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MPS‐LO Performance Requirements

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MPS‐LO Performance Requirements Chart Part 1

Parameter PORD Requirement Heritage Requirement MPS-LO Concept Design
Particle Energy Range 551,562 30 eV to 30 keV 30 eV to 30 keV 30 eV to 30 keV
Electron Flux Range
(cm2-s-ster-keV)-1		 115 1x104 E-1.3
to 0.75x109 E-1.3		 9x104 E-1.3
to 8x108 E -0.8		 0.1 x (9x104 E-1.3) to 1 x (8x108 E-0.8)
Ion Flux Range
(cm2-s-ster-keV)-1		 116 60 x (40 E-0.8) to
>1.1x107 E-0.8		 4.0 x 103 E-0.8 to
1.1x107 E-0.8		 1 x (4x103 E-0.8) to 25 x (1.1x107 E-0.8)
Energy Bands 559 19 15 15
Flux Accuracy 104 20% 25% 25%
YZ Viewing Angles 565 0° to 90° 0° to 170° 0° to 180°
YZ Angular Channels 564 6 5 12 (+2 Overlap)
XZ FOV (FWHM) 564, UIID51 4° Symmetric < 30° 5° Symmetric
Data Refresh Rate 110 1 sec 30 sec 1 sec
Data Latency 111 N/A < 5 sec < 5 sec
Energy Band Width 84 4% of band's central energy < 10% 7%
Energy Band Stability 586 <+3% <+3% <+3%

MPS‐LO Performance Requirements Chart part 2

Parameter Reference Requirement MPS-LO Design Concept
Size UIID47 12,384 cm3 MPS-LO CBE
Maximum Dimension UIID48 <=40 cm 31 cm (chassis)
31.6 cm (envelope w/MLI-CBE)
Power UIID36 5.5 W MPS-LO CBE
Mass UIID44 7.7 kg MPS-LO CBE
Data rate UIID27 11 kbps MPS-LO CBE
MPS-LO Modes PORD52
PORD59
PORD61
PORD90		 Safe Mode
Normal Mod
Diagnostic Mode
In Flight Calibration		 Safe Mode
Normal Mod
Diagnostic Mode
In Flight Calibration
Standby Mode