| ID | Title | Requirements |
| URD0001 | Size | The satellite shall be designed as 3 U [TBD] cube satellite |
| URD0002 | Orbit | The satellite shall be operated on low earth orbit (LEO) at 400–600 km [TBD] of altitudes |
| URD0003 | Payloads | The satellite shall carry at least the following payloads- Four photodetectors- Laser retro-reflector array- Laser communication terminal (LCT) |
| URD0004 | Uplink propagation measurement | The four photodetectors shall be able to measure the center position of the beam within the relative error rate of 1% [TBD] |
| URD0005 | SLR link budget | The reflected laser from the satellite shall have an average number of photons of at least 1E + 5 [TBD] or more |
| URD0006 | Laser communication field of view (FOV) | Laser shall enter a LCT at least 1° [TBD] from the center axis |