ASM(AR) Demonstration Engagements Anti-Ship Missile Active Radar Homing

Transcription

1 ASM(AR) Demonstration Engagements Anti-Ship Missile Active Radar Homing The demonstration scenarios are: 1) Demo_1: Anti-Ship missile versus target ship executing an evasive maneuver 2) Demo_2: Anti-Ship missile versus target ship launching seduction chaff and executing an evasive maneuver 3) Demo_3: Anti-Ship missile versus target ship launching seduction chaff, generating active jamming and executing an evasive maneuver A brief interpretation of the major events occurring in each engagement is provided by reference to the time and spacial plots. Critical input parameters are shown. Selected output graphics are shown including time plots, Virtual Reality and 3D Plots. 1

2 SEA RF Master Interface The main screen of the SEA RF Master Interface is shown Clicking on the Engagements button opens the Engagement menu shown next page 2

3 SEA RF Master Interface Engagement Menu The Engagement menu of the SEA RF Master Interface is shown The Engagement ID of the SEA RF Master Interface is indicated The sample engagements Demo 1, Demo 2, and Demo 3 are listed in the Engagement ID menu 3

4 All Demos - Selected Threat System Parameters Threat System Settings Threat Menu access (see next page) Launch Platform and Missile Control System Parameters 4

5 All ASM(AR) Demos - Threat Menu Missile Subsystem Menu access (see next page) 5

6 All ASM(AR) Demos - Selected Missile Parameters Missile Seeker parameters tab Airframe Modeling Approach is set as Transfer Function Airframe Type is set as Yaw-To-Turn Missile Angle Tracking technique is set as Monopulse 6

7 All ASM(AR) Demos - Selected Missile Parameters Missile Terminal Phase parameters tab Terminal phase parameter set (nonweaving, constant cruise altitude, altimeter-controlled approach) 7

8 All ASM(AR) Demos - Target Ship Parameters Target Ship Menu access (see next page) Target Ship motion Target Ship maneuver 8

9 Selected Target Ship Parameters Target Ship properties Target Ship Radar Cross Section frequency selection menu Target Ship aspectangle dependent Radar Cross Section table for selected frequency 9

10 ASM(AR) Demo 1 - Overall Description Missile is launched from a bearing of 30 degrees at a range of 9 kilometers in midcourse phase and enters terminal phase (simulation start) in search mode at a range of 8 kilometers descending to a cruise altitude of 4 meters Ship is heading due east and at a time of 1 second, executes a clockwise 3 degree per second turn The missile acquires, approaches, and strikes the ship 10

11 ASM(AR) Demo 1 - Select Engagement Output Target Ship =Yellow Chaff = dark blue Seeker Track Point=Red Ship signature produces strong returns Missile enters terminal phase (simulation start) with seeker in search mode, then transitions to acquisition and then track of ship Clutter level increases as missile approaches ship and track gate range decreases Multipath nulls visible as missile approaches ship Missile seeker tracking ship in azimuth and elevation Missile seeker remains in Track Mode until end game As missile approaches ship, increasing clutter levels and multi-path nulls cause end-game track losses Missile hits ship (see plots on following pages) 11

12 ASM(AR) Demo 1 - Select Engagement Output Plan view Missile hits ship Wind Direction indicator 12

13 ASM(AR) Demo 1 - Select Engagement Output Virtual Reality display shows missile at point of transition from Mid-Course phase to Terminal phase Ring icon indicates position of target ship 13

14 ASM(AR) Demo 1 - Select Engagement Output Virtual Reality display shows missile approaching ship at end game 14

15 ASM(AR) Demo 1 - Select Engagement Output Missile to Target Platform miss distance = 0 meters Probability of Kill = 100 % 15

16 ASM(AR) Demo 2 - Overall Description Missile is launched from a bearing of 30 degrees at a range of 9 kilometers in midcourse phase and enters terminal phase (simulation start) in search mode at a range of 8 kilometers descending to a cruise altitude of 4 meters Ship is heading due east and at a time of 1 second, executes a clockwise 3 degree per second turn Seduction chaff walk-off launch sequence is executed by firing four chaff rockets The missile acquires the chaff, and strikes the chaff Miss Distance is 284 meters; Ship Probability of Kill is 0% 16

17 ASM(AR) Demo 2 - Selected Decoy Parameters Passive Decoy Tactics Menu access (see next page) 17

18 ASM(AR) Demo 2 - Selected Decoy 1 Parameters Decoy 1 Launch enabled Decoy 1 type selected as Chaff Chaff type selected as Seduction Seduction Chaff parameters as set 18

19 ASM(AR) Demo 2 - Select Engagement Output Target Ship =Yellow Chaff = dark blue Seeker Track Point=Red Missile seeker tracking ship Seduction chaff walk-off launch sequence executed Chaff cloud signatures produce returns that exceed ship signature return Chaff clouds capture missile seeker track Chaff drifts with wind Missile seeker tracking centroid of chaff clouds in azimuth and elevation Missile seeker remains in Track Mode until end game Missile hits chaff (see plots on following pages) 19

