pplication GROT-10 in St.Petersburg.

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Station of water channel.

Georadar profile with the passage from the building to the concrete fence. Inclined lines (5 bold) in the right side of the frame are reflections from the walls of buildings. More gently sloping (3 lines) on the left side are reflections from the fence. There is a number of the objects, for confident identification of which additional data are required. For eliminating reflections from the air objects screened antenna is used.
On the spot with the sign of a question the ancient wooden sewerage duct is found at the dissection.

Collector.

Profile is taken in full-wave mode (colored frame), with coding of the amplitude of the signal reflected by color in the logarithmic gradation. Reasonable user question arises, why dark-blue spot higher at depth 1m (see colored frame) as collector image is not selected. On the frame with threshold +32 (it is possible to select any threshold in the program) it is evident that the first spot disappeared. Therefore, reflected singnal is weak and, most probably, it was caused by the heterogeneities of the collector trench. Other objects are visible on the image. Additional data are required for their identification.