A novel compact parallel optical correlator

We present a compact parallel optical correlator (CPOC) based on joint transform correlation manipulation that can be used for various applications. Two innovative approaches are adopted to make the whole system more compact with a volume of 17×5×3cm3. Two demo systems, i.e., guidance of guided missile and on-orbit rendezvous and docking have been established. The experimental result showed that CPOC system currently operates at approximately 300 Hz and can accurately determine the positioning information when a 1024×768 pixel spatial light modulator (SLM) is employed.

[1]  J Shamir,et al.  Iterative generation of complex reference functions in a joint-transform correlator. , 1991, Optics letters.

[2]  James P. Karins,et al.  Second-generation miniature ruggedized optical correlator (MROC) module , 1997, Defense, Security, and Sensing.

[3]  Hanying Zhou,et al.  Portable 512x512 grayscale optical correlator , 2004, SPIE Defense + Commercial Sensing.

[4]  Tien-Hsin Chao,et al.  Compact 512 x 512 grayscale optical correlator , 2002, SPIE Defense + Commercial Sensing.

[5]  Mohammad A. Karim,et al.  Improved correlation discrimination using joint fourier‐transform optical correlator , 1991 .

[6]  A. B. Vander Lugt,et al.  Signal detection by complex spatial filtering , 1964, IEEE Trans. Inf. Theory.

[7]  Tien-Hsin Chao,et al.  Real-time automatic target recognition using a compact 512 x 512 grayscale optical correlator , 2003, SPIE Defense + Commercial Sensing.

[8]  Y Zhang,et al.  Complementary-reference joint transform correlator. , 1994, Applied optics.

[9]  F T Yu,et al.  Performance of a phase-transformed input joint transform correlator. , 1996, Applied optics.

[10]  Stuart A. Mills,et al.  Third-generation Miniature Ruggedized Optical Correlator (MROC) module , 1998, Defense + Commercial Sensing.

[11]  Tien-Hsin Chao,et al.  Automatic target recognition field demonstration using a grayscale optical correlator , 1999, Defense, Security, and Sensing.

[12]  Francis T. S. Yu,et al.  A real-time programmable joint transform correlator , 1984 .

[13]  F T Yu,et al.  Implementation of a non-zero-order joint-transform correlator by use of phase-shifting techniques. , 1997, Applied optics.

[14]  Tien-Hsin Chao,et al.  512x512 high-speed grayscale optical correlator , 2000, SPIE Defense + Commercial Sensing.

[15]  Chung Jung Kuo Joint-transform correlator improved by means of the frequency-selective technique , 1994 .

[16]  Tien-Hsin Chao,et al.  Grayscale optical correlator for real-time onboard ATR , 2001, SPIE Defense + Commercial Sensing.

[17]  Tien-Hsin Chao,et al.  Simulation of miniature optical correlator for future generation of spacecraft precision landing , 2003, SPIE Defense + Commercial Sensing.