Other agencies (Air Force, Navy) could use the advantages of a PolyStrata-based millimeter-wave array in low-weight, high performance applications for autonomous landing and harbor guidance. The FSA would provide a substantially smaller payload for aircraft and heightened resolution in topography and velocity measurements. The millimeter-wave landing radar realized by the batch-level PolyStrata process can reduce costthereby making the autonomous landing radar a viable solution on many aircraft increasing long-term safety of craft and personnel. Harbor guidance for ships deals with the same weather and atmospheric-related issues. Additional applications include weather warnings and atmospheric research, especially where radar is mounted on aircraft or other vehicles to conduct surveys. The cost advantages would aid in the proliferation of radar at these frequencies. Since many of the current generation radars used for weather warning systems and meteorological forecasts are being updated with newer technologies (Heinselman, 2008), these microfabricated antenna array solutions could offer cost and size advantages.
Primary applications for the frequency scanned antenna array are to provide significant improvements over existing Ka-band radar used for planetary landing missions. Ka-band radar sensors are planned for the Mars Science Laboratory (MSL) mission scheduled for 2009/2010, but future missions are anticipated to employ radar at frequencies centered above 90GHz, such as G-band (Pollard et al., 2005). Antennas operating in this frequency range will reduce landing radar size and weight substantially while maintaining or improving the system performance for topographic and velocity data acquisition by providing greater resolution. Pollard and Sadowy (JPL under NASA contract), have outlined in detail their requirements for the G-band radar system needed for future MSL missions, including antenna specifications and phase shifting capabilities. We believe that missions after the MSL will be our first targeted application for the Nuvotronics G-band antenna solutions. Future NASA missions, especially those involving autonomous landing in rough terrain, would be the next target applications for the proposed antenna innovations. In addition, antenna arrays and feed networks operating at these frequencies would have applications in space-based radiometers such as those aboard the NASA AQUA earth-observing satellite.
More »