Analysis of frequency sharing between mobile systems and radiolocation radars in VHF band

As the number of space objects including artificial debris is increased, needs for development of new applications in radiolocation service (radars) are also growing to be used for aerospace surveillance and tracking the launch and movement of spacecrafts. Radiowaves in the VHF (3-30 MHz) band propagate well through the ionosphere, thus various space object detection applications including remote space sensing and asteroid detection as well as defining the position of natural and artificial Earth satellites are enable from terrestrial-based radiolocation radars in this frequency band. Considering the effective and economical aspects, VHF bands are appropriate for implementation of these new radiolocation radars. Current requirements for radiolocation radars used for space-object detection from terrestrial locations are based on 2 MHz bandwidth in portion of the VHF band, however allocation with a wider frequency range may provide flexibility and facilitate sharing with existing services. Taking into account the proposal by Russian Federation including the above requirements, WRC-07 (World Radio-communication Conference 2007) adopted a nex