Multipath is the dominant error source in differential GPS (DGPS). The traditional technique used to isolate pseudorange multipath is referred to as "code-minus-carrier." The result of the procedure is illustrated here. The high frequency components are typical of thermal noise but the low frequency behavior is characteristic of multipath. Note that the SatNav Toolbox supports this type of analysis since the pseudorange and integrated Doppler used here were generated by SatNav Toolbox functions.