SITIS Archives - Topic Details
Program:  SBIR
Topic Num:  A10-043 (Army)
Title:  Innovative Polarized Navigation Reference
Research & Technical Areas:  Air Platform, Sensors, Electronics

Acquisition Program:  
 The technology within this topic is restricted under the International Traffic in Arms Regulation (ITAR), which controls the export and import of defense-related material and services. Offerors must disclose any proposed use of foreign nationals, their country of origin, and what tasks each would accomplish in the statement of work in accordance with section 3.5.b.(7) of the solicitation.
  Objective:  The objective of this project is to develop an innovative adaptive polarized RF reference source for establishing a battlefield position and orientation referencing system. It has been shown that polarized RF sources can be used to establish position and orientation referencing systems over an entire battlefield. The referencing system can then be used by polarized RF sensors on guided munitions, UAVs, UGVs, all ground and airborne platforms and the soldier to determine its position and orientation relative to the established reference coordinate system and/or to initialize other position and orientation sensory devices such as inertia-based devices. The reference sources may be fixed (relative to the earth) or mobile. The proposed concept must be easy to deploy, must provide a reliable and secure reference source, and must be capable of being synchronized to form a position and orientation referencing system with built-in redundancy, be capable of covering a very large area, portions of which may not be in line-of-sight.
  Description:  It has been shown that polarized RF sources can be used to establish position and orientation referencing systems over an entire battlefield. The sources may be fixed or mobile, on the ground or in the air. The establishment of such a position and orientation referencing system is highly advantageous since they can enable smart munitions, weapon platforms, vehicles and warfighter to have a common accurate, reliable and secure position as well as orientation referencing system. Such a referencing system will also allow smart munitions and weapon platforms to be equipped with low volume, lightweight, low power, inherently hardened and relatively low-cost onboard position and orientation sensors that provide position and orientation relative to this referencing system. Such referencing systems have also the potential of being used by the command and control, forward observers, UAV, and warfighters alike. As a result, errors due to cross-referencing, loss of GPS signal, inherent errors in inertia devices and rate gyros, are significantly reduced and the effectiveness of munitions guidance and control systems will be greatly improved. The proposed sources must be relatively small and low power, rugged, and should be adaptive, i.e., be capable of being deployed very quickly without the need for calibration and/or adjustments. The proposals should address the issues of position and orientation measurement accuracy with the proposed referencing system, sensitivity, susceptibility to environmental noise and methods of reducing their effects, and in and out of line-of-sight issues. The RF frequencies of interest are in the 8-100 GHz range. The proposals must address issues related to reducing the probability of detection of the reference sources and methods of establishing an absolute referencing system.

  PHASE I: Develop innovative adaptive polarized RF sources to be used to establish full position and angular orientation referencing systems in the battlefield. The sources must adapt to a known plane of reference using simple and rugged mechanisms.
  PHASE II: Develop analytical models to simulate the performance of the proposed RF sources. Develop and fabricate a prototype of the proposed adaptive polarized RF source and demonstrate its performance and precision in controlled field tests.

  PHASE III: The development adaptive RF sources for full position and orientation referencing has a wide range of military, homeland security and commercial applications. In the military related areas, the developed position and orientation referencing system enable smart munitions, weapon platforms, vehicles and warfighter to have a common accurate, reliable and secure position as well as orientation referencing system. The referencing system can then be used for guidance and control of all smart munitions, missiles and guided bombs as well ground and airborne weapon platforms with minimal error due to the use of a single position and orientation referencing system. The developed position and orientation referencing system also has military, homeland security and commercial applications for guidance and control systems of various, robotic systems, particularly those used for remote operation in hazardous environments, which may be encountered in homeland defense, and for almost all mobile robotic applications used in the industry for materials handling and other similar applications. Commercial applications also include material handling equipment such as cranes; loading equipment, particularly in the sea; and industrial equipment used in assembly, welding, inspection, and other similar operations.

