JERS-1 ground segment:
The Tracking and Control Center (TACC) is located at the Tsukuba Space Center and is responsible for operating the spacecraft in accordance with mission requirements. It maintains the JERS-1 orbit, monitors the spacecraft health and coordinates DARs (Data Acquisition Requests). The JERS-1 tracking and control network is composed of multiple Japanese Tracking and Control Stations (TACS) and the TACC.