Optimal step frequency signal for a ground penetrating radar

It is shown that the performance of a ground penetrating radar with an ultra-wideband step frequency signal can be improved by transmitting a different energy for each carrier frequency. As a result the radar can use lower mean transmitting energy while retaining the same main parameters such as penetration depth and range resolution. The total gain in transmitted energy depends on the penetration depth and ground properties and can reach 10-30 dB for practical radars