Impressive Collection Capacity
BJ3A has an impressive daily collection capacity of 750,000 sq km along with a 23.5-km swath width.
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sales@apollomapping.com (303) 993-3863BJ3A Satellite
Twenty First Century Aerospace Technology’s first 50-cm resolution 4-band satellite.
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The BJ3A Advantage
Expanding High-Resolution Archive
Our high-resolution archive continues to expand daily with BJ3A’s 50-cm resolution satellite imagery.
4-Band Multispectral Imagery
BJ3A provides 50-cm resolution panchromatic and 2-meter resolution multispectral bands, including blue, green, red, and near-infrared (NIR).
Overview & History
Twenty First Century Aerospace Technology launched their first 50-centimeter (cm) resolution satellite, BJ3A, on June 11, 2021 from TaiYuan, China. BJ3A collects 50-cm resolution panchromatic and 2-meter resolution multispectral imagery, including blue, green, red, and near-infrared (NIR) bands. Its swath-width of 23.5-kilometers (km) allows for an impressive daily collection capacity of 750,000 square kilometers (sq km). BJ3A joins Twenty First Century Aerospace Technology’s 80-cm Triplesat satellites as a part of their growing high-resolution constellation.
BJ3A Specifications
Launch Details
- Launch Date: June 11, 2021, 03:03:00 UTC
- Vehicle: Long March CZ-2D
- Site: Taiyuan Satellite Launch Center, Taiyuan, China
- Expected Mission Life: at least 8 years
BJ3A Components
- Dimensions: 2.6-meters (m) tall x 2.7-m across; 1,200 kilograms
- Control Systems:
- 3-axis stabilized
- Actuators–control movement gyros (CMGs)
- Altitude determination–star trackers, GPS
- Onboard Storage Capacity: 6 Terabyte (TB) solid state drive
- Ground Communication Systems:
- Imagery & metadata downlink–2 x 450 Megabytes per second (Mbps), X-band
- Focal Plane: two in-line mounted, identical panchromatic and multispectral camera arrays with 12-km swath width each; 23.5-km swath width for combined in-line cameras
Orbit Characteristics
- Altitude: 500 km
- Period: 95 minutes
- Inclination: 97°
- Direction: sun-synchronous circular, south to north (across the lit side of Earth)
- Mean Local Crossing Time: 11:00 local time (approximate; across lit side of Earth)
- Revisit Frequency: (at 40°N)
- 4 days (≤ 20° off-nadir)
- 3 days (≤ 35° off-nadir)
Imaging System
- Spectral Bands:
- Panchromatic
- 4-band multispectral (blue, green, red and near-infrared red [NIR])
- Sensor Resolution:
- At nadir–50-cm panchromatic & 2-m multispectral
- 20° off-nadir–57-cm panchromatic & 2.28-m multispectral
- 30° off-nadir–67-cm panchromatic & 2.68-m multispectral
- Spectral Band Wavelength Range: (in nm)
- Panchromatic–450 to 700
- Blue–450 to 520
- Green–520 to 590
- Red–630 to 690
- NIR–770 to 890
- Dynamic Range: 12-bits
Collection Capabilities
- Footprint Width: 23.5 km (at nadir)
- Single Pass Maximum Collection Geometry:
- Mono–70 km x 170 km (7 strips wide)
- Stereo–23.5 km x 70 km (3 pairs wide)
- Daily Collection Capacity: 750,000 sq km
- Georeferenced Horizontal Accuracy: < 10-m CE90 (global average, dependent on terrain)
Pricing
Data Source
archive
Minimum Order Size
25 sq km (per area & date)
Product Type
50-cm georeferenced + natural color or 4-band
Price Per Sq Km
Looking for a BJ3A spectral response curve to be used in an atmospheric correction and/or radiance conversion?
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