LSMAG (Lunar Surface MAGnetometer) 

The Lunar Surface MAGnetometer (LSMAG) is being developed as one of the payload instruments for the Discovery Across Lunar Observations (DALO) project. DALO is a research and development initiative focused on the Moon, led by the Korea Astronomy and Space Science Institute (KASI). LSMAG's primary scientific purpose is to investigate the lunar south pole's magnetic environment. This investigation will enhance our understanding of lunar space weather in the termination region through time-varying magnetic field observations on the lunar surface.

Major Instrument Specifications

• Magnetometer: Three-axis fluxgate & AMR (with MEMS accelerometer)

• Size of MAG unit: 1270 × 220 × 152 mm (Stowed)

• Size of FCE unit: 150 × 135 × 82 mm 

• Boom length: 1 m

• Operational temperature of MAG unit: -55 °C ~ +70 °C

• Operational temperature of FCE unit: -20 °C ~ 50 °C

• Mass: < Total 8.5 kg

• Power: Input: +28 V (unregulated +24 – 32.8 V)

• Power Consumption: < 6 Watt

• Interface: RS-422, 115,200 bps

• Data generation: 342.77 Mbit/day (duty 100%)

Requirement Specifications of the Fluxgate Magnetometer

• • Core type: racetrack

  • Measuring range: ± 2000 nT

  • Resolution: < 0.2 nT at 10 Hz sampling rate (ground calibration)

  • Noise : < 50 pT / √Hz at 1 Hz

  • Linearity: < 0.005

  • Axis alignment: < 1 degree

  • Magnetic cleanness: < 10 nT at the primary magnetometer (MAG 1) located at the end of the boom (TBD)

Requirement Specifications of the HAMR unit

AMR (Three axis)

• • Model name: HMC 1001, HMC 1002

  • Measuring range: ± 80 uT

  • Resolution: < 20 nT at 10 Hz sampling rate (ground calibration)

  • Noise : < 5 nT / √Hz at 1 Hz

MEMS (Three axis)

• • Model name: ADXL355

  • Measuring range: ± 2000 nT

  • Resolution: < 1 mg at 10 Hz sampling rate (ground calibration)

  • Noise : < 400 ug / √Hz at 1 Hz

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