A Modified Fast Approximated Power Iteration Subspace Tracking Method for Space-Time Adaptive Processing

Figure 2

The estimation error 𝑓_𝐔(𝐿) versus sample number with 𝑀=11 and 𝑃=4.

(a) equal SNR {20 dB 20 dB 20 dB 20 dB}

(b) nonequal  SNR {30 dB 20 dB 10 dB 20 dB}