English to Spanish Tech/Engineering Military / Defense

The system advantageously incorporates features to ensure that it will not mistake non-ballistic signals, such as vehicle noise, vibration, wind-noise and EMI, for a shooter. For example, the sensor mast can be mounted to a vehicle (not shown) with elastomeric sleeves in mating joints to prevent rattling. The sensors can be attached to the ends of the spines with elastomeric couplings, having low-frequency resonances at about 1 Hz to isolate them from spine vibration. Sensor spines can be attached to a common hub that contains analog electronics, which can also be attached to the
sensor mast with elastomeric shock mounts to isolate it from mast vibrations.

The term "spine" appears three times as "the end of the spines..." and "spine vibration" and "sensor spines". I cannot tell what it refers to. Does anyone have an idea? Thank you!

The document refers to a system for identifying a muzzle blast, for determining shooter locations.