|Pushbroom Imaging System
The system is based on a new optical system: a push-broom camera with a 10 m focal length, which has been folded into two meters through the use of a mirror. It is supposed that this telescope will resolve terrestrial object less than 1 meter as it passes 680 km at nadir at the speed of 7 km per second. This satellite was designed to take both panchromatic images with one-meter resolution and multispectral images with four-meter resolution. Additionally, a near-infrared band at four-meter resolution is imaged.
The entire satellite will be able to pivot in orbit to collect cross-track imagery coving a distance of 725 km at either side of the ground track. Due to the satellite's 680 km altitude, imagery will maintain at least a one-meter ground sample distance (GSD) for 350 km to either side of nadir, or a 700 km swath of at least one meter imagery.
The system is designed to carry three GPS antennas and three digital star trackers to maintain precisly camera station's position and attitude. A rigid satellite platform was built to reduce the virbation of platform and to contribute the integrity of the line-of-sight determination. The satellite will be rotating around the Earth in a sun synchronous polar orbit, which will allow it to traverse the planet every 98 minutes, crossing the equator at the same time (ca. 10.30 am ) in every orbit.
1. General Information
|Corporation "System" Name||Space Imaging|
|Payload||~ 225 - 275 kg|
|Pixels||11 bit||11 bit|
2. Orbit Information
|Flying Height||680 km|
|Inclination (deg)||98.1(deg) (Sun synchronous)|
|Repeat visite||14 days (Max)|
|Repeat Cycle||1-3 days (Max)|
3. Processing Information
|Scene (max)||Process 600/day|
|On board recording||64 GB|
|Delivery time from Acquisition to User||24 hr. - 48 hr.|
|Ground Station Sites||Denver, Alaska, Japan + Regional affiliates|
4. Sensor Information
|Swath width (km)||11 by 11|
|Field of view (FOV)||0.93|
|Stereo imaging||In & Cross track|
|Sensor attitude||3 Star trackers|
|Pointing in track Cross track||45|
|Resolution at Nadir||Panchromatic||Multispectral|
|Spectral band widths||0.45-0.9||0.45-0.52
|Kodak 1m Resolution Space Camera:
Imagery Spectral Response:
Swath Widths & Scene Sizes:
Kodak 1m Resolution Space Camera
The ability to resolve objects on the ground as small as one meter in diameter represents a tenfold increase in existing image resolution quality from what has been previously available. The imagery will possess five foot location accuracy on the ground, enabling geographic information system (GIS) users to plot highly accurate 1:2400 scale maps, among other applications
The space camera's electro-optical assembly consists of a lightweight telescope, a focal plane array, and a data compressor–all designed and manufactured by Kodak. The telescope's mirrors were finished to atomic-level smoothness using a proprietary polishing technique known as ion figuring.
Using this computer-controlled process, Kodak opticians shaped the telescope's 28 inch diameter primary mirror so perfectly that if it were enlarged to 100 miles in diameter, you could drive that distance and not hit any bumps higher than eight-hundredths of an inch. The weight of the primary mirror was reduced by cutting a honeycomb pattern into its core using abrasive waterjet technology, and fusing thin mirror plates to each face.