声影响的测量中，典型的是基于空间的引力波动台LISA。我们根据稀疏信号建模和专注于自适应结构块稀疏性的各种方法的影响。我们仔细地表明，稀疏表示可以可靠地访问干涉测量的物理内容。特别是，我们在一个简单而逼真的示例上，成功地检查了重力波信号的成功快速提取，该例子涉及最近在LISA数据挑战中提出的验证银河系二进制文件。
The detection of galactic binaries as sources of gravitational waves promises an unprecedented wealth of information about these systems, but also raises several challenges in signal processing. In particular the large number of expected sources and the risk of misidentification call for the development of robust methods. We describe here an original non-parametric reconstruction of the imprint of galactic binaries in measurements affected by instrumental noise typical of the space-based gravitational wave observatory LISA. We assess the impact of various approaches based on sparse signal modelling and focus on adaptive structured block sparsity. We carefully show that a sparse representation gives a reliable access to the physical content of the interferometric measurement. In particular we check the successful fast extraction of the gravitational wave signal on a simple yet realistic example involving verification galactic binaries recently proposed in LISA data challenges.
