Efficiency of attenuation of moving clutter

The Doppler-frequency shift resulting from clutter motion degrades the efficiency of moving target indication (m.t.i.) radar systems. Although the degradation is much less when some compensation methods are used, it still exists because of the finite tolerances of the Doppler-compensation frequency shift. This effect is analysed for single- and double-delay-line m.t.i. cancellers and fluctuating clutter.