Table 2. Expected specification for small satellite for ADR mission

Contents Specification
System/Bus Altitude 500 km → 800 km rising → Earth re-entry
Mass < 500 kg (including payload and propellant)
Lifetime > 1 year
Power ~300 W
Attitude control 3 axis attitude control
Payload Vision sensor Monitoring/Control the ADR and RD
IR sensor Sensing the target with -40 to 120 degree of temperature
Lidar Precise distance observation (~500 m)
Space net Net for capturing
Robotic arm Arm more than 6 degree of freedom
Docking system Docking device in Rendezvous
Transmission X-band Transmitter (~100 Mbps)
Storage capacity ~128 G
ADR, active debris removal; RD, Rendezvous and Docking.