The gravitational lensing of gravitational waves might cause beat patterns detectable by interferometers. The feature of this kind of signal is the existence of the beat pattern in the early inspiral phase, followed by seemly randomly changing profile. After the strain peaks for the first time, the signal takes the usual waveform and the strains peaks for the second time. Once this signal is detected, the actual magnification factors can be obtained, so the true luminosity distance of the binary system is known. We can also infer the mass of the lens and the cosmological parameters with unprecedented precision due to the high accuracy in the measurement of the waveform.

中文翻译：

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通过引力透镜的引力波干涉：光度距离、透镜质量和宇宙学参数的测量

引力波的引力透镜效应可能会导致干涉仪检测到的拍频模式。这种信号的特点是在早期的吸气相中存在节拍模式，随后是看似随机变化的轮廓。在应变第一次达到峰值后，信号采用通常的波形，应变第二次达到峰值。一旦检测到这个信号，就可以得到实际的放大倍数，因此双星系统的真实光度距离是已知的。由于波形测量的高精度，我们还可以以前所未有的精度推断出透镜的质量和宇宙学参数。