SITIS Archives - Topic Details
Program:  SBIR
Topic Num:  AF071-214 (AirForce)
Title:  Directing Monopulse Jamming Toward Antenna of Semiactive or Antiradiation Missile
Research & Technical Areas:  Sensors, Electronics

  Objective:  Direct an advanced monopulse electronic attack (EA) technique from an aircraft toward the antenna of a semiactive missile rather than the illuminating radar to increase the effectiveness of the countermeasures.
  Description:  An advanced monopulse electronic attack technique is being developed by the Air Force Research Laboratory to protect aircraft against monopulse target tracking radars. The technique presently is only effective against monostatic radars. This SBIR proposes to extend the applications of this technique to two types of passive radio frequency (RF) homing missiles: semiactive missiles, where the radar transmit antenna is not co-located with the missile antenna, and antiradiation missiles, which home on an emitter on the aircraft. Long-range semiactive surface to air missiles, air-to-air missiles, and air-to-air antiradiation missiles are proliferating and represent an increasing threat to large aircraft such as Airborne Warning and Control System, Joint Surveillance and Target Attack Radar System, and transport aircraft. These missiles employ monopulse antennas and receivers which are not vulnerable to existing EA techniques. The implementation of the monopulse EA technique will be accomplished by employing an electro-optical system on an aircraft to detect an inbound missile and to direct the technique toward the missile’s antenna. The electro-optical system and monopulse EA system would then operate in a coordinated fashion, with the electro-optical system assessing the effectiveness of the technique and providing feedback to the EA system, which would adjust the EA technique to increase the missile’s angle error. The electro-optical system will need a high degree of speed and accuracy when tracking missiles so that the monopulse countermeasures can be directed effectively. A high-speed processor will be required to perform the real time assessment and control function, and the interconnect between the electro-optical and EA systems will require a wide bandwidth.

  PHASE I: Investigate and analyze the angular accuracy and dynamic response required for the electro-optic system to respond to missile maneuvers so that advanced monopulse countermeasure system would be able to control the direction of the jamming with sufficient accuracy.
  
  PHASE II: Develop an electronic attack prototype system, including a scaled target which would simulate the electro-optical signature of a threat missile and would also include a monopulse antenna and receiver. A test plan and measures of effectiveness would be developed. Testing and evaluation of the system would be conducted.

  DUAL USE COMMERCIALIZATION: Military application: Protect aircraft, including large aircraft and Unmanned Aerial Vehicles from semiactive homing missiles and antiradiation missiles employing monopulse antennas and receivers. Commercial application: The advanced monopulse countermeasure could be used to protect commercial aircraft from semiactive homing missiles employing monopulse antennas and receivers.

  References:   1. Merrill Skolnik, Radar Handbook, McGraw-Hill Inc., New York, New York, 1990. 2. Leroy Van Brundt, Applied ECM, EW Engineering, Inc., Dun Loring, Virginia, 1978. 3. V. Ronda, W. Ser, M.H. Er, P. Chan; Emerging electro-optical technologies for defence applications; Proceedings of the SPIE - The International Society for Optical Engineering, v 3898, 1999, p 75-85 4. Anon, US Special Operations Command orders electro-optical systems; Jane's International Defense Review, n DEC., December, 2004 5. T. Joyner, K. Thiem, R. Robinson, B. Makar, B. Kinzly; Joint Navy and air force infrared sensor stimulator (IRSS) program installed systems test facilities (ISTFs); Proceedings of SPIE - The International Society for Optical Engineering, v 3697, 1999, p 11-22 6. M. Mailand, B. Daout; Universal sensor using electro-optic sensing principles; Ultra- Wideband Short-Pulse Electromagnetics 4 (IEEE Cat. No.98EX112), 14-19 June 1998, , Tel-Aviv, Israel 7. G. Thomson; Advances in electro-optic systems for targeting; Proceedings of the Institution of Mechanical Engineers, Part G (Journal of Aerospace Engineering), v 212, n G1, 1998, p 1-19 8. P. Gurfil; Robust guidance for electro-optical missiles; EEE Transactions on Aerospace and Electronic Systems, v 39, n 2, April 2003, p 450-61 9. F. Neele, R. Schleijpen; Electro-optical missile plume detection; Proceedings of SPIE - The International Society for Optical Engineering, v 5075, 2003, p 270-279 10. A. Zhang, H. Li, S. He, A. Wang; Study on electro-optic jamming of intermediate range TV guided missile weapon system; Binggong Xuebao/Acta Armamentarii, v 26, n 6, November, 2005, p 849-853

Keywords:  electronic attack, radio frequency, electro-optics, semiactive missile, Monopulse antenna, Monopulse countermeasures, antiradiation missile, target tracking, jamming waveform, technique assessment

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