Performance of Surveillance Systems specially in terms of Detection and Recognitions completely dominated by environmental conditions as well as depends on number of parameters like range, target size, target type etc. Accordingly use of range gating technology seems inevitable. Fast Detection and Recognitions is playing a key role in today advance technological warfare scenario. As one with faster detection system will ultimately have an edge in decision and strategy making. Numerous experiments were going on in fields of Active range gating for optimizing transmitter in terms of Illuminator’s power, divergence, receiver’s gating for different environmental situations. As a result Range gating technology is maturing day by day. Although still for specific environmental scenario user has to manually adjust the Transmitters and Receivers performance parameters which is a somewhat trial and error type and time taking process. To outwit this redundancy, algorithm based Range gating system is presented which automatically suggests Transmitter power for specific scenario. Here algorithm based mathematical model of the range gating technology is simulated by using MATLAB as well as open source software Scilab.
Infrared systems operating in mid wave infrared band (MWIR) are using in a wide variety of coastal and border surveillance applications. This paper discloses about the need of triple FOV MWIR system for surveillance applications. Initial calculation to determine the first order parameters of Narrow FOV, Middle FOV and Wide FOV positions was discussed. Mechanical compensation approach along with the axial motion of lenses is used to obtain the triple FOVs. Configuration constraints are mentioned, limitations of substitute approaches explored, and characteristics of the chosen design are presented. Limited optical lenses in the optical module have an advantage to enhance the transmission of the system to achieve better ranges. To get better ranges the triple FOV systems is designed using only four lenses. Design of compact Triple FOV MWIR lens module demands at least four lens groups. To get the systems in compact form fit, for each group only one lens element has been used. This paper also discloses the optical performance analysis parameters aberrations curves and polychromatic modulation transfer function plots at all fields of views. The effect of lens performance by the rate of change of temperature in terms of various seasons was analyzed and active thermal compensation method was discussed. The design and experiment results indicate that image quality of the optical system is acceptable performance in all the fields of view and system should be applied in many civilian and military applications.
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.