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Table 1 Specifications for LIDAR onboard MMX

From: Light detection and ranging (LIDAR) laser altimeter for the Martian Moons Exploration (MMX) spacecraft

Size, weight, energy

 Size

300 × 300 × 360  mm3

Including hood

 Weight

 < 4.7 kg

Including tolerance

 Energy consumption

 < 15 W (nominal)

Excluding heater

Measurement

 Range

100 m–100 km

Assuming target albedo being 0.05

 Accuracy

 ± 2 m @ 100 m

 

 Frequency

 ± 22 m @ 100 km

4 Hz at maximum

Receiver

 FOV

1 mrad

Cassegrain-type telescope

Transmitter

 Laser energy

 > 20 mJ

Until the end of life

 Pulse divergence

 < 0.5 mrad

D4σ

 Pulse width

 < 10 ns (FWHM) < 25 ns (90% energy)

 

Energy measurement

 Accuracy

 < 10%

For each of receiver and transmitter when the energy of signal > 0.2 fJ