Results 221 to 230 of about 57,099 (266)
Some of the next articles are maybe not open access.
OCEANS '85 - Ocean Engineering and the Environment, 1985
The performance of marine radar for ice detection is investigated using iceberg observational data collected during three years of offshore drilling in the Labrador Sea region. One thousand "first sightings" of icebergs during drilling operations revealed a maximum range of detection of 87km, with the median value being 27.8km.
J. Miller, K. Satterfield
openaire +1 more source
The performance of marine radar for ice detection is investigated using iceberg observational data collected during three years of offshore drilling in the Labrador Sea region. One thousand "first sightings" of icebergs during drilling operations revealed a maximum range of detection of 87km, with the median value being 27.8km.
J. Miller, K. Satterfield
openaire +1 more source
IEEE Transactions on Aerospace and Electronic Systems, 2005
Clutter is defined as any unwanted radar return. The presence of clutter in a range/Doppler cell complicates the detection of a target return signal in that cell. In order to quantify the effect of clutter on the probability of detection, we must first specify sets of models suitable for representing the clutter and target. The simplest and most common
openaire +1 more source
Clutter is defined as any unwanted radar return. The presence of clutter in a range/Doppler cell complicates the detection of a target return signal in that cell. In order to quantify the effect of clutter on the probability of detection, we must first specify sets of models suitable for representing the clutter and target. The simplest and most common
openaire +1 more source
Eos, Transactions American Geophysical Union, 1947
Radar photographs of thunderstorms and the Florida hurricane of September 1945 were shown to illustrate structure of those storms (see Fig. 1). The relation between radar echoes and the reflecting material in the storms was discussed. Previous research has shown the intensity of the return radiation, among other things, to be proportional to the number
openaire +1 more source
Radar photographs of thunderstorms and the Florida hurricane of September 1945 were shown to illustrate structure of those storms (see Fig. 1). The relation between radar echoes and the reflecting material in the storms was discussed. Previous research has shown the intensity of the return radiation, among other things, to be proportional to the number
openaire +1 more source
1977
The detection of hail by single and multi-wavelength radar reflectivity and depolarization measurements is reviewed. There are problems of interpretation involved in the detection of hail by the Eccles-Atlas dual-wavelength (10 cm and 3 cm) method because of the possible effects of range variations of mean hail diameter and water coat thickness on hail.
R. C. Srivastava, A. R. Jameson
openaire +1 more source
The detection of hail by single and multi-wavelength radar reflectivity and depolarization measurements is reviewed. There are problems of interpretation involved in the detection of hail by the Eccles-Atlas dual-wavelength (10 cm and 3 cm) method because of the possible effects of range variations of mean hail diameter and water coat thickness on hail.
R. C. Srivastava, A. R. Jameson
openaire +1 more source
2012
This chapter consists of noise-limited radar range equation, detections in noise, minimum detectable signal, processing gain via pulse integration and radar cross section.
openaire +1 more source
This chapter consists of noise-limited radar range equation, detections in noise, minimum detectable signal, processing gain via pulse integration and radar cross section.
openaire +1 more source
2023
Abstract The theories of noise underwent a further change in the 1940s, as physicists, engineers, and mathematicians participated in military research during World War II. Whereas interwar research tackled the nature, causes, and properties of noise, the wartime research focused on the behavior of systems, machines, and devices in noisy ...
openaire +1 more source
Abstract The theories of noise underwent a further change in the 1940s, as physicists, engineers, and mathematicians participated in military research during World War II. Whereas interwar research tackled the nature, causes, and properties of noise, the wartime research focused on the behavior of systems, machines, and devices in noisy ...
openaire +1 more source
Sensitivity of the Probability of Radar Detection to Radar State Uncertainty
IEEE Transactions on Aerospace and Electronic Systems, 2023Austin Costley +3 more
openaire +1 more source
Bulletin of the American Meteorological Society, 1950
On July 20, 1949 what are thought to be the first photographs of the radar indication of lightning strokes were obtained by the Weather Radar Research Project of the Massachusetts Institute of Technology. The method of radar lightning detection is described, and suggestions are made for research in this field.
openaire +1 more source
On July 20, 1949 what are thought to be the first photographs of the radar indication of lightning strokes were obtained by the Weather Radar Research Project of the Massachusetts Institute of Technology. The method of radar lightning detection is described, and suggestions are made for research in this field.
openaire +1 more source
Icarus, 1980
Asteroid 4 Vesta was detected on November 6, 1979 with the Arecibo Observatory's S-band (12.6-cm-wavelength) radar. The echo power spectrum, received in the circular polarization opposite to that transmitted, yields a radar cross section of (0.2 + or - 0.1)pi a-squared, for a = 272 km.
openaire +1 more source
Asteroid 4 Vesta was detected on November 6, 1979 with the Arecibo Observatory's S-band (12.6-cm-wavelength) radar. The echo power spectrum, received in the circular polarization opposite to that transmitted, yields a radar cross section of (0.2 + or - 0.1)pi a-squared, for a = 272 km.
openaire +1 more source
MS-YOLO: Object Detection Based on YOLOv5 Optimized Fusion Millimeter-Wave Radar and Machine Vision
IEEE Sensors Journal, 2022Yunyun Song +2 more
exaly