This short memo presents the results of simulation tests that empirically quantify quantizer sensitivity losses in the WIDAR correlator for the EVLA. These results demonstrate that 3-bit/8-level quantization suffers a ~3.7% sensitivity loss and that 4-bit/15-level quantization suffers ~1.3% sensitivity loss. The results will also show that a WIDAR correlator with 3-bit initial quantization and ...

Analog correlation is an important analog signal processing function. A new analog correlator circuit for implementing Spread Spectrum Time Domain Reflectometry (SSTDR) technique is proposed. SSTDR technique, makes locating intermittent faults possible, by continuously testing live wiring networks. The proposed correlator circuit is more linear by almost an order of magnitude and consumes half ...

A novel method is described for compensation of size variations in the input pattern of an optical correlator for pattern recognition by appropriate adjustment of the reconstruction wavelength. Simple ring-shaped patterns of variable diameter have been optically cross-correlated. Using a tunable dye laser of narrow bandwidth, the correlator output was analyzed for various combinations of size a...

The paper is focused on practical application of Cambridge Correlator. The goal is to propose a traffic signs inventory system by using excellent characteristics of correlator in the rapid optical correlation. The proposal of this inventory system includes obtaining of traffic signs to create the database either collecting the GPS coordinates. It is necessary to know the traffic signs position ...

The correlator of singlet axial-vector and vector currents in the external electromagnetic field is studied within the instanton liquid model of QCD vacuum. In the chiral limit we calculate the longitudinal w (0) L and transversal w (0) T with respect to axial-vector index invariant amplitudes at arbitrary momentum transfer q. It is demonstrated how the anomalous longitudinal part of the correl...