The reaserch to improve the precision of the laser pulse ranging in short distance

The laser pulse ranging is used in military,remote sensing,engineering construction and so on,for it's simple structure,non-cooperative target,the far measuring distance and the quickly measuring speed.Because the laser pulse ranging relative error is high,the application in short distance is restricted.The error of the laser pulse ranging in short distance is analyzed.By using the MCU to control TDC-GP2 chip for repeated measurements in a measurement cycle,the average is calculated and output by MCU.With the technology of automatic gain control,temperature control,APD received and amplified,the accuracy in short distance for the laser pulse ranging get a great improvement.