A technique of using optical wavefront-division multiplexer to realize highefficiency joint transform correlation is proposed in this paper. The input plane of thesystem is divided into many equal perts by computer, and in every part the reference andthe input images displayed side by side. An optical wavefront-division multiplexerused in this system makes the optical information read out from different ports to form apower spectral array at the focal plane of the first Fourier transform lens. As a result, enhanced optical correlation signal is obtained at the output plane. The proposed real-time high-efficiency joint transform correlator (JTC) can use the physical area of the liquid crystal light valves (LCLVs) as well as the readout lightmore efficiently. The principle of the system has been analyzed. The design of the optical wavefront-division multiplexer and the experimental results of the system are given.