0.75m-Resolution Satellite vs. 0.5m-Resolution Satellite: Specifications, Materials and Supplier Documentation
SIDE BY SIDE
0.75m-Resolution Satellite vs. 0.5m-Resolution Satellite: Specifications, Materials and Supplier Documentation
Astralink Science and Technology Co., Ltd. offers two independently documented high-resolution optical remote sensing satellite lines — the 0.75m-Resolution Satellite (GF series) and the 0.5m-Resolution Satellite (GF series). This comparison examines both products across the same decision-relevant criteria — imaging mode, ground resolution, spectral coverage, swath width, satellite weight and on-board capabilities — using only confirmed product documentation. Buyers selecting between the two can use this side-by-side breakdown to align platform choices with mission requirements such as coverage width, mass constraints or on-satellite intelligence needs.
0.75m-Resolution Satellite (GF series, three documented configurations at ≈20 kg / ≈40 kg / ≈200 kg)
0.5m-Resolution Satellite (GF series, single documented configuration at ≈90 kg)
Overview
Astralink Science and Technology Co., Ltd. develops new-generation optical remote sensing satellites under its GF series product line. Two commercially documented options are available: the 0.75m-Resolution Satellite and the 0.5m-Resolution Satellite. Both are independently researched and developed by the company and address high-resolution earth observation needs, yet they differ in resolution, swath width, weight, imaging modes and on-board intelligence features. This article compares both products across equal criteria drawn strictly from confirmed product documentation.
Product Summaries
0.75m-Resolution Satellite
The 0.75m-Resolution Satellite is described as a new-generation optical remote sensing satellite independently researched and developed by Astralink Science and Technology Co., Ltd. It is engineered with a lightweight structure, a highly integrated electronics system, and a high-resolution ultra-lightweight camera. Key design goals include low cost, low power consumption, lightweight form factor and high performance indicators.
The product documentation lists three distinct satellite configurations under the 0.75m-Resolution Satellite designation, each sharing the 0.75m resolution but differing in swath width, weight and imaging mode:
| Configuration | Imaging Mode | Swath Width (at Nadir) | Weight |
|---|---|---|---|
| Config A | Push-broom and inertial space imaging | 17 km | ≈ 40 kg |
| Config B | Push-broom and inertial space imaging | 40 km | ≈ 200 kg |
| Config C | Push-broom and video imaging | 18 km | ≈ 20 kg |
Full-color spectral coverage varies slightly across the three configurations (450 nm–700 nm or 450 nm–800 nm for panchromatic/full color channels), while multispectral bands (Blue, Green, Red, Near-infrared) are consistent across all configurations within the 430–895 nm range.
0.5m-Resolution Satellite
The 0.5m-Resolution Satellite is a single documented configuration within the GF series. It is described as having the functions of independent on-satellite mission planning, real-time data transmission and on-satellite AI. Combined with fast maneuvering control, the satellite supports single-orbit multi-point target imaging and fast information return. It captures static push-broom images at 0.5m panchromatic resolution with a swath width better than 15 km and is characterized by high resolution, high integration and intelligence.
| Configuration | Imaging Mode | Swath Width (at Nadir) | Weight |
|---|---|---|---|
| Single configuration | Push-broom imaging | 15 km | ≈ 90 kg |
Side-by-Side Comparison
1. Ground Resolution
| Criterion | 0.75m-Resolution Satellite | 0.5m-Resolution Satellite |
|---|---|---|
| Panchromatic / Full-color resolution | 0.75 m | 0.5 m (full color) |
The 0.5m-Resolution Satellite offers a finer ground sample distance in its single documented configuration. The 0.75m-Resolution Satellite family covers three configurations, all at 0.75m.
2. Imaging Mode
| Criterion | 0.75m-Resolution Satellite | 0.5m-Resolution Satellite |
|---|---|---|
| Documented modes | Push-broom; inertial space imaging (Configs A & B); push-broom and video imaging (Config C) | Push-broom imaging |
The 0.75m line includes an inertial space imaging mode (Configs A and B) and a video imaging mode (Config C), offering broader operational flexibility in documented configurations. The 0.5m satellite's documentation describes push-broom imaging only.
3. Spectral Coverage
Both satellite lines support panchromatic and multispectral imaging. Documented spectral bands are compared below.
