Abstract:In this paper a novel system of combined X-band radiometer-scatterometer is reported.This system is especially designed for correlated observation of active and passiveremote sensing. By employing this system,multi-polarized (vv, hh, vh, hv) backscattering coefficients and v, h-polarized brightness temperature can be measured simultaneously.An example of scattering and emission from land surface and metal targets is presented.