10 m-resolution hyperspectral microsatellite platform (32 bands, 2.5 nm spectral resolution) forming the OHS series of the Zhuhai-1 constellation.
Orbita OHS Hyperspectral Satellite
10 m-resolution hyperspectral microsatellite platform (32 bands, 2.5 nm spectral resolution) forming the OHS series of the Zhuhai-1 constellation.
Description
The OHS is Orbita's hyperspectral-imaging microsatellite platform, the core payload of the Zhuhai-1 constellation's spectral-imaging capability. Each 67 kg satellite operates in a 500 km sun-synchronous orbit and captures imagery across 32 spectral bands spanning 400-1000 nm at 2.5 nm spectral resolution, with 10 m ground sampling distance and a 150 km x 2500 km image-scan swath. Two sets of four satellites (OHS-2A/B/C/D and OHS-3A/B/C/D) were launched in April 2018 and September 2019 respectively on CZ-11 rockets from Jiuquan, alongside the OVS-2/OVS-3 video satellites. OHS data is used for agriculture, forestry, water quality, ecological and environmental monitoring, and mineral/land-cover classification.
Specifications
| Model | OHS-2A, OHS-2B, OHS-2C, OHS-2D, OHS-3A, OHS-3B, OHS-3C, OHS-3D |
|---|---|
| Orbit altitude | 500 km @ SSO |
| Mass | 67 kg |
| Coverage (image scan mode) | 150 km x 2500 km |
| Spatial resolution | 10 m |
| Spectrum range | 400-1000 nm |
| Spectrum resolution | 2.5 nm |
| Bands | 32 |
| SNR | ≥300 |
| Data transmission rate | 300 Mbps |
| Launch dates | OHS-2 series: April 26, 2018; OHS-3 series: Sept 19, 2019 |
| Launch vehicle | CZ-11 |
| Launch site | Jiuquan Satellite Launch Center (JSLC) |