In order to analyze the performance of linear phase retrieval (LPR) sensor, an experimental setup based on the LPR method has been built. The measurement and wavefront retrieval of LPR sensor and Hartman wavefront sensor were compared on the same stochastic wavefront aberration. The influence of different detection resolution and Zernike retrieval order on retrieval results has been compared and analyzed. After analyzing the target resolution, it is considered that reasonable target size will benifit retrieval precision. At the same time, the LPR sensor can realize similiar precision measurement with less detection cells. With a target resolution of 8 pixel×8 pixel in experiment the error coefficient is small. The retrieval results of different orders, show the error ratio is less than 0.25 and it is comparatively accurate to retrieve pre-35 order aberrations.