of a plurality of receiving antennas 26 which receive reflected signal 22 receiving antennas 26 are disposed along wings 28 of an aircraft 30 the real aperture a r of antenna array 24 is defined by the diameter of the individual receiving antennas 26 a horizontal aperture for the radar system 10 is defined by the width d of the antenna array 24 the height of the aircraft 30 is indicated as h to enhance the horizontal aperture of the radar system some of the receiving antenna 26 are located on extendible booms 32 located at the opposite ends of wings 28 as will be obvious to one of ordinary skill in the art the lengths of the booms 32 may be extended or varied in order to produce larger or variable horizontal apertures as necessary to further aid in an understanding of the implementation of radar system 10 fig2 provides a block diagram which schematically depicts the operation of radar system 10 as described above during the operation thereof radar transmitter 12 generates and directs radar signal 14 toward the surface 16 of ground area 18 the radar signal 14 is reflected off of the surface of a buried object.