:orphan: .. **************************************************************************** .. CUI .. .. The Advanced Framework for Simulation, Integration, and Modeling (AFSIM) .. .. The use, dissemination or disclosure of data in this file is subject to .. limitation or restriction. See accompanying README and LICENSE for details. .. **************************************************************************** false_target ------------ .. command:: false_target ... end_false_target :block: .. parsed-literal:: false_target_ ** *WSF_FALSE_TARGET* debug_ false_target_behavior_ ** multi_radar_behavior_ ** persistence_ quantity_ ** range_constrained_ scan_rate_ ** scan_time_ ** false_target_movement_ ... end_false_target_movement track_movement_ ... end_track_movement distribution_ ... end_distribution distribution_centroid_ ... end_distribution_centroid end_false_target Overview ======== :command:`false_target` specifies the characteristics of a false target technique, which is incorporated into electronic attack (EA) techniques. The false target technique is used to generate and maintain false target representations without creating a platform instance for each false target. Thus, radar sensors can be forced to deal with large numbers of false targets without the processor loading of large numbers of platforms. The :command:`false_target_screener` provides the mechanism for radars to manage and react to false target techniques. Commands ======== .. command:: debug Set debug mode. .. command:: false_target_behavior '' Specifies the fidelity of the false target technique. * **random_scan_to_scan** - False targets created randomly for each scan. * **consistent_scan_to_scan** - False target are maintained and updated for each scan (i.e., correlated). **Default** random_scan_to_scan .. command:: multi_radar_behavior '' Specifies the fidelity of the false target technique across multiple radar sites. * **random_to_multiple_radars** - False targets appear random to individual radars. * **consistent_to_multiple_radars** - False targets appear correlated to multiple radars (i.e., choreographed). **Default** random_to_multiple_radars .. command:: persistence Specifies the persistence of the false target from scan to scan. The number of false targets will be reduced by 1 minus this value from scan to scan. **Default** 1.0 .. command:: quantity Specifies the number of false targets to create. **Default** The :model:`WSF_FALSE_TARGET_EFFECT` :model:`jamming_pulse_density ` input is used with its default or input value .. command:: range_constrained Specifies whether false targets can be produced forward of the jammer's position. To be able to produce false targets forward of the jammer requires detailed knowledge of the targeted radar's PRF sequence. **Default** false .. command:: scan_rate .. command:: scan_time Specify the false-target scan rate/time for the random_scan_to_scan false_target_behavior_ type. .. note:: This command is only valid when used with the random_scan_to_scan false_target_behavior_. Use of this command with other false_target_behavior_ types will have no effect. **Default** Scan rate/time (frame_time of the system being effected) .. command:: track_movement ... end_track_movement .. command:: false_target_movement ... end_false_target_movement :block: Defines the movement of the false target blips (i.e., tracks) in terms of direction (heading) and speed. To define the false target movement: .. parsed-literal:: false_target_movement_ headings_ speeds_ reference_ [ "jammer" | "none" ] end_false_target_movement .. command:: headings Specifies the direction of movement for the false targets wrt due north. If minimum and maximum are equal all headings will be the same on the blips, if they are not equal then random headings will be drawn with the limits and set for each false target blip separately as to its speed. **Default** 0.0 degrees 360.0 degrees .. command:: speeds Specifies the minimum and maximum at which the false targets will move in the direction of the heading. If minimum and maximum speeds are equal all speeds will be the same on the blips, if they are not equal then random speeds will be drawn with the limits and set for each false target blip separately as to its speed. **Default** 0.0 m/s 0.0 m/s .. command:: reference [ "jammer" | "none" ] Specifies the heading reference for which to move the false target blips if a non-zero speed is entered desired. **Default** "none" .. end:: .. command:: distribution ... end_distribution :block: Defines the false target dispersion about the distribution_centroid_ in the direction of the reference_bearing: To define the dispersion: .. parsed-literal:: distribution_ bearing_reference_ [ "jammer" | "north" ] radius_ sector_arc_ azimuth_extent_ ... end_azimuth_extent range_extent_ ... end_range_extent range_distribution_ ["uniform" | "exponential" | "log"] end_distribution .. command:: bearing_reference [ "jammer" | "north" ] Specifies the bearing reference in which to display false-targets. Works in conjunction with the azimuth_extent_ input. **Default** "jammer" .. command:: radius Specifies the radius in which to generate false-targets around the reference_centroid if entered or the receiver if not. **Default** Minimum of the antenna's maximum range or the maximum pulse_repitition_interval (PRI) range on the effecting system .. command:: sector_arc Specifies the sector arc in which to generate false-targets. **Default** -180 degrees 180 degrees .. command:: azimuth_extent ... end_azimuth_extent Specifies the azimuth extents in the range of [-180 degrees, 180 deg] of which to produce false-targets. Reference azimuth is to the bearing_reference_. This input can be repeated for multiple azimuth extents. **Default** -180 degrees 180 degrees .. command:: range_extent ... end_range_extent Specifies the range extents in which to generate false targets around the centroid if entered or the receiver if not. This input can be repeated for multiple range extents. **Default** Minimum of the Antennas maximum range on the effecting system or the maximum pulse_repitition_interval (PRI) range of the effecting system if a PRI is specified. .. command:: range_distribution ["uniform" | "exponential" | "log"] Specifies the range distribution statistical model type to use for the range distribution of the false targets. .. note:: A "uniform" distribution will have a higher density towards the center, an "exponential" distribution will have a more linear spacing at all ranges and a "log" distribution will have a higher density towards the outer range limits for a radar. **Default** "uniform" .. end:: .. command:: distribution_centroid ... end_distribution_centroid :block: Centroid coordinates for the false target distribution_. The centroid is able to move in any specified direction so the false target distribution centroid may change to allow for a new distribution center for random_scan_to_scan false_target_behavior_ type. To initialize the distribution centroid: .. parsed-literal:: distribution_centroid_ altitude_ position_ heading_ speed_ end_distribution_centroid .. command:: altitude Specifies the altitude of the reference centroid on which to generate false-target. .. command:: position Specifies the latitude and longitude of the reference centroid on which to generate false-target. **Default** Centroid of the system that the false-target effect is effecting. .. command:: heading Specifies the heading (i.e., direction of movement) for the centroid. **Default** 0.0 .. command:: speed Specifies the speed at which the centroid will move. **Default** 0.0 .. end::