WL/AAKR, Bldg. 7 2530 C Street Wright Patterson AFB, OH 45433-7607

A -- ADAPTIVE PROCESSING TECHNOLOGY INVESTIGATION. PART 1 OF 2. SOL PRDA 95-07-AAK DUE 051695 POC Dawn M. Ross, Contract Negotiator, 513-255-6908. A--INTRODUCTION: Wright Laboratory (WL/AAKR) is interested in receiving proposals (technical and cost) on the research effort described below. Proposals in response to this PRDA shall be submitted by 16 May 95, 1500 hours Daylight Savings time, to Wright Laboratory, Directorate of R&D Contracting, Building 7, Area B, 2530 C Street, ATTN: Dawn Ross, WL/AAKR, Wright-Patterson AFB OH 45433-7607. This is an unrestricted solicitation. Proposals submitted shall be in accordance with this announcement. Proposals receipt after the cutoff date and time specified herein shall be treated in accordance with restriction of FAR 52.215-10, copy of this provision may be obtained from the contracting point of contact. There will be no other solicitation issued in regard to this requirement. Offerors should be alert for any amendments that may change this PRDA or permit subsequent submission of proposal dates. Offerors should request a copy of the WL Guide entitled, ''PRDA and BAA Guide for Industry.'' This guide was specially designed to assist offerors in understanding the PRDA/BAA proposal process. Copies may be requested from the contracting officer cited in this announcement. B--REQUIREMENTS: (1) Technical Description: a) Background/Problem. Operational deficiencies exist in the ability of X-band air-to-air fire control radar to both detect and spatially locate (target acquisition) conventional and low observable (LO) fighter and cruise missile threats in difficult barrage noise jamming and/or ground clutter environments. Future USAF stealthy aircraft may utilize body fixed, electronically steered array (ESA), radar architectures to allow installation of the forward looking antenna with low radar cross-section (RCS). The array's low RCS installation may, however, degrade its radiation pattern and thereby increase the radar's susceptibility to jamming and clutter interference, b) Objective: Adaptive processing technology affords the potential of enabling fighter radar systems to acquire and track airborne targets in the anticipated counter LO (CLO) clutter and main beam and sidelobe jamming electronic counter measure (ECM) operational scenarios if certain crucial phenomenological issues can be resolved and solutions that have practical, cost-effective, radar architectural implementations can be formulated. Foremost among the many interference mitigation problems are: 1) suppression of pulse Doppler radar, all target aspect angle, medium pulse repetition frequency (PRF) mode directly competing sidelobe, and spread main beam ground clutter, and 2) the susceptibility of the narrow bandwidth high and medium PRF acquisition and track and wide bandwidth air-to-air target recognition high range resolution (HRR) mode waveforms to both main beam escort and sidelobe standoff jammers. The crucial phenomenologies greatly exacerbating interference suppression are radome multipath internal reflections (RMR) and radar antenna main beam ground footprint incident terrain scattered jamming interference (TSI). Recent WL/AARM sponsored research efforts have quantified the target signal-to-thermal noise ratio degradations due to ground clutter and ECM interference in the presence of the RMR and TSI phenomenologies and formulated various adaptive processing radar architectures that appear conceptually capable of canceling the undesired interference. The objective of this effort is to continue the evolution of the various adaptive technologies for interference cancellation, such as, adaptive main beam canceller (AMBC), adaptive sidelobe canceller (ASLC) jammer, space-time adaptive processing (STAP) joint jammer and clutter cancellation, and RMR and TSI cancellation. The objective of this effort also includes the demonstration of the mitigation capabilities of the aforementioned adaptive technologies corresponding to their practical implementation in both contemporary and future USAF fighter CLO weapon systems operating in search, target acquisition, track and non-cooperative target recognition (NCTR) modes, c) Approach: The contractor shall identify and investigate one or more high military utility AMBC, ASLC, STAP, RMR, or TSI (including terrain bounce relevant to degradations in air-to-air missile launch and its mid-course guidance/trajectory shaping) interference mitigation solutions to the high (PRF), medium PRF, and/or NCTR air-to-air radar modes. The adaptive processing techniques used shall enable both target detection and its accurate spatial location. The adaptive processing technologies/algorithms must have associated air-to-air radar architectures and hardware/software implementations of limited complexities such that they are realistic candidates for both antenna range and flight test data collection/ground processing concept validation experiments. Early and late adaptive processing technology investigation (APTI) program flight test experiments are to be conducted for exploring near-term contemporary fighter radar upgrades and the merits of the far-term adaptive processing radar architectures, respectively. The near-term contemporary fighter radar upgrade flight experiments will address the RMR, TSI, and other phenomenological issues and the interference suppression level possible in the context of four beam monopulse antenna/four receiver channel architectures. The far-term radar experiments will address the capability of a multiplicity of adaptive processing beam and sub-array spatial pulse repetition frequency (PRI) and tap delay line (TAP) temporal, and Doppler degrees-of-freedom (DOF) to restore radar performance to its ideal thermal noise limit. High fidelity environmental/tactical scenario and sophisticated digital computer radar simulations are to be utilized to develop and/or extend the adaptive processing techniques and predict the performance of the evolving algorithms prior to conduct of the flight and/or ground experiments. (2) Deliverable Items: The following deliverable items shall be required: (a) Status Report, DI-A-MGMT-81368/T, monthly, (b) Project Planning Chart, DI-MGMT-80507A/T, monthly, (c) Contract Funds Status (CFSR), DI-F-6004B/T, quarterly, (d) Scientific and Technical Reports, Contractor's Billing Voucher DI-MISC-30593/T, monthly, (e) Scientific and Technical Reports, DI-MISC-80711/T (Draft and Reproducible Final), including as a minimum the rationale, objective, assumptions, analytic methods/models, algorithms (including mathematical representation), and procedures supporting the radar adaptive processing architectures/techniques design, (f) Presentation Material, DI-81373/T, the contractor shall be required to give a kick-off meeting at the contractor's facility within forty-five (45) days after contract award, and informal technical meetings held quarterly alternating between WPAFB and the Contractor's facility, (g) Program Plan, DI-MGMT-80909/T, (h) Conference Minutes, DI- ADMN-81250A/T, (i) Conference Agenda, DI-ADMN-81249A/T, (j) Contract Status Schedule Report (CSSR) DI-F-6010A/T, (k) Contract Work Breakdown Schedule (CWBS) DI-MGMT-81334, (l) All simulations and software that may be developed by the contractor in support of this effort will be deliverables under this program (in contractor's format), (l) Flight as well as ground collected data, and ground processed data, to support this effort, will be deliverables (in contractors' format) under this program also. (3) Security Requirements: TEMPEST requirements will apply. Generation of classified material for this effort will be authorized only on equipment approved for classified processing by Air Force TEMPEST authorities. (4) Other Special Requirements: International in Arms Regulations apply. End of Part 1. (0089)

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