This paper reviews the development of in-orbit radiometric calibration methods in the past 40 years. It summarizes the development of in-orbit radiometric calibration technology of typical satellite sensors in the visible/near-infrared bands and the thermal infrared band. Focuses on the visible/near-infrared bands radiometric calibration method including: Lamp calibration and solar radiationbas...

A new SAR radiometric terrain correction method was proposed to reduce the terrain effects in sloped regions. Based on this method, a procedure for polarimetric SAR terrain effect reduction was proposed, including geometric correction, shadow detection, radiometric terrain correction, and polarization orientation angle shift compensation. Experiments using RADARSAT-2 polarimetric SAR data of th...

According to 5-Myr-old fossil evidence, ground squirrels within the genus Spermophilus had diverged into subgenera Spermophilus and Otospermophilus by late Miocene times. Radiometric dating has also provided a precise time for the sudden onset of a geological event, occurring 0.725 Myr ago, that initiated the complete and permanent reproductive isolation of two subspecies within the subgenus Ot...

This set of papers arose from a Discussion Meeting held in the Department of Geology & Applied Geology, University of Glasgow, on 9–10 September 1997. The aim of the Meeting was to review the progress which had been made in resolving some of the more controversial aspects of the pre-Silurian Caledonide geology of the British Isles and Scandinavia. It was also held to mark the retirements of two...

The predicted prevalence of false positive blood cultures due to hyperactive neonatal blood cells in a radiometric detection system was confirmed. Suppression of this blood background radioactivity in the system was achieved by using a hypertonic medium containing 10% sucrose. The radiometric system produced accurate results as fast as the conventional blood culturing method, saved labor and mi...

Microwave radiometric method is discussed as applied to monitoring of rice growth. The following questions are considered in the paper. Modeling of microwave emission from rice fields. Experimental studies of microwave emission from rice fields. Rice biomass retrieval from microwave radiometric measurements. Examples of monitoring of rice growth with airborne and ground based radiometers.

Radiometric cross-calibration between the Advanced Spaceborne Thermal Emission and Reflection Radiometer (ASTER) and the Terra-Moderate Resolution Imaging Spectroradiometer (MODIS) has been partially used to derive the ASTER radiometric calibration coefficient (RCC) curve as a function of date on visible to near-infrared bands. However, cross-calibration is not sufficiently accurate, since the ...

As the result of a comparative study, it was found that a radiometric method utilizing an aerobic and an anaerobic vial was much more efficient than a tubed broth method in detecting bacteremia. The radiometric method detected 97 ( 92.4 percent) of 105 isolants as compared to 58 ( 55.2 percent) for the tubed broth method. Forty-seven (44.8 percent) of the isolants were detected only by the form...

Radiometric identification is a recently coined term that describes a broad category of techniques for determining the identity of a wireless device based on unique characteristics of its transmitted signal that result from imperfections and variances in the device’s manufacturing processes. Existing techniques are based on extracting and classifying features from either the transient portion o...

To determine the need for blind subculturing of BACTEC (Johnston Laboratories, Cockeysville, Md.) blood culture media, we compared results of radiometric readings, visual inspection, and blind subculturing for nearly 7,500 blood specimens. Visual inspection and radiometric testing were performed on day 1 through 7, and blind subcultures were made on day 3. In the first phase of the study, 402 o...