The temporal resolution of a LADAR system is primarily decided by the pulse duration of the laser source, response time
of the detector and the resolution of the processing electronics. A combination of the timing jitter associated with these
components can deteriorate the system performance by reducing the range resolution of the complete system. The range
information in a LADAR system is obtained by measuring the time-of-flight using an electronic time-to-amplitude
converter or a multi-channel analyzer. In this paper, we discuss a multi-pulse detection scheme which can be utilized to
improve the range resolution of a LADAR system, and allow us to determine the target range with higher accuracy. We
present results showing improvement by a factor of three in the range resolution of the scanning LADAR system using
this scheme in our laboratory.
In this paper, we discuss the development and operation of a scanning LADAR system. This system currently generates intensity and range images of a target with high spatial resolution located at a distance 5–10 m away from the sensor. The scanning LADAR system is designed with a purpose to generate polarization images of the target by integrating an in-line Stokes polarimeter in the receiver arm of the system. In this context, we have also discussed the basic design of the polarimeter using a liquid crystal retarder, and characterized the performance of the polarimeter for determining the polarization state of reflected light in the LADAR receiver.