  References:  . Illuminated height PDF of a random rough surface and its impact on the forward propagation above oceans at grazing angles Bourlier, C.; Pinel, N.; Fabbro, V.; Antennas and Propagation, 2006. EuCAP 2006. First European Conference on 6-10 Nov. 2006 Page(s):1 - 6 2. Forward Propagation over Thick Oil Spills on Sea Surfaces for a Coastal Coherent Radar Pinel, N.; Bourlier, C.; Geoscience and Remote Sensing Symposium, 2008. IGARSS 2008. IEEE International Volume 4, 7-11 July 2008 Page(s):IV - 1125 - IV - 1128 3. A comparison of forward-boundary-integral and parabolic-wave-equation propagation models Rino, C.L.; Kruger, V.R.; Antennas and Propagation, IEEE Transactions on Volume 49, Issue 4, April 2001 Page(s):574 - 582 4. A New Combined Measurement Method of the Electromagnetic Propagation Resistivity Logging Xing, G.; Wang, H.; Ding, Z.; Geoscience and Remote Sensing Letters, IEEE Volume 5, Issue 3, July 2008 Page(s):430 - 432 5. Effects of the variability of atmospheric refractivity on propagation estimates Rogers, L.T.; Antennas and Propagation, IEEE Transactions on Volume 44, Issue 4, April 1996 Page(s):460 - 465 6. EM propagation in tunnels Delogne, P.; Antennas and Propagation, IEEE Transactions on Volume 39, Issue 3, March 1991 Page(s):401 - 406 7. Energy transport velocity of electromagnetic propagation in dispersive media Schulz-DuBois, E.O.; Proceedings of the IEEE Volume 57, Issue 10, Oct. 1969 Page(s):1748 - 1757 8. Hybrid empirical-neural approach in modeling EM propagation in urban environment with foliage areas Milovanovic, B.; Milijic, M.; Stankovic, Z.; Neural Network Applications in Electrical Engineering, 2008. NEUREL 2008. 9th Symposium on 25-27 Sept. 2008 Page(s):179 - 182 9. Line-of-sight EM propagation experiment at 10.25 GHz in the tropical ocean evaporation duct Kulessa, A.S.; Woods, G.S.; Piper, B.; Heron, M.L.; Microwaves, Antennas and Propagation, IEE Proceedings - Volume 145, Issue 1, Feb. 1998 Page(s):65 - 69 Coplanar Waveguide Circuits, Components, and Systems, Rainee N. Simons Book;2001; ISBN 0-4711-6121-7; Product No.: PC5948-TBR. A Coplanar Waveguide Bow-Tie Aperture Antenna,G. Zheng, A. Elsherbeni, C. Smith, University of Mississippi, USA. Synthesis of Irregular Waveguide Field Transformation Elements using a Multi-Resolution Algorithm, M.-C. Yang, K. Webb, Purdue University, USA. Modeling of Mode Excitation and Discontinuities in PBG Waveguides, F. Capolino, D. Jackson, D. Wilton, University of Houston, USA.

Keywords:  RF Sources, Polarized RF Sources, RF Sensors, Position and Orientation Referencing, Guided Munitions, Smart Munitions, Guidance and Control

Questions and Answers:
Q: 1: Is the emphasis on this topic to design and develop a source for an existing system of should the solution include the interface and (possibly) the design of the receiving units?

2: The source to be designed should cover the entire battlefield (as stated in the topic). Could we have a size estimation for "the entire battlefield"? And on a related note, is this in conflict with the "low power" requirement?

3: Are the "onboard position and orientation sensors" referred to in the topic existing or are to be provided as part of the solution?

4: Is it expected to have multiple sources for a given area or is multi source solution acceptable for the referrence system?
A: 1: Is the emphasis on this topic to design and develop a source for an existing system of should the solution include the interface and (possibly) the design of the receiving units?
Answer: The reference system discussed in the topic does not exist. The proposed referencing system should address both the interface and the receiving units (sensors) and must fall within the frequency and rate parameters detailed in the topic description.

2: The source to be designed should cover the entire battlefield (as stated in the topic). Could we have size estimation for "the entire battlefield"? And on a related note, is this in conflict with the "low power" requirement?
Answer: The proposed solution must be scalable to any size battlefield.

3: Are the "onboard position and orientation sensors" referred to in the topic existing or are to be provided as part of the solution?
Answer: These components must be a part of the proposer’s solution.

4: Is it expected to have multiple sources for a given area or is multi source solution acceptable for the reference system? A referencing concept (referencing munitions in the battlefield)
Answer: A multi-source solution is acceptable as long as it works together to meet the specifications and requirements detailed in the topic text.
Q: The solicitation states that GPS may not be used during operation of the source. Can the referencing source use GPS during calibration?
A: Answer updated by TPOC 6/21/10:
A: GPS must not be the primary reference for calibration. If GPS is unavailable, the system should be self-sufficient. We must be able to install the system without any reliance upon GPS.
Q: What are the positional and orientation acuracy requirements of the system?
A: Angular Orientation resolution better than 0.1 deg.
Position accuracy better than 5 m CEP at target.

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