Abstract: The new generation of doppler weather radar base data transmission is always the assessment of key project in professional work, and also is the necessity for many short-term weather forecast systems.All along, the base data transmission work is done by RPGCD program.But after long-term continuous operation, we found that RPGCD program occupies large system resources while transmitting, and affected the stability of the whole radar system.This paper pay attention to improving transmission and compression algorithm, and redesigned a set of transmission program.Operation result shows that this new program is effective in relieving the resource occupation and radar system instability.