AI Article Synopsis
- A passive millimeter-wave (mmW) sensor designed to operate at 77 GHz has been developed, featuring a single pixel capable of raster scanning for imaging.
- The sensor utilizes optical upconversion to convert mmW signals into optical signals for detection, making it similar to components in distributed aperture systems.
- Performance analysis reveals a noise equivalent temperature difference of 0.5 K with a resolution of approximately 8 mrad, along with representative images that highlight the unique characteristics of the mmW spectrum.
Article Abstract
A passive millimeter-wave (mmW) sensor operating at a frequency of 77 GHz is built and characterized. The sensor is a single pixel sensor that raster scans to create an image. Optical upconversion is used to convert the incident mmW signal into an optical signal for detection. Components were picked to be representative of a single element in a distributed aperture system. The performance of the system is analyzed, and the noise equivalent temperature difference is found to be 0.5 K (for a 1 s integration time) with a diffraction limited resolution of ~8 mrad. Representative images are shown that demonstrate the phenomenology associated with this spectrum.
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| http://dx.doi.org/10.1364/AO.51.004157 | DOI Listing |
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