Mathematical Absorber Reflection Suppression (MARS) for ...

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Redundant dataComparison Method Description+ =Best Estimate of“Truth Model”Best Estimate of“Truth Model” - =Chamber ReflectionsBest Estimate of- + = “Truth Model”Chamber Reflectionswith MARS12
MARS Processing• MARS uses the standard NIST Spherical Near-field to Far-FieldTransformation Algorithm• NIST algorithm uses a mode filtering technique• Mode cutoff is based on the fact that modes above a certainindex number are exponentially attenuated and not detected bythe probe.• Mode cutoff is determined by the physical dimensions of the AUT• NSI‟s MARS technique applies a mathematical position shift to theAUT measured data during processing to optimize the way thespherical transform filtering is done.13
Page 1 and 2: Mathematical Absorber Reflection Su
Page 3 and 4: NSI‟s New SNF Chamber• NSI-700S
Page 5 and 6: Amplitude (dB)Plot Subtraction Expl
Page 7 and 8: Simple Chamber Reflection Test• T
Page 9 and 10: Typical AUT Offset Test ResultWR Si
Page 11: 360 phi vs. 180 phi SNF ScanningAUT
Page 15 and 16: Key MARS Requirements• Over sampl
Page 17 and 18: dBError Level & Improvement for DLP
Page 19 and 20: dBError Level Improvement for WR-28
Page 21 and 22: Amplitude (dB)Amplitude (dB)Open La
Page 23 and 24: Open Lab Test Results - WR-1500 SGH
Page 25 and 26: MARS Improvement SummaryAntenna Ave

Mathematical Absorber Reflection Suppression (MARS) for ...

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