Recent developments in photoacoustics have witnessed the implementation of a radar matched-filtering methodology into the continuous wave photoacoustic modality. The main merit of using matched filtering in continuous photoacoustics is the improvement in signal to noise ratio (SNR), but the correlation process may result in a loss of resolution. It is possible to enhance both SNR and resolution by matched-filtering and pulse compression with a frequency chirp. However, the theory behind the effect of the chirp parameters on both SNR and resolution is still not clear. In this paper, the one-dimensional theory of the photoacoustic radar with a pulse compressed linear frequency modulated sinusoidal laser chirp is developed. The effect of the chirp parameters on the corresponding photoacoustic signal is investigated, and guidelines for choosing the chirp parameters for resolution and SNR optimization are given based on theory and simulations. The results show that by judiciously manipulating the center frequency, bandwidth, and duration, the resolution and SNR can be easily enhanced.

光声技术的最新发展见证了将雷达匹配滤波方法应用于连续波光声模态。在连续光声中使用匹配滤波的主要优点是改善了信噪比（SNR），但是相关过程可能会导致分辨率降低。通过使用频率线性调频进行匹配滤波和脉冲压缩，可以提高SNR和分辨率。但是，线性调频脉冲参数对SNR和分辨率的影响背后的理论仍然不清楚。本文提出了一种具有脉冲压缩线性调频正弦波激光rp的光声雷达的一维理论。研究了线性调频脉冲参数对相应光声信号的影响，并基于理论和仿真给出了线性调频脉冲参数的选择，以用于分辨率和SNR优化的指南。结果表明，通过适当地操纵中心频率，带宽和持续时间，可以轻松提高分辨率和SNR。