MODIFICATION
A -- Defense Sciences Research and Technology
- Notice Date
- 2/4/2003
- Notice Type
- Modification
- Contracting Office
- Other Defense Agencies, Defense Advanced Research Projects Agency, Contracts Management Office, 3701 North Fairfax Drive, Arlington, VA, 22203-1714
- ZIP Code
- 22203-1714
- Solicitation Number
- BAA03-02
- Response Due
- 11/7/2003
- Archive Date
- 11/8/2003
- Point of Contact
- Steven Wax, Deputy Director, Defense Sciences Office, Phone 703-696-2281, Fax 571-218-4553,
- E-Mail Address
-
none
- Description
- TIME REVERSAL METHODS, SOL BAA 03-02, Addendum 3, DUE 051403, POC: DR. CAREY SCHWARTZ, DARPA/DSO, Fax: 571-218-4553, E-mail: baa03-02@darpa.mil, URL: www.darpa.mil/baa/#dso. The Defense Sciences Office is interested in new research for TIME REVERSAL METHODS. This new program represents a thrust area for DSO that will comprise a multi-disciplinary, multi-pronged approach with far reaching impact. Time Reversal Methods: Active and passive sensor systems often receive signals that include contributions derived from multipath scattering effects. Systems effected by multipath include, for example, active acoustic, sonar, LADAR, and radar modalities including synthetic aperture, inverse synthetic aperture, and over the horizon. Further the ability to obtain imagery through foliage and other types of clutter impacts the ability to detect and recognize targets. Conventional approaches to obtaining imagery in the presence of clutter rely on utilization of wavelengths larger than the scale of the clutter resulting in a spatial resolution that is limited by the long wavelength probe or special timing schemes. The presence of multipath scattering also strongly affects wireless and acoustic communication systems resulting in suboptimal bandwidth utilization and limited communication capacity as suggested by current research in the area of Multiple Input Multiple Output systems. Time reversal methods are mathematical approaches to the inverse problem that seek to exploit the presence of multiple scattering that show promise for estimation of channels and the presence of objects within the channel. Time reversal methods are based in part on the concept of employing a single source and multiple receivers. A portion of the signal recorded at each receiver is then time reversed, i.e., last in first out, and used to estimate the propagation channel for either communication or imaging. The predominance of ongoing work in time reversal methods has been directed towards acoustic point targets in low dimensions. DARPA is interested in creating new technologies for exploiting the presence of multiple scattering in order to obtain high resolution imagery, enhanced communication bandwidth, and potentially covert communication channels. We would like to invite white papers that are far reaching in their implications, innovative, and ambitious in their goals and implementation. We encourage the submission of white papers and proposals that address one or more of the following areas: (1) Extension of time reversal methods from the acoustic to electromagnetic domain including the ability to treat three spatial and one temporal dimension, extended targets, and the effects of polarization in a wide variety of multipath environments including the presence of a spatially variable dielectric response. This will require the creation and exploitation of new models, either statistical or deterministic, of the environment, electromagnetic simulations for the environment, and potentially experiments that validate the models and provide parameters for the models. (2) Extension of time reversal methods as applied to acoustics to include the ability to treat three spatial and one temporal dimension as well as extended targets in a wide variety of acoustic environments including the presence of a spatially varying speed of sound. This will require the creation and exploitation of new models, either statistical or deterministic, of the environment, electromagnetic simulations for the environment, and potentially experiments that validate the model and provide needed parameters for the models. (3) Determination and quantification of the relationship between the amount of multipath and the maximal resolution of a target for the wavelength employed. System studies that suggest how to modify existing sensors in light of the desired spatial resolution of the target, degree of multipath scattering, and detector noise, as well as suggesting collection strategies are further encouraged. (4) Efforts that lead to an understanding of the portion of the received signal that should be sampled, sampling rates, the number of sensors that should be deployed, and the effects of the geometrical arrangement, and their effect on the theoretical resolution that can be obtained in the image. (5) Strategies for exploiting existing and planned data collections from existing physical and synthetic electromagnetic (acoustic) sparse arrays; as well as LADAR systems to form images of targets in clutter using time reversal methods and comparisons of the utility of these images to images formed by conventional methods for automatic target cueing, identification, and recognition. White papers whose focus is on automatic target cueing, identification, and recognition are strongly discouraged. (6) New sensor concepts that exploit multipath that are capable of super resolution in the acoustic, sonar, or electromagnetic domains that support automatic target cueing, identification, and recognition. (7) Mathematical analysis and demonstrations of time reversal methods to communication systems focusing on