On the need to calculate the stability of the quantum frequency standard on the rubidium gas cell for navigation systems

Abstract

The article presents the methods for calculating the stability of the rubidium frequency standards. To implement these methods, new software has been developed. Experimental measurements of telemetric parameters of the quantum frequency standard are processed using the developed software. The stability of the prototype of the rubidium standard has been determined using the proposed new algorithms.

Assessment of the level of soil pollution of agricultural lands Kotlin Island

“…There are many reasons for the increase in this load [7][8][9][10][11][12][13][14][15]. In most cases, they should be considered together, since there is a connection between them [9][10][11][12][16][17][18][19][20][21]. But one of them is common for all cases, it is associated with the lack of proper control on the part of humans over the load on the ecosystem [8-11, 16-20, 22-28].…”

Monitoring the water quality in our rivers in urban areas

“…The development of industry and agriculture has led to an increase in the technogenic load on the ecological system [1][2][3][4][5][6][7][8][9][10]. Especially this impact strongly affects the nature near large cities [1,4,[9][10][11][12][13][14][15][16].…”

“…The development of industry and agriculture has led to an increase in the technogenic load on the ecological system [1][2][3][4][5][6][7][8][9][10]. Especially this impact strongly affects the nature near large cities [1,4,[9][10][11][12][13][14][15][16]. In addition to industrial enterprises, sources of pollution in these cases are power plants, motor transport, and others [11,12,15,[17][18][19][20][21][22].…”

Peculiarities of state control to water objects with using of radar systems

“…The greatest difficulties arise when monitoring the water surface that is moving (for example, seas, flowing lakes, or water systems with intense winds causing waves). In these systems, currents or waves carry pollution over long distances, therefore, various aircraft have been used for monitoring in recent years, capable of surveying large areas in a short time [36,38,[43][44][45]. This allows you to determine the area where additional comprehensive monitoring using various devices is needed.…”

“…However, pollution often occurs during bad weather, and therefore monitoring must be carried out in all weather conditions. In this case, the radar method is more universal compared to the optical method [43][44][45][46][47]. The radar method allows you to get information at any time of the day under any weather conditions with a wide viewing IOP Publishing doi:10.1088/1755-1315/1096/1/012030 2 area of the water surface.…”