Boost Phase Plume-to-Hardbody Handover

Award Information
Agency: Department of Defense
Branch: Missile Defense Agency
Contract: W9113M-04-P-0125
Agency Tracking Number: B041-010-0524
Amount: $84,567.00
Phase: Phase I
Program: SBIR
Awards Year: 2004
Solicitation Year: 2004
Solicitation Topic Code: MDA04-010
Solicitation Number: 2004.1
Small Business Information
100 Wall Street, Princeton, NJ, 08540
DUNS: 096845169
HUBZone Owned: N
Woman Owned: N
Socially and Economically Disadvantaged: N
Principal Investigator
 James Lisowski
 President/Sr. Scientist
 (609) 921-3892
Business Contact
 Jean Marinari
Title: CFO
Phone: (609) 921-3892
Research Institution
Several plume-hardbody handover algorithms under development by various investigators show promise in simulations for locating the missile body when the body is resolved or approximately the size of a pixel. Several scenarios involving liquid propellant missiles, such as the cases where these threats are observed at moderate to long ranges, and are at near nose-on geometries or large angles of attack, provide challenges to these handover algorithm and corresponding single- or dual-wavelength infrared detector concepts, however. These stressing conditions are challenging to space and air based systems that are employed to provide accurate metrics for reconstruction of threat trajectories or to provide position information for mid-course intercept, especially considering the preferred use in these systems of wavebands optimized for plume detection. In the enhancement plume flight regime (typically 70-200 km altitude for ICBM class missiles), plume radiance patterns exhibit a characteristic parabolic shape. This parabola is maintained even at large angles of attack. In some cases, the windward side may be significantly brighter than the leeward side and may present a "bright spot" that competes with the localized "vacuum core" signature, which is often used as an aim-point for the handover algorithms. Therefore, fitting the radiance pattern to this characteristic parabola provides a means for determining the plume axis, which then allows for more robust aim-point estimation. Relatively straightforward interpretation of the radiance patterns, possibly augmented with off-board information or information gained from multiple frames of data, allows for the determination of whether the threat is observed at near nose-on aspect angles or high angles of attack and the subsequent selection of the correct "bright point " that includes the missile body. Additionally, the parabola contains information that may be exploited to reveal characteristics of the propulsion system for identification of the upper stage missile system.

* information listed above is at the time of submission.

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