| 摘要 |
<p>An apparatus, system(100), and method(214) for detecting chemicals utilizes a mechanism for dividing light from a target volume into different frequency bands and directing these bands onto a pixel array. The entire pixel array is then read out at essentially the same time. Dividing and applying the ranges of frequencies to the pixels in this way facilitates decoupling(302) spectral information from the data signals and determining a spectral range signature without aliasing. Analysis of the spectral range signature and other spectral information including comparison to a database enables identification of chemical(s)(306) in a target volume. The system(100) and apparatus may include a chemical detector(108) having a light collector, a diffraction grating, a focal plane array of pixels, and a controller. A light generator and a high frequency microphone for receiving a photoacoustic response may be utilized to determine a location of a material in the target volume.</p> |
