Topic
Dynamic range
About: Dynamic range is a research topic. Over the lifetime, 7576 publications have been published within this topic receiving 101739 citations. The topic is also known as: DNR & DR.
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Patent•
30 Dec 1999TL;DR: In this paper, the reference voltage and gain of a differential amplifier and the integration interval are calibrated to provide an input to a differential analog to digital converter (ADC) that utilizes the full dynamic range of the ADC.
Abstract: Image enhancement is automatically achieved by calibrating the reference voltage and gain of a differential amplifier and the integration interval so as to provide an input to a differential analog to digital converter (ADC) that utilizes the full dynamic range of the ADC. When used with a CMOS array, the imaging logic can be fabricated on a single chip with the array using combinational logic for fast, inexpensive calibration. Another advantageous feature is the ability to expand a desired portion of the luminance spectrum of the image in order to increase the digital resolution of the resulting image for that portion of the spectrum of interest.
36 citations
TL;DR: In this paper, a high dynamic range readout system, consisting of a multi-dynode readout PMT and a VA32 chip, is presented, and an LED system is set up to calibrate the relative gains between the dynodes, and the ADC counts per MIPs from dynode 7 are determined under cosmic-ray calibration.
Abstract: A high dynamic range readout system, consisting of a multi-dynode readout PMT and a VA32 chip, is presented. An LED system is set up to calibrate the relative gains between the dynodes, and the ADC counts per MIPs from dynode 7 are determined under cosmic-ray calibration. A dynamic range from 0.5 MIPs to 1 x 10(5) MIPs is achieved.
36 citations
TL;DR: In this article, an optical fiber gyroscope configuration with dual-wavelength determination of the Sagnac shift is described, which provides a means of extending the unambiguous rotation sensing range and thus the dynamic range.
Abstract: An optical fibre gyroscope configuration which utilises dual-wavelength determination of the Sagnac shift is described. It is shown that this provides a means of extending the unambiguous rotation sensing range, and thus the dynamic range, of the gyroscope. Using an all-fibre system and sources at wavelengths of 812 nm and 842 nm, an increase in unambiguous sensing range of approximately 27 times is demonstrated.
36 citations
TL;DR: In this paper, the authors proposed all-optical analog-to-digital and digital-toanalog converters using cross-phase modulation in a nonlinear interferometer.
36 citations
TL;DR: In this paper, a multimode optoelectronic oscillator with integrated optical filter for detecting low-power radio-frequency (RF) signals is presented, which can selectively amplify RF signals from 1 to 6 GHz.
Abstract: We have assembled and characterized a multimode optoelectronic oscillator with integrated optical filter for detecting low-power radio-frequency (RF) signals. The system can selectively amplify RF signals from 1 to 6 GHz. The input signals can be as low as - 83 dBm with a compression dynamic range of 72 dB. Using an integrated silicon optical filter facilitates channelization of the amplified RF signal from 1 to 3 GHz by reducing the gain for signals above 3 GHz. Future system improvements are discussed.
36 citations