Results 251 to 260 of about 181,408 (304)
Research on the application of unmanned aerial vehicle aeromagnetic measurement based on rubidium optical pump magnetometer. [PDF]
Sci RepZhou H +10 more
europepmc +1 more source
Some of the next articles are maybe not open access.
Related searches:
Related searches:
The Journal of Wildlife Management, 1976
By use of balanced experiments amenable to analysis of variance we explored the effects of several factors on the accuracy of aerial survey estimates of animal density. Speed, height above ground, transect width, and observers had significant effects, whereas time of day, fatigue of observers, and length of survey were less important.
Graeme Caughley +2 more
openaire +1 more source
By use of balanced experiments amenable to analysis of variance we explored the effects of several factors on the accuracy of aerial survey estimates of animal density. Speed, height above ground, transect width, and observers had significant effects, whereas time of day, fatigue of observers, and length of survey were less important.
Graeme Caughley +2 more
openaire +1 more source
Journal of Navigation, 1950
In his Presidential Address to the Institute this year the Astronomer Royal, Sir Harold Spencer Jones, stresses the importance of an early resumption of the general survey of the Earth's magnetic field and developments in airborne magnetometers in the United States have suggested the possibility of using aircraft for this purpose.
openaire +1 more source
In his Presidential Address to the Institute this year the Astronomer Royal, Sir Harold Spencer Jones, stresses the importance of an early resumption of the general survey of the Earth's magnetic field and developments in airborne magnetometers in the United States have suggested the possibility of using aircraft for this purpose.
openaire +1 more source
2017
The aim of this chapter is to provide a general overview about the main components of a developed UAS mapping system, the survey, and processing procedure. At first (4.1), a brief introduction is given about basic operational elements and accessories of UAS.
Gergely Szabó +5 more
openaire +1 more source
The aim of this chapter is to provide a general overview about the main components of a developed UAS mapping system, the survey, and processing procedure. At first (4.1), a brief introduction is given about basic operational elements and accessories of UAS.
Gergely Szabó +5 more
openaire +1 more source
The Journal of Wildlife Management, 1977
Sampling procedures appropriate to aerial survey were compared firstly in terms of the statistical efficiency and secondly according to their operational practicality. Sampling without replacement is more precise than sampling with replacement, but it requires a standard of navigation often impossible to achieve in practice.
openaire +1 more source
Sampling procedures appropriate to aerial survey were compared firstly in terms of the statistical efficiency and secondly according to their operational practicality. Sampling without replacement is more precise than sampling with replacement, but it requires a standard of navigation often impossible to achieve in practice.
openaire +1 more source
Repeatability of aerial surveys
Australian Zoologist, 1999In order to monitor population trends through space and time, aerial surveys need to provide density estimates that are a constant proportion of the true population density and are therefore repeatable. Previous work has identified factors that affect the visibility of kangaroos from fixed-wing aircraft and the relative contribution of these factors to
openaire +1 more source
The Photogrammetric Record, 1986
AbstractDuring 1985, the opportunity arose to make some test flights with the Wild RC10A and the Zeiss (Oberkochen) RMK A 15/23 with forward motion compensation. This paper outlines the changes incorporated in modern cameras, summarises the Ordnance Survey's photogrammetric tasks, describes the test flights which were achieved and illustrates the ...
openaire +1 more source
AbstractDuring 1985, the opportunity arose to make some test flights with the Wild RC10A and the Zeiss (Oberkochen) RMK A 15/23 with forward motion compensation. This paper outlines the changes incorporated in modern cameras, summarises the Ordnance Survey's photogrammetric tasks, describes the test flights which were achieved and illustrates the ...
openaire +1 more source