High Resolution Land Clutter Characteristics.
ADMIRALTY SURFACE WEAPONS ESTABLISHMENT PORTSMOUTH (ENGLAND)
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An investigation was made into land clutter characteristics using a monostatic radar with the high range resolution associated with an effective pulse width of approximately 15 nanoseconds. The radar used in the investigation operated at 5750 MHz and the range resolution of 15 nanoseconds was achieved by using a 100 MHz bandwidth signal processing system which included 200 to 1 pulse compression. The data acquisition was carried out by short duration peak amplitude sampling of the clutter returns from fixed bearings at consecutive 6.25 nanoseconds steps in range, over several microseconds of radar range, using an on-line digital computer. The mean clutter amplitude from several seconds of sampling at each range step was calculated and stored on paper tape for subsequent analysis. The results of analysis giving the spatial distribution of the scattering centers which comprise land clutter in areas of fairly heavy clutter are discussed. These reveal that in general with this high range resolution the larger scattering centers, in the mainly rural terrain surrounding the radar site, are well resolved, and even scattering centers with equivalent reflecting areas of less than 0.1 square metres tend to be resolved. Author
- Active and Passive Radar Detection and Equipment