Radio pulsar signals are significantly perturbed by their propagation through the ionized interstellar medium. In addition to the frequency-dependent pulse times of arrival due to dispersion, pulse shapes are also distorted and shifted, having been scattered by the inhomogeneous interstellar plasma, affecting pulse arrival times. Understanding the degree to which scattering affects pulsar timing is important for gravitational-wave detection with pulsar timing arrays (PTAs), which depend on the reliability of pulsars as stable clocks with an uncertainty of ∼100 ns or less over ∼10 yr or more. Scattering can be described as a convolution of the intrinsic pulse shape with an impulse response function representing the effects of multipath propagation. In previous studies, the technique of cyclic spectroscopy has been applied to pulsar signals to deconvolve the effects of scattering from the original emitted signals, increasing the overall timing precision. We present an analysis of simulated data to test the quality of deconvolution using cyclic spectroscopy over a range of parameters characterizing interstellar scattering and pulsar signal-to-noise ratio (S/N). We show that cyclic spectroscopy is most effective for high S/N and/or highly scattered pulsars. We conclude that cyclic spectroscopy could play an important role in scattering correction to distant populations of highly scattered pulsars not currently included in PTAs. For future telescopes and for current instruments such as the Green Bank Telescope upgraded with the ultrawide bandwidth receiver, cyclic spectroscopy could potentially double the number of PTA-quality pulsars.

射电脉冲星信号在通过电离星际介质的传播过程中受到严重干扰。除了由于色散导致的与频率相关的脉冲到达时间之外，脉冲形状也会扭曲和偏移，被不均匀的星际等离子体散射，影响脉冲到达时间。了解散射对脉冲星计时的影响程度对于使用脉冲星计时阵列 (PTA) 进行引力波探测很重要，这取决于脉冲星作为稳定时钟的可靠性，其不确定性在 10 年或更长时间内约为 100 ns 或更小。散射可以描述为固有脉冲形状与代表多径传播效应的脉冲响应函数的卷积。在以往的研究中，循环光谱技术已应用于脉冲星信号，以消除原始发射信号的散射效应，从而提高整体计时精度。我们对模拟数据进行了分析，以在表征星际散射和脉冲星信噪比 (S/N) 的一系列参数上使用循环光谱测试反卷积的质量。我们表明循环光谱对高信噪比和/或高度散射的脉冲星最有效。我们得出的结论是，循环光谱可以在对远距离高散射脉冲星群的散射校正方面发挥重要作用，这些脉冲星目前尚未包含在 PTA 中。对于未来的望远镜和当前的仪器，例如升级了超宽带接收器的 Green Bank Telescope，