Pulsar Coherent De-dispersion System in the Urumqi Observatory

Pulsar coherent de-dispersion experiment was carried out by using the 25m Nanshan radio telescope in the Urumqi Observatory.It uses a dual polarization receiver operating at 18cm and a VLBI back-end, Mark5A.The data processing system is based on a C program on the Linux and a 4-node Beowulf cluster.A high quality data acquisition system and a clusterwith more processors are needed to build an on-line pulsar coherent de-dispersion system in the future.