0.75m-Resolution Satellite — Config A
| Band | Range |
|---|---|
| Full color | 450 nm – 700 nm |
| Blue | 430 nm – 520 nm |
| Green | 520 nm – 610 nm |
| Red | 610 nm – 690 nm |
| Near-infrared | 770 nm – 895 nm |
0.75m-Resolution Satellite — Config B
| Band | Range |
|---|---|
| Full color | 450 nm – 800 nm |
| Blue | 450 nm – 510 nm |
| Green | 510 nm – 580 nm |
| Red | 630 nm – 690 nm |
| Near-infrared | 770 nm – 895 nm |
0.75m-Resolution Satellite — Config C
| Band | Range |
|---|---|
| Panchromatic | 450 nm – 700 nm |
| Blue | 430 nm – 520 nm |
| Green | 520 nm – 610 nm |
| Red | 610 nm – 690 nm |
| Near-infrared | 770 nm – 895 nm |
0.5m-Resolution Satellite
| Band | Range |
|---|---|
| Panchromatic color | 450 nm – 700 nm |
| Blue | 450 nm – 510 nm |
| Green | 510 nm – 580 nm |
| Red | 630 nm – 690 nm |
| Near-infrared | 770 nm – 895 nm |
All four configurations cover Blue, Green, Red and Near-infrared multispectral bands, with near-infrared consistently ranging from 770 nm to 895 nm. The main differentiator between the 0.75m Config B and the others is the wider full-color channel extending to 800 nm.
4. Swath Width (at Nadir)
| Configuration | Swath Width |
|---|---|
| 0.75m – Config A | 17 km |
| 0.75m – Config B | 40 km |
| 0.75m – Config C | 18 km |
| 0.5m – Single config | 15 km (better than) |
Config B of the 0.75m line offers the widest documented swath at 40 km, making it the broadest-coverage option among all configurations documented here. The 0.5m satellite and 0.75m Configs A and C are in a comparable 15–18 km range.
5. Satellite Weight
| Configuration | Weight |
|---|---|
| 0.75m – Config A | ≈ 40 kg |
| 0.75m – Config B | ≈ 200 kg |
| 0.75m – Config C | ≈ 20 kg |
| 0.5m – Single config | ≈ 90 kg |
The lightest documented platform is 0.75m Config C at approximately 20 kg, while the heaviest is 0.75m Config B at approximately 200 kg. The 0.5m satellite at approximately 90 kg sits between the 0.75m light and heavy variants.
6. On-Board Capabilities and Intelligence
| Criterion | 0.75m-Resolution Satellite | 0.5m-Resolution Satellite |
|---|---|---|
| On-satellite mission planning | Yes (independent on-satellite mission planning) | |
| Real-time data transmission | Yes | |
| On-satellite AI | Yes | |
| Fast maneuvering control | Yes (single-orbit multi-point target imaging) | |
| Lightweight / low-cost design focus | Yes (lightweight structure, low cost, low power consumption emphasis) | Not specifically stated in materials |
The 0.5m-Resolution Satellite features on-satellite AI, real-time data transmission and fast maneuvering as core features. The 0.75m-Resolution Satellite features a lightweight, low-cost and low-power-consumption design.
Comparison Summary Table
| Criterion | 0.75m-Resolution Satellite | 0.5m-Resolution Satellite |
|---|---|---|
| Resolution | 0.75 m | 0.5 m |
| Imaging modes documented | Push-broom, inertial space, video | Push-broom |
| Swath width range (documented) | 17 km / 40 km / 18 km | ≥ 15 km |
| Weight range (documented) | ≈ 20 kg to ≈ 200 kg | ≈ 90 kg |
| Multispectral bands | Blue, Green, Red, NIR (all configs) | Blue, Green, Red, NIR |
| On-satellite AI documented | Yes | |
| Real-time data transmission documented | Yes | |
| Independent mission planning documented | Yes | |
| Design emphasis documented | Lightweight, low cost, low power | High integration, intelligence |
Guidance for Procurement Teams
The two GF series product lines address different segments of the high-resolution optical remote sensing market. Key considerations supported by available documentation:
- Resolution requirement: Procurement teams requiring sub-meter resolution finer than 0.75 m should consider the 0.5m-Resolution Satellite, whose panchromatic resolution is 0.5 m.
- Coverage area per pass: 0.75m Config B has a 40 km swath — substantially wider than any other configuration — which may reduce the number of passes required for area coverage missions.
- Mass budget: The 0.75m line covers a wide weight range (≈ 20 kg to ≈ 200 kg), with Config C being the lightest. Buyers with strict mass-to-orbit constraints should review which specific configuration applies.
- Autonomous operation and AI: The 0.5m-Resolution Satellite explicitly documents on-satellite AI, independent mission planning and real-time data transmission. These features are not described in the 0.75m documentation reviewed.
- Multi-mode imaging: Inertial space imaging and video imaging are described under the 0.75m line (Configs A/B and C respectively), while the 0.5m satellite documents push-broom imaging only.
All specifications should be verified against current technical datasheets and confirmed with Astralink Science and Technology Co., Ltd. prior to procurement decisions.
About the Supplier
Astralink Science and Technology Co., Ltd. focuses on the research and development of high-performance, low-cost satellites and air-space-ground integrated remote sensing information services. Its main business covers Full Satellite Services, Components and Parts Services, and Satellite Data. The company also offers customized satellite manufacturing and related services, including satellite and component testing services, carrying services, naming services and remote sensing information services.
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Astralink Science and Technology Co., Ltd.
Astralink has always adhered to the business model for the integrated development of high-end equipment manufacturing and information services, focusing on the research and development of high-performance, and low-cost satellites and the air-space-ground integrated remote sensing information services.…
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