File:Earth Centered Inertial Coordinate System.png
Summary
To show a location about the earth using the ECI system; the Cartesian Coordinates are used. The x-y plane coincides with the Earth’s equatorial plane. The x axis is permanently fixed in a direction relative to the celestial sphere (which does not rotate like the Earth does). The z axis lies at a 90 angle to the equatorial plane and extends through the North Pole. The Earth rotates, the ECI Coordinate system does not. Due to forces exerted from the sun and moon, the Earth’s equatorial plane moves with respect to the celestial sphere. Since our measurements are calculated relative to satellite positions, this movement will cause error to position solutions if the ECI system were used.
Licensing
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File history
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 10:33, 13 January 2017 | | 548 × 458 (104 KB) | 127.0.0.1 (talk) | To show a location about the earth using the ECI system; the Cartesian Coordinates are used. The x-y plane coincides with the Earth’s equatorial plane. The x axis is permanently fixed in a direction relative to the celestial sphere (which does not rotate like the Earth does). The z axis lies at a 90 angle to the equatorial plane and extends through the North Pole. The Earth rotates, the ECI Coordinate system does not. Due to forces exerted from the sun and moon, the Earth’s equatorial plane moves with respect to the celestial sphere. Since our measurements are calculated relative to satellite positions, this movement will cause error to position solutions if the ECI system were used. |
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