The Shape of Target Function.

<p>The Shape of Target Function.</p

The Iteration Process After PCA Optimization.

<p>The Iteration Process After PCA Optimization.</p

The Contour of Target Function.

<p>The Contour of Target Function.</p

0.5m BRS Estimation Error Simulation Results.

<p>0.5m BRS Estimation Error Simulation Results.</p

1m BRS Estimation Error Simulation Results.

<p>1m BRS Estimation Error Simulation Results.</p

Simulation Parameters.

<p>Simulation Parameters.</p

Target area used in the simulation.

<p>Target area used in the simulation.</p

Simulation results without BRS estimation error.

<p>Simulation results without BRS estimation error.</p

Focused Images.

<p>(a) The focused image of first T/R pair; (b) The focused image of second T/R pair; (c) The focused image of third T/R pair.</p

Localization Error under different BRS Estimation Errors.

<p>Localization Error under different BRS Estimation Errors.</p