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REPORT DOCUMENTATION PAGEForm Public reporting burden for this collection of information is estimated to average 1 hour per response, including the time for reviewing instructions, searching existing data sources, gathering and maintaining the data needed, and completing and reviewing this collection of information. Send comments regarding this burden estimate or any other aspect of this collection of information, including suggestions for reducing this burden to Department of Defense, Washington Headquarters Services, Directorate for Information Operations and Reports (0704-0188), 1215 Jefferson Davis Highway, Suite 1204, Arlington, VA 22202-4302. Respondents should be aware that notwithstanding any other provision of law, no person shall be subject to any penalty for failing to comply with a collection of information if it does not display a currently valid OMB control number. PLEASE DO NOT RETURN YOUR FORM TO THE ABOVE ADDRESS. REPORT DATE (DD-MM-YYYY) 25-02-2015 REPORT TYPE Technical Paper DATES COVERED (From -To PERFORMING ORGANIZATION NAME(S) AND ADDRESS(ES)Morgan State University (INC) 1700 E Cold Spring LN, Baltimore MD 21251-0002 PERFORMING ORGANIZATION REPORT NUMBER412TW-PA-14317 SPONSORING / MONITORING AGENCY NAME(S) AND ADDRESS(ES)Test Resource Management Center Test and Evaluation/ Science and Technology 4800 Mark Center Drive, Suite 07J22, Alexandria, VA 22350 SPONSOR/MONITOR'S ACRONYM(S)N/A SPONSOR/MONITOR'S REPORT NUMBER(S) SET 2015-0022 DISTRIBUTION / AVAILABILITY STATEMENTApproved for public release A: distribution is unlimited. SUPPLEMENTARY NOTESCA: Air Force Flight Test Center Edwards AFB CA CC: 012100 ABSTRACTThis paper shows the optimized Link Dependent Adaptive Radio (LDAR) using the variable QAM OFDM modulation size which adapts to channel conditions. The LDAR enhanced performance is illustrated by use of a flight path simulation with associated channel dynamics. These channel dynamics along the flight path and its effects on the radio link parameters are also discussed. SUBJECT TERMS ABSTRACTThis paper shows the optimized Link Dependent Adaptive Radio (LDAR) using the variable QAM OFDM modulation size which adapts to channel conditions. The LDAR enhanced performance is illustrated by use of a flight path simulation with associated channel dynamics. These channel dynamics along the flight path and its effects on the radio link parameters are also discussed.

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This paper proposes a new approach for tool tip error estimation for reconfigurable machine tools by linearly adding the module errors represented by a screw in global coordinate. The presented method is ideal for modular structured reconfigurable machine tools since the errors are represented in modules’ coordinate system in coordinate independent screw representation method. The contribution of each error sources is then estimated by linear combination (AKA parallel combination) after the error screws are transformed into the global coordinate system of the machine tools. The presented method is verified through the comparison with the serial matrix multiplication method proposed by Moon et al. [3] Simulations for the above mentioned methods are run and total tool tip errors are compared to study the feasibility of parallel method. The study shows the errors are smaller for parallel combination and both methods have similar trends over the work volume.