20 ASM(AR) Demo 2 - Select Engagement Output Range Track Gate Width 3dB Beamwidth Plan view of seeker tracking cell at intermediate time of transition of track from ship to chaff Note chaff is launched to edge of seeker tracking cell (toward edge of 3dB beamwidth and within range track gate) Seeker range track gate width indicated Seeker antenna 3dB beamwidth indicated 20

21 ASM(AR) Demo 2 - Select Engagement Output Plan view Missile hits chaff Wind Direction indicator 21

22 ASM(AR) Demo 2 - Select Engagement Output Zoom Plan view Chaff deploys and drifts with wind Ship executes evasive maneuver to reduce broadside exposure to threat Missile hits chaff 22

23 ASM(AR) Demo 2 - Select Engagement Output Zoom 3D view Seduction Chaff rocket flight path Chaff deploy at set intervals, drifts with wind and descends at user-entered descent rate Ship path Missile approach path (Altimeter controlled) 23

24 ASM(AR) Demo 2 - Select Engagement Output Virtual Reality display shows missile at point of transition from Mid-Course phase to Terminal phase Ring icon indicates position of target ship 24

25 ASM(AR) Demo 2 - Select Engagement Output Virtual Reality display shows missile engaging seduction chaff at end game 25

26 ASM(AR) Demo 2 - Select Engagement Output Missile to Target Platform miss distance = 284 meters Probability of Kill = 0 % 26

27 ASM(AR) Demo 3 - Overall Description Missile is launched from a bearing of 30 degrees at a range of 9 kilometers in midcourse phase and enters terminal phase (simulation start) in search mode at a range of 8 kilometers descending to a cruise altitude of 4 meters Ship is heading due east and at a time of 1 second, executes a clockwise 3 degree per second turn Single Pulse Range Gate Pull-Off (RGPO) sequence is executed Single seduction chaff cloud is launched by firing a single chaff rocket The RGPO sequence pulls off the range gate resets and captures the range gate again before turning off at t = 6 seconds The missile searches and acquires the chaff, and strikes the chaff cloud Miss Distance is 229 meters; Ship Probability of Kill is 0% 27

28 ASM(AR) Demo 3 - Selected Jammer Parameters Jammer Menu access (see next page) 28

29 ASM(AR) Demo 3 - Selected Jammer Parameters Jammer Program Menu (Program Timing Table) Time field (off at t = 6 s) Jammer State field Range Technique field Range Technique Type (Set to Multiple Range Target (MRT) 1) Range Technique ID Menu access (see next page) 29

30 ASM(AR) Demo 3 - Selected Jammer Parameters Range Technique Menu MRT1 tab MRT Pulse 1 enabled RGPO motion parameters RGPO pulse parameters as set 30

31 ASM(AR) Demo 3 - Select Engagement Output Target Ship =Yellow Jamming = Magenta Chaff = dark blue Seeker Track Point=Red Single pulse RGPO jamming sequence starts Jamming power exceeds ship skin return seeker tracks jamming As RGPO pulls seeker range track gate off of ship, ship power drops off and J/S ratio jumps RGPO resets, seeker break lock occurs, seeker reacquires next RGPO jamming pulse Single seduction chaff cloud blooms - signatures exceeds ship skin return Jammer turns off, seeker break lock occurs, seeker acquires and tracks chaff cloud Missile seeker tracking chaff clouds in range, azimuth and elevation Missile hits chaff (see plots on following pages) 31

32 ASM(AR) Demo 3 - Select Engagement Output Target Ship =Yellow Jamming = Magenta Chaff = dark blue Seeker Track Point=Red This figure is an enlarged copy of the Missile Range Positions scope from previous page with the intention of adding additional range analysis detail Jammer turns on, single pulse RGPO jamming sequence starts RGPO acceleration phase RGPO constant velocity phase RGPO resets Seeker reacquires and tracks next RGPO sequence Jammer turns off Seeker acquires chaff cloud Seeker tracks chaff cloud until end game 32

33 ASM(AR) Demo 3 - Missile Range Position Target Ship =Yellow Jamming = Magenta Chaff = dark blue Seeker Track Point=Red This figure is a copy of the Missile Range Positions scope from previous pages (zoomed in on the region of the first RGPO reset and seeker range reacquisition (3.5 s < t < 5s ) for additional example range track analysis RGPO resets With no target above threshold to track, seeker remains in Track Mode for a time interval equal to a set percentage of user-entered Track Mode Memory Time before transition to Search Mode Seeker transitions to Search Mode Seeker searches in range Seeker encounters next RGPO, measures sufficient signal above threshold for M out of N detection, acquires and tracks RGPO 33

34 ASM(AR) Demo 3 - Select Engagement Output Missile hits Chaff 34

35 ASM(AR) Demo 3 - Select Engagement Output Virtual Reality display shows missile engaging seduction chaff at end game 35

36 ASM(AR) Demo 3 - Select Engagement Output Missile to Target Platform miss distance = 229 meters Probability of Kill = 0 % 36