# 5.4.1 Relative location - When the Correlated distance option is checked, the positions of the receiver and transmitter are geographically fixed with respect to each other (e.g. co-located or constantly spaced base stations). The transmitter is considered a reference centre. - When the correlated distance is unchecked, the receiver is randomly moving around the transmitter. There are 2 primary options to define type of mutual placement of VLR with respect to VLT. See ANNEX 12: for further details on the algorithm and conventions. ![image.png](https://wiki.cept.org/uploads/images/gallery/2026-04/scaled-1680-/70SixnzSAJx9O9hy-image.png)
**Figure 150: Relative location panel**
**Table 15: Relative location GUI**
**Description** **Symbol** **Type** **Unit** **Comments**
**Correlation distance** - Boolean - When checked, the only the Delta X and Y are editable.
**Delta X** X Distribution Km Horizontal distance between the transmitter and receiver. It can be used to shift horizontally the distributed receivers.
**Delta Y** Y Distribution Km Vertical distance between the transmitter and receiver. It can be used to shift vertically the distributed receivers.
**Path azimuth** - Distribution Degree Horizontal angle for the location of the Rx respect to the Tx. If constant, the Rx’s location will be on a straight line. If not, the location of the Rx will be on an angular area. (See Annex A12.3)
**Path distance factor** - Distribution - Distance factor to describe path length between the Tx and the Rx. If the path factor is constant, the Rx will be located on a circle around the Tx. (See Annex A12.2)
**Use of polygon** - Boolean - When this is checked, you can select other shape of deployement than the default circle
**Shape of the polygon** - Boolean - You can select between hexagon (6 sides), heptagon (7 sides), Octagon (8 sides), Pentagon (5 sides), Rectangle (4 sides) and Triangle (3 sides)
**Turn CCW** - Distribution Degree Allows to rotate counter clock wise the selected polygon