Impulse signature
An impulse signature is a dectectable energy phenomenon produced by impulse-powered vessels.

In 2370, the Maquis utilized an implosive protomatter device to destroy the Bok'Nor, a Cardassian vessel, having matched the device to the ship's impulse signature to avoid detection. ()

In 2372, the crew of the  detected an impulse signature in the Badlands, signalling the arrival of a Maquis raider which had come to rendezvous with the , which the Defiant crew had been following under cloak. ()

In 2375, while searching for the missing , the crew of the  was able to detect the Flyers impulse signature in the upper atmosphere of a planet on which the shuttle had crashed. ()

Later that year, the crew of Voyager, who were attempting to transport a group of telepathic refugees to a wormhole in the Tehara system, eluded detection by the scanning pulse of a Devore sensor array designed to dectect warp fields and impulse signatures, by lowering the ship's power output to beneath the array's detection threshold. ()

See also
Warp signature

Propulsion technology