What is the 25KG Satellite Platform
The 25KG Satellite Platform is a dual-payload satellite platform built on a foundation of functional safety,
ensuring high reliability across all critical components through redundant design. By upgrading the satellite’s attitude control execution components, optimizing attitude control algorithms, adjusting power structures, and improving spatial layout, the platform supports payloads up to 10U (9 kilograms) while maintaining high attitude control precision.
Description:
The platform ensures functional safety with redundant designs in the onboard computer, power subsystems, communication systems, and more, enhancing overall satellite reliability. Featuring a dual-compartment design, the 25KG Satellite Platform maximizes spatial efficiency and enriches energy capabilities. The payload compartment occupies approximately 50% of the satellite volume with a peak power consumption of up to 130W. It successfully carries out in-orbit verification missions for dual payloads, having already deployed tasks with payloads such as remote sensing cameras, laser communication devices, and VPX integrated processors.
What systems do satellite platforms consist of:
For attitude determination, the platform utilizes a multi-sensor confirmation approach combining star trackers, sun sensors, magnetometers, GPS, and IMUs. High-precision momentum wheels with torque control accuracy ≤0.1mNm ensure satellite stability with an attitude stability of <0.05°/s and pointing accuracy better than 0.1°. This stability allows the satellite to maneuver within a small range to assist devices like laser communication units in precise communications.
Characteristics of satellite platform:
The 25KG Satellite Platform is highly scalable with stable payload interfaces and abundant energy resources, allowing flexible selection of core payloads based on mission requirements. It supports a variety of space missions, making it an ideal choice for advanced aerospace applications.
Additional Information:
| carrying mass | 9-10KG |
|---|---|
| Load capacity | 100 x 200 x 300 mm³ |
| Load available power | 90W |
| Available voltage for load | 3.3V / 5V / 12V |
| Available interfaces for payloads | CAN / RS422 / LVDS / Camera-Link / IIC / SPI |
| Whole star mass | 27kg±1kg |
| Standard sizes | 374mm(X)×496mm(Y)×595mm(Z) |
| Whole star power consumption | Peak power consumption 130.7W |
| track | SSO(500Km) |
| Design life | 3 years |
| Postural stability form | Three-axis stabilization |
| Pointing accuracy | 0.1° |
| measurement accuracy | 0.03° |
| Postural stability | 0.05°/s |
| Side swing range | ±30° |
| Attitude maneuver response capability | Greater than (10°/20s |
| positioning accuracy | 5m(3σ) |
| time accuracy | 1ms |
| Speed accuracy | 0.1m/s |
| solar array | Triple junction gallium arsenide, power input ≥160W |
| bus voltage | 13~16.8V |
| Battery pack | 20Ah (configurable) |
| UV measurement and control code rate | Uplink 1200bps |
| X measurement and control code rate | Uplink 16Kbps |
| data rate | ≤40Mbps, with breakpoint resume capability |
| temperature range | +5℃～+25℃(adjustable) |