
62
Promark2 User’s Guide
described below along with recommendations on when to use them.
Bar Point Initialization
Bar Point initialization is specific to ProMark2 and is performed using the supplied kinematic
initializer bar. Bar Point initialization is the second quickest method of initializing a kinematic
survey after initializing on a known point. Initialization time when using the bar is 5 minutes.
The bar method is best used when there is no known point to utilize for initialization.
The concept of Bar Point initialization is similar to using a static survey to initialize your
kinematic survey (discussed later). By performing a 5 minute observation on the bar, you are
establishing the coordinates of the rover receiver on the other end of the bar. Once the
coordinates of the rover location are established, the kinematic survey can be initialized. A 5
minute observation is all that is needed because we have some initial information regarding the
short vector between the base and rover receivers. We know that the vector is exactly 0.200
meters long (the length of the bar). We also know that the delta height of the vector is 0.000
(base and rover receivers are at the same HI). Based on this given information, the coordinates
of the rover location can be established with a short 5 minute observation.
Use the Bar Point initialization method under the following conditions:
• Your project area does not contain any control points that meet the requirements to
perform a Known Point initialization. If such control does exist, use the Known
Point method since it is a quicker initialization method.
• The kinematic base is located on the project site near the area to be surveyed. This
is important since a Bar Point initialization must be performed at the kinematic
base station. If the kinematic base must be positioned a distance from the project
area, you may be better served using the New Point method of initialization.
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