Systems for persistent surveillance

Abstract

The requirements for a persistent wide-area surveillance system are discussed in the context of evolving military operations. Significant emphasis has been placed on the development of new sensing technologies to meet the challenges posed by asymmetric threats. Within the UK, the Electro-Magnetic Remote Sensing Defence Technology Centre (EMRS DTC) has supported the research and development of new capabilities including radio-frequency (RF) and electro-optic (EO) systems, as well as work on sensor exploitation, with a goal of developing solutions for enhancing situational awareness. This activity has been supported by field trials to determine the efficacy of competing technologies in relation to realistic threat scenarios.

Pixel super resolution imaging technology based on phase wavefront modulation

“…High-quality images are finally obtained through reverse by recording the transmitted light intensity under different encoding masks on the focal plane decoding by recording the transmitted light intensity under different encoding masks on the focal plane. 12,13 However, they use a method of blocking the incident light to obtain different coding masks in these studies, which will cause a significant decrease in the system luminous flux, thus affecting the imaging quality. 14 In this work, to exceed the Nyquist sampling frequency and improve the pixel resolution, we propose a new phase wavefront modulation method that can change the point spread function(PSF) of the imaging system.…”