RCS

Set and modify RCS values for an object

Syntax

RCS <ObjectPath> {Options} <Parameters>

Related commands

• RCS_R
• RCS_RM

Description

Set and modify Radar Cross Section (RCS) values for an object.

Valid values for {Options} are SetValue, AddFrequencyBand, RemoveFrequencyBand.

The following table further describes each {Options}.

Use this command in conjunction with the RCS_RM command, which will return a list of attributes, or the properties and choices for a specific attribute.

Examples

First use the RCS_RM GetValue command to get the attributes for the Satellite RCS:

UserComment = STK Radar RCS Extension Inherit = true

Use the RCS SetValue command to set the Inherit attribute to false, then use the RCS_RM GetValue command to see what we have:

UserComment = STK Radar RCS Extension Inherit = false Model = Radar_Cross_Section Model.UserComment = Radar Cross Section Model.FrequencyBandList[0].MinFrequency = 2997920.00000000 Hz (Read-only) Model.FrequencyBandList[0].MaxFrequency = 300000000000.00000000 Hz (Read-only) Model.FrequencyBandList[0].ComputeType = Constant Value (Read-only) Model.FrequencyBandList[0].ComputeTypeStrategy = Constant Value Model.FrequencyBandList[0].ComputeTypeStrategy.ConstantValue = 1.00000000 sqm Model.FrequencyBandList[0].SwerlingCase = 0 Model.BandInsertParameters.MinFrequency = 2997920.00000000 Hz Model.BandInsertParameters.MaxFrequency = 300000000000.00000000 Hz

First let's change the minimum frequency. We see from the above output that the default units are Hz, but we want to enter the value in MHz. So we include the unit abbreviation after the frequency value:

If we entered the frequency value in the default units, then we wouldn't need to include the unit abbreviation:

Let's check the frequency value. Use the RCS_RM GetValue command with the attribute name; note that the frequency will be displayed in the default units no matter how we entered it:

Model.BandInsertParameters.MinFrequency = 2999980.00000000 Hz

Let's add a frequency band using the RCS AddFrequencyBand command:

Frequency bands are accessed via their index in the list, starting with 0. Let's look at our list:

Our new Frequency band (whose index is 1) split the initial band in half, so there are now 3 bands. Showing just the band frequencies from the RCS_RM GetValue command output we can see this.

Model.FrequencyBandList[0].MinFrequency = 2997920.00000000 Hz (Read-only) Model.FrequencyBandList[0].MaxFrequency = 4000000.00000000 Hz (Read-only) ... Model.FrequencyBandList[1].MinFrequency = 4000000.00000000 Hz Model.FrequencyBandList[1].MaxFrequency = 5000000.00000000 Hz (Read-only) ... Model.FrequencyBandList[2].MinFrequency = 5000000.00000000 Hz Model.FrequencyBandList[2].MaxFrequency = 300000000000.00000000 Hz (Read-only) ...

We want to change the SwerlingCase for our new frequency band. First we'll use the RCS_RM GetValues command with the Choices property to see what our options are:

0 I II III IV

Set the SwerlingCase attribute for the FrequencyBand we added:

To check the value we've set:

Model.FrequencyBandList[1].SwerlingCase = III

To remove the frequency band we added use the RCS RemoveFrequencyBand command and specify the minimum frequency:

Examples

Use the RCS command to set an external RCS file.

Use the RCS SetValue command to set the Inherit attribute to false, then use the RCS_RM GetValue command to see what we have:

UserComment = STK Radar RCS Extension Inherit = false Model = Radar_Cross_Section Model.UserComment = Radar Cross Section Model.FrequencyBandList[0].MinFrequency = 2997920.00000000 Hz (Read-only) Model.FrequencyBandList[0].MaxFrequency = 300000000000.00000000 Hz (Read-only) Model.FrequencyBandList[0].ComputeType = Constant Value (Read-only) Model.FrequencyBandList[0].ComputeTypeStrategy = Constant Value Model.FrequencyBandList[0].ComputeTypeStrategy.ConstantValue = 1.00000000 sqm Model.FrequencyBandList[0].SwerlingCase = 0 Model.BandInsertParameters.MinFrequency = 2997920.00000000 Hz Model.BandInsertParameters.MaxFrequency = 300000000000.00000000 Hz

Use the RCS_RM GetValue command with the Choices property to see what the options are for the ComputeTypeStategy attribute:

Constant Value External File Script Plugin

Use the RCS SetValue command to set the ComputeTypeStategy attribute to External File:

Use the RCS_RM GetValue command to get the FrequencyBandList attributes:

Model.FrequencyBandList[0].MinFrequency = 2997920.00000000 Hz (Read-only) Model.FrequencyBandList[0].MaxFrequency = 300000000000.00000000 Hz (Read-only) Model.FrequencyBandList[0].ComputeType = External File (Read-only) Model.FrequencyBandList[0].ComputeTypeStrategy = External File Model.FrequencyBandList[0].ComputeTypeStrategy.Filename = <empty> Model.FrequencyBandList[0].SwerlingCase = 0

RCS */Satellite/Satellite1 SetValue Model.FrequencyBandList[0].ComputeTypeStategy.Filename "c:/Path/To/Aircraft_RCS.rcs"

Return message

Group membership

This command belongs to the following group(s):

Facilities, Places & Targets

Scenarios

Vehicles

Version

10.1