Search

In this paper, an improved sun-tracking system using the FPGA chip as controlling platform is proposed. The system computes the sun trails precisely through tracking algorithm, chooses different tracking frequencies in accordance with illumination intensity, and the tracking precision is guaranteed by the angle-sensor which can detect mechanical deviation. The simulating test shows that this system is of high precision and strong reliability, which can improve the efficiency of photovoltaic system greatly. All the source codes of sun-tracking system are realized by HDL Verilog and expected improved results are confirmed by the field test.

In this paper, an acoustic imaging algorithm based on acoustic array Multiple-Input Multiple-Output (MIMO) and Multiple Signal Classification (MUSIC) by location algorithm fusion is proposed to realize Three Dimension (3D) location estimation and display for future mobile system. By combined with MIMO beam estimation and MUSIC estimation algorithm, the location fusion algorithm with 3D display advantage can be achieved, because the MIMO data pretreating and data fusion are used to increase location imaging precision and resolution, so that a robust and anti-interference location display algorithm can be obtained. We carried out Modeling and Simulation for MIMO beam location algorithm, MUSIC estimation algorithm and location fusion algorithm, and made a compare and analysis on simulation results. Simulation results show that the location fusion algorithm is provided with reliable feasibility, improved precision and resolution for 3D imaging display.