Abstract: A method of sparse array oriented approach for DOA estimation of grating lobe target filtering includes sub-array division processing of received echoes in multiple channels; digital beamforming is performed on each sub-array obtained after division to realize DOA estimation; the echo power of the beam pointing at each angle is calculated and the peak point is detected; peak threshold discrimination processing is performed based on the determined peak threshold; if the current sub-array satisfies the identified peak threshold, the corresponding power spectrum extreme is calculated to obtain the final DOA estimation. The present invention also relates to a corresponding device, processor and computer-readable storage medium thereof.

Abstract: A method for insulating an aluminum backboard of a photovoltaic module comprises the following steps: shearing the aluminum backboard such that the dimensions of the aluminum backboard are 4-5 mm smaller those of the glass; forming a square aperture at the position of the electrode lead of the aluminum backboard; insulating the square aperture by cushioning a small insulating material or wrapping the edges with an insulation film when arraying and laying the modules; laminating and trimming the superimposed module components; wrapping the trimmed laminated piece around the edge with the 0.5-1 mm insulation tape; finally, framing up the laminated piece by using a frame filled with silica gel, and installing the terminal box. The invention is convenient to operate and low in investment and has a wide application prospect.

Abstract: A method for insulating an aluminum backboard of a photovoltaic module comprises the following steps: shearing the aluminum backboard such that the dimensions of the aluminum backboard are 4-5 mm smaller those of the glass; forming a square aperture at the position of the electrode lead of the aluminum backboard; insulating the square aperture by cushioning a small insulating material or wrapping the edges with an insulation film when arraying and laying the modules; laminating and trimming the superimposed module components; wrapping the trimmed laminated piece around the edge with the 0.5-1 mm insulation tape; finally, framing up the laminated piece by using a frame filled with silica gel, and installing the terminal box. The invention is convenient to operate and low in investment and has a wide application prospect.