Screening method of space LMCCD surveying and mapping camera imaging circuit

The invention provides a screening method of a space LMCCD surveying and mapping camera imaging circuit and relates to a space CCD (Charge Coupled Device) imaging technology. The problems that the focal plane structure of a three linear array surveying and mapping camera of an LMCCD is compact and accordingly an additional connector is difficult to be placed to connect with an industrial CCD device for circuit board screening are solved. The circuit board screening is performed through the industrial CCD after a socket is welded at the position of a CCD of a circuit board, the CCD socket is detached after the screening is achieved, and a space CCD device is welded finally. A CCD pin is divided into two types according to a fault model of the CCD socket detachment process and the comparison is performed on static resistance values and level values before and after the socket is detached to determine whether the welding of the space CCD can be performed or not. According to the screening method of the space LMCCD surveying and mapping camera imaging circuit, defective circuit boards are eliminated through a plurality of screening test steps and accordingly the production cost is reduced and the development cycle is shortened.