A two-dimensional wavepropagation code, developed specifically to simulate correlationreflectometry in large-scale fusion plasmas, is described. The codemakes use of separate computational methods in the vacuum, underdenseand reflection regions of the plasma in order to obtain the highcomputational efficiency necessary for correlation analysis.Simulations of TFTR plasma with internal transport barriers arepresented and compared with one-dimensional full-wave simulations. Itis shown that the two-dimensional simulations are remarkably similarto the results of the one-dimensional full-wave analysis for a widerange of turbulent correlation lengths. Implications for theinterpretation of correlation reflectometer measurements in fusionplasma are discussed.