1 Payload Design of StarPool-1 Group 2 A/B Satellites 

The satellite payloads include a multi-spectral camera, a hyper-spectral camera (Satellite A), an thermal infrared camera (Satellite B), a wide-swath camera, a GNSS-R payload, an inter-satellite laser com. payload, and an atomic clock.

1.1 Multi-spectral Camera

1.2 Hyper-spectral Camera   

1.3 Thermal Infrared Camera

1.4  Panchromatic Camera

Satellite Remote Sensing Capabilities

1）High-resolution Multispectral Camera

2）Hyper-spectral Imaging

Nadir Resolution：Superior to 20m@630km；

Spectral Resolution：Superior to 5nm@400nm-1000nm；

Swath Width：Not less than 40km@630km；

3）GNSS-R&RO

Capable of receiving and processing direct, reflected, and occultation signals from satellite navigation systems；

Wind Speed Retrieval Accuracy：2m/s@≤20m/s；10%@20m/s~60m/s；

Seawater Humidity ≥95%，Seawater Detection Accuracy ≥95%

Neutral Atmosphere Observation Field of View (FOV) Range：Near-Surface to 80 km

Navigation Enhancement Capability

1）Joint Orbit Determination Indicators

Orbit < 10cm;

Clock offset < 0.1ns (GPS, Global Positioning System), < 0.2ns (BDS, BeiDou Navigation Satellite System);

Differential Code Bias (DCB) monthly stability STD (Standard Deviation) < 0.05ns;

Uncalibrated Phase Delay (UPD) daily STD (Standard Deviation) < 0.05 cycle;

Phase Center Variation (PCV) average stability < 0.5mm;

Orbit correction broadcast period is 30 seconds;

Clock offset correction data broadcast period is 10 seconds.

2）Ionospheric Modeling Indicators

Occultation global ionospheric TEC (Total Electron Content) accuracy: 2~5TECU (Total Electron Content Unit) (2025-2028 is the solar activity peak);

Update latency better than 3 minutes;

Temporal resolution better than 5 minutes, spatial resolution 1°~3°;

Occultation VTEC (Vertical Total Electron Content) and global ionospheric grid model STD (Standard Deviation) < 5TECU (Total Electron Content Unit);

Ionospheric model broadcast period is 30 seconds.

3）Terminal Real-Time Kinematic Precise Point Positioning and Orbit Determination Indicators

Float solution accuracy < 30cm;

Four-system fixed solution accuracy < 10cm, fix rate > 95%;

Ionosphere-free product convergence time < 10 minutes;

Ionosphere-included product convergence time < 5 minutes.