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Definition

Depth of Discharge

DOD

The percentage of a battery's capacity that has been discharged. Lower DOD per cycle means longer battery life. LEO designs often limit DOD to 25-30% to achieve thousands of cycles.

Related terms

Delta-VΔV

The change in velocity required for an orbital maneuver. A fundamental measure of the propulsive effort needed to transf...

Downlink

Data transmission from a spacecraft to a ground station. Downlink budget analysis determines if the signal is strong eno...

Free Space Path LossFSPL

The signal attenuation between an isotropic transmitter and isotropic receiver in free space, dependent on distance and ...

Doppler Shift

The change in observed frequency due to relative motion between transmitter and receiver. Critical for LEO ground statio...

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