Clutter Geometry

To configure the clutter geometry algorithm, which determines the location of each clutter point relative to the radar, and use it on a particular radar, select Enabled and choose one of the following options:

Option	Description
Single Point	Computes a single clutter point on the target.
Range Over CFAR Cells.	Use this with CA-CFAR and OS-CFAR algorithms. This allows the number of CFAR reference cells, specified on the Radar->Mode->Probability of Detection tab, to be spread evenly before and after the cell of interest. Clutter is evaluated along the current scan radial before and after the cell containing the target of interest. It uses the Number of Reference cells value, provided on the Probability of Detection tab. It considers half of the number of cells before and half of the number cells after the cell of interest. For example, if the number of reference cells is 32, then the 16 cells before and the 16 cells after the current cell of interest are evaluated for clutter. The current cell of interest is the cell where Probability of Detection is being computed. AGI recommends this option for use with the Cell Averaging Constant False Alarm Rate (CA-CFAR) option or the Ordered Statistics Constant False Alarm Rate (OS-CFAR) option on the Probability of Detection tab.
COM Plugin	If a Clutter Geometry Model COM plugin exists on your machine and is properly registered, it will be selectable from the Clutter Geometry shortcut menu. For more information, see Plugin Points and Engine Plugin Registration.

Option

Description

Single Point

Computes a single clutter point on the target.

Range Over CFAR Cells.

Use this with CA-CFAR and OS-CFAR algorithms. This allows the number of CFAR reference cells, specified on the Radar->Mode->Probability of Detection tab, to be spread evenly before and after the cell of interest.

Clutter is evaluated along the current scan radial before and after the cell containing the target of interest. It uses the Number of Reference cells value, provided on the Probability of Detection tab. It considers half of the number of cells before and half of the number cells after the cell of interest. For example, if the number of reference cells is 32, then the 16 cells before and the 16 cells after the current cell of interest are evaluated for clutter. The current cell of interest is the cell where Probability of Detection is being computed.

AGI recommends this option for use with the Cell Averaging Constant False Alarm Rate (CA-CFAR) option or the Ordered Statistics Constant False Alarm Rate (OS-CFAR) option on the Probability of Detection tab.

COM Plugin

If a Clutter Geometry Model COM plugin exists on your machine and is properly registered, it will be selectable from the Clutter Geometry shortcut menu. For more information, see Plugin Points and Engine Plugin Registration.