There are more than one hundred thousand space debris with the diameter beyond one centimeter, the exist of space debris has been seriously threatening the safety of the on-the-track space probes. Small space debris, diameter between one and ten centimeter, is focused as the main target in this paper, on the base of the single range matching filtering algorithm (SRMF), a scanning angle orientation algorithm is proposed, in virtue of which the relative tangent speed can be calculated and the matching function of every dispersion point on the space debris with different spinning radius will be amended, as a result, the matching function will be accurately matched with the Doppler modulation caused by spinning speed. The simulation result verifies the validity of this algorithm.