Mathematical Absorber Reflection Suppression (MARS) for ...
Mathematical Absorber Reflection Suppression (MARS) for ... Mathematical Absorber Reflection Suppression (MARS) for ...
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
<strong>MARS</strong> Processing• <strong>MARS</strong> uses the standard NIST Spherical Near-field to Far-FieldTrans<strong>for</strong>mation 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 <strong>MARS</strong> technique applies a mathematical position shift to theAUT measured data during processing to optimize the way thespherical trans<strong>for</strong>m filtering is done.13
Change language