In order to counter amplitude modulation detection technology, people invented the stealth technology. With the emergence of some new material, as well as stealth technology continues to improve and refine, the traditional AM detection technology will soon exit the stage of history in certain application areas. The stimulated Brillouin scattering detection technology as a non-contact FM detection technology, has excellent anti-stealth features and anti-jamming capability, and no damage to the detection of s...