本文首先讨论用双站FM—CW雷达探测水平分层地层的可能性,提出了探测方案,给出了计算层介电常数和层厚度的公式,然后介绍已研制出的一部L波段的双站FM-CW雷达实验系统,以及在户外场地上对人工模拟的分层介质模型所作的实验。初步的实验结果表明,双站FM-CW雷达具有测定分层介质的能力,其纵向分辨力为45厘米(当ε=1时)。 This paper first discusses the possibility of using double-station FM-CW radar to detect horizontal stratified strata, puts forward a probing scheme, gives the formula of calculating dielectric constant and layer thickness, and then introduces an L-band double Station FM-CW radar experimental system, as well as experiments on artificial simulated layered media models in outdoor venues. Preliminary experimental results show that the bistatic FM-CW radar has the ability to measure layered media with a vertical resolution of 45 cm (when ε = 1).