- 行业: Earth science
- Number of terms: 93452
- Number of blossaries: 0
- Company Profile:
Founded in 1941, the American Congress on Surveying and Mapping (ACSM) is an international association representing the interests of professionals in surveying, mapping and communicating spatial data relating to the Earth's surface. Today, ACSM's members include more than 7,000 surveyors, ...
Any device that takes the average of a number of readings, e.g., a bubble sextant.
Industry:Earth science
A coordinate system which has its origin within the region being studied and which is used principally for points within that region.
Industry:Earth science
A description as aliquote parts of large parcels, the aliquote parts of which are not less than 10 acres. This method of description is popular in Alaska.
Industry:Earth science
Any sequence of operations on data, usually in accordance with a specified or implied set of rules.
Industry:Earth science
The value of the constant term in the formula for general precession as a function of time.
Industry:Earth science
A coordinate system having its origin at the point of observation or, by inference, on the surface of the Earth or the ellipsoid representing the Earth. State coordinate systems are topocentric, as are military grid coordinate systems. Many astronomic coordinate systems are topocentric, having their origin at the observatory using the system.
Industry:Earth science
A photographically identifiable point whose location has been determined photogram-metrically or by use of an accurate positioning, locating, or navigation system. Locating systems such as HIRAN and SHIRAN have been used for this purpose.
Industry:Earth science
With reference to events, the property that the probability of one event occurring depends on (is related to) the occurrence of another event.
Industry:Earth science
Control put in by using airborne electronic-surveying equipment such as Hiran or Shoran.
Industry:Earth science
The record of a continuous physical quantity representing the corresponding magnitude of a mathematical variable or measurements. e.g., the voltage between two points of an electric circuit may represent a varying distance or angle. One single point from that record is called an analog datum.
Industry:Earth science
