Accession Number : ADA568662


Title :   Roll Angle Estimation Using Thermopiles for a Flight Controlled Mortar


Descriptive Note : Rept. 18-23 Sep 2011


Corporate Author : ARMY RESEARCH LAB ABERDEEN PROVING GROUND MD WEAPONS AND MATERIALS RESEARCH DIRECTORATE


Personal Author(s) : Don, Michael ; Grzybowski, David ; Christian, IV, Richard


Full Text : https://apps.dtic.mil/dtic/tr/fulltext/u2/a568662.pdf


Report Date : Jun 2012


Pagination or Media Count : 20


Abstract : Although high cost guided missiles are a mature technology, low cost precision munitions is a new field with many technological challenges. One of these challenges is to find inexpensive sensors to replace expensive high-precision sensors that exist in traditional smart weapons. Thermopiles are low cost sensors that convert thermal energy into electrical energy. By using thermopiles to sense the difference in thermal energy between the ground and sky, the roll angle of a projectile can be determined. In July of 2011, the Army Research Labs conducted a flight test of an 81-mm Flight Controlled Mortar (FCMortar) equipped with four thermopile sensors. Roll angle was accurately estimated by processing the thermopile data with a Recursive Least Squares (RLS) filter implemented on a field programmable gate array (FPGA). These results demonstrate the feasibility of using thermopiles on precision munitions for real-time roll angle estimation.


Descriptors :   *MORTARS , *THERMOPILES , DETECTORS , FIELD PROGRAMMABLE GATE ARRAYS , FLIGHT TESTING(GUIDED MISSILES) , GUIDED MISSILES , LEAST SQUARES METHOD , REPRINTS , SMART WEAPONS


Subject Categories : Test Facilities, Equipment and Methods
      Guns


Distribution Statement : APPROVED FOR PUBLIC RELEASE