the characterization of the multipath, the maximum available bandwidth that is supported, methods for determining the number of transmitters required to provide spatial localization at the position of the receiver. White papers addressing electromagnetic and acoustic communications are desired. White papers may include any combinations of the above areas. White papers with an emphasis on the development of mathematics and algorithms that enable time reversal methods coupled to simulations or experiments are preferred to white papers that focus on the design of sensors or data collection efforts as well as automatic target cueing, recognition, and identification. We encourage the formation of interdisciplinary teams integrated toward solutions to these challenging problems. It is essential that the preparation of white papers include the following areas: (1) A clear statement of the envisioned utility of the proposed research and development. We are looking for revolutionary applications and goals that could be enabled if the proposed work is completed successfully. While distinct goals for the execution of the proposal are required, the vision presented may extend past the performance period. (2) A concise statement of the research challenges, approach, and potential anticipated solutions to the challenges that will be addressed. This should include explicit timelines for which progress toward the goals can be determined and measured. Intermediate milestones of approximately an 18 month-period with demonstrable metrics of performance must be included for the proposed work. (3) A cost estimation for resources required for the proposed timeline. This should include a clear description of the human resources needed as well as funding. A management plan that describes how the different disciplines represented on the team will be integrated is critical. (4) The white paper should consider phases of development as the challenges are met. The first phase of the program could include theoretical analysis demonstrating the efficacy of obtaining images by exploiting time reversal methods coupled to a demonstration based upon synthetic or real data that includes characterization of the environment. White papers must be received by 1600 EDT March 14, 2003. Please put the phrase TIME REVERSAL METHODS in the title of the white paper. If the authors of white papers choose not to submit electronically, U.S. mail may be used. White papers will not be accepted by way of facsimile transmissions. Authors of white papers will be notified by April 14, 2003, if a full proposal will be requested. Full proposals must be submitted no later than 1600 EDT May 14, 2003. We expect to initiate new proposals expeditiously upon peer review. To facilitate the submission of white papers, a website http://www.sainc.com/dso/ has been set up. For more detailed instructions on submitting white papers, please refer to the instructions for BAA03-02 found at the website http://www.darpa.mil/baa/#dso/. Not withstanding the disposition of white papers, DARPA will accept full proposals for this addendum. PROPOSAL REQUIREMENTS: Each proposal should: 1) explicitly address tests, demonstrations, and other research activities planned in the area(s) of interest described above, 2) include at least two specific and quantitative 18-month scientific and/or technical objectives for each scientific/technical area of interest addressed in the proposal that clearly demonstrate the research is on track for meeting the ultimate program goals, 3) include clearly delineated intellectual property arrangements and transition paths, and 4) include identification and assessment of critical scientific and/or technical barriers to the program objective and plausible approaches to develop solutions or overcome their limiting effects. Upon award, specific deliverables and appropriate level demonstrations of the science and/or technology elements will be required periodically, and a final demonstration of the deliverable system is required at the end of the program. Proposed Phase 1 efforts should not exceed 18 months, but consideration should be given to possible continuation of the effort into Phase 2. If multiple awards are made, down-selection may occur annually based on technical progress and achievements. Proposals with cost share should clearly identify the specific tasks to be cost shared in the technical proposal and separately break out the corresponding costs in the cost proposal. The number of awards will be dependent on the suitability of proposals received and availability of funds. Full proposals shall consist of two volumes: technical and cost. The technical and cost volumes shall conform to the guidelines in DARPA (DSO) BAA 03-02 of December 16, 2002. To receive consideration under this addendum PROPOSALS ARE DUE NO LATER THAN 1600 EDT MAY 14, 2003, to the address shown below. Proposals received after that date will be considered under the open BAA but not this addendum. In addition to the required original and 5 copies of the proposal, proposers are required to submit an electronic copy of the proposal on a ZIP disk. EVALUATION OF PROPOSALS: Evaluation of the proposals will be in accordance with BAA03-02. For general administrative questions, please refer to the original CBD announcement, BAA 03-02 of December 16, 2002. GENERAL INFORMATION: In all correspondence, reference BAA03-02, Addendum 3. TECHNICAL POINT OF CONTACT: Dr. Carey Schwartz, DARPA/DSO; Phone: (571) 218-4536; Fax: (571) 218-4553.
- Record
- SN00253078-W 20030206/030204213733 (fbodaily.com)
- Source
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