Using first-principles calculations based on density functional theory combined with the non-equilibrium Green's function approach, the transport behaviors of a single-molecule junction formed by benzenedithiol connected to gold electrodes are investigated. The breakdown voltage for the model of benzenedithiol plus gold electrodes is 0.7 V, which is close to the experimental value. A linear response between the conductance and temperature (known as linear temperature drift) is found in the molecular device, which indicates that it could be used to maintain the stability of molecular circuits. Meanwhile, input and output with the same accuracies would be useful for designing multi-level circuits, which would be used to improve the resolution ratio in analog-to-digital converters. The present findings indicate that benzenedithiol-based single-molecule junctions would be promising functional units for molecular sensors.

Considering the impact of the common measurements for updating the track to improve PDA algorithm, an improved combined interacting multiple models probability data association(IC-IMMPDA) algorithm, combining IMM algorithm with improved PDA algorithm is proposed. The simulation's results show that the new algorithm is not only much better than the combined interacting multiple models probabilistic data association (C-IMMPDA) algorithm, but also keeping small calculation cost in the environment of dense targets.