  For the first time, the hybrid Frequency Division Multiple Access (FDMA) Code
Division Multiple Access (CDMA) mode of the CAOS (i.e., Coded Access Optical
Sensor) camera is demonstrated. The FDMA CDMA mode is a time frequency double
signal encoding design for robust and faster linear High Dynamic Range (HDR)
image irradiance extraction. Specifically, it simultaneously combines the
strength of the FDMA-mode linear HDR Fast Fourier Transform (FFT) Digital
Signal Processing (DSP) based spectrum analysis with the CDMA mode provided
many simultaneous CAOS pixels high Signal to Noise Ratio (SNR) photo-detection.
The FDMA CDMA mode with P FDMA channels provides a faster camera operation
versus the linear HDR Frequency Modulation (FM) CDMA mode. Visible band imaging
experiments using a Digital Micromirror Device (DMD) based CAOS camera
demonstrate a P equal to 4 channels FDMA CDMA mode high quality image recovery
of a calibrated 64 dB 6 patches HDR target versus the CDMA and FM CDMA CAOS
modes that limit dynamic range and speed, respectively. Simultaneous dual image
capture capability of the FDMA-CDMA mode is also demonstrated for the first
time in Ultraviolet (UV) to Near Infrared (NIR) 350 to 1800 nm full spectrum
using Silicon (Si) and Germanium (Ge) point photo-detectors.
