A Ground-Based Interferometric Synthetic Aperture Radar Design OUTDOOR FIELD MEASUREMENT A series of outdoor filed measurements has been conducted to verify the performance of the developed GBSAR. This section discusses five major outdoor tests that have been conducted. DEFORMATIONDETECTIONTEST Figure 5. Functional block diagram of ground-based InSAR. the developed ground-based radar. This section will discuss the detail of the experiments conducted and the results obtained. INDOOR EXPERIMENT-PHASE STABILITY AND MODELING An indoor experiment has been conducted in a microwave anechoic chamber for continuous scanning of a single point target to perform the phase stability test and modeling of the developed GBSAR system. The detail of this experiment can be found in the published article [8]. The outcome of this work is the phase response of this GBSAR for isolated point scene can be modeled via a probability density function (PDF). Besides, the mechanical biasing errors have been identified and remove via postprocessing.