Background interference of impurity in strong water is the key factor restricting the detection distance and target characteristics of the weak target. Aiming at the problems of less echo characteristics and difficult identification of the characteristics of the underwater weak target laser detection, the paper studies the problem of the broadening of the laser echo pulse of the weak target under the background of strong water interference. A system of underwater weak target laser measurement and analysis is designed to suppress the near-field water scattering interference. The system can achieve matching adjustment among laser emission energy, laser beam angle and laser APD receiving gain. The detection performance of different underwater weak targets (small-scale metal, black rubber, low reflectivity reef, water grass, transparent plastic) was tested under different laser emission energy, different detection distance and different laser echo receiving gain. Through statistical analysis of data, the pulse width and material of the target of different underwater weak targets were obtained The relationship between the power of pulse laser, the distance between laser emission and target. The results show that the pulse broadening characteristics of the laser echo signal can be used to identify the weak target laser detection characteristics under the background of strong water impurity interference.
Laser technology is widely used in military, industrial manufacturing, electronics, holography, spectroscopy and other fields. The application of laser technology in military affairs has revolutionized the war. Military laser technology covers many aspects of military operations, such as reconnaissance warning, weapon guidance, high-power laser weapons, communication etc. This paper begins with the definition of laser, and briefly introduces the development history of laser in military application. Then the five main applications of laser in military are introduced. The current development situation is discussed and the shortcomings are analyzed. Finally, the paper summarizes and prospects the future development trend of laser in military.
Access to the requested content is limited to institutions that have purchased or subscribe to SPIE eBooks.
You are receiving this notice because your organization may not have SPIE eBooks access.*
*Shibboleth/Open Athens users─please
sign in
to access your institution's subscriptions.
To obtain this item, you may purchase the complete book in print or electronic format on
SPIE.org.
INSTITUTIONAL Select your institution to access the SPIE Digital Library.
PERSONAL Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.