Direction finding error analysis of over-water troposcatter propagation signals

Troposcatter propagation is one of major way that ultrashort wave and microwave propagate over horizon. It often forms irregular or stable air layer above sea, so wave propagate by means of incoherent reflecting of the irregular layer or coherent reflecting of the stable layer. The accuracy direction finding of over-water troposcatter propagation signals make sense of situation awareness of targets beyond the horizon. The troposcatter propagation model is built up. The effect of troposcatter propagation mechanism acts on direction finding error is analyzed. This paper has guiding value for amendment of direction finding error.