The speed of movement of piece space objects along the Earth's surface and its determination using incoherent scatter radar

Methodological features of registration and separation of coherent radar reflections from space objects and elements of “space debris” operating in orbit are considered. Registration occurs against the background of signals that are scattering of the probe radio wave on particles of the ionospheric plasma. Methods of how to obtain information about the components of the velocity vector of these objects in near-earth space with the help of specialized ground-based radar facilities are analyzed. Their disadvantage is the unreliable control of weak reflections from the elements of “space debris” if they have a small (up to centimeters) scattering cross section. The authors proposed to use the existing high-energy radar installations. Using the signals after the analog-to-digital conversion generated in quadrature, it is proposed to calculate the phase characteristics of the coherent reflection. The radial velocity of the objects along the radar beam is calculated by isolating the Doppler phase difference and statistically averaging these values ​​in the time of reflection. Similarly, by analyzing the time spent in the radar beam, the velocity component associated with the horizontal movement along the Earth’s surface is calculated. Real examples are given, when in one of the observation sessions on the reflection of a signal from a space object, the phase shift in each of its periods is calculated, and then, using the formula, proposed by the authors, the vertical component of the velocity of this object is calculated. Analyzing the observation time of this object in the beam of the transmitter antenna, an example of the calculation and the component of its horizontal velocity is shown. The block diagram of the radar used to calculate the specified parameters of the movement of space objects is presented. The developed approach is an effective solution of many practical problems in those industries that ensure the operation of spacecraft, ensuring the safety of space stations, optimal placement of objects in orbit, etc. Keywords: Incoherent scatter radar, space objects, coherent reflection, signal phase characteristics, radial and horizontal speed

Construction of the Meaning of a Motorcycle taxi Driver in Student Perception

The development of technology gave birth to a new profession. Millennials plunge into online motorcycle taxi drivers. The presence of various online transportation applications such as Go-Jek, Grab, Uber opens wide opportunities to become partners. Millennials are not ashamed but feel proud. The motorcycle taxi profession which is often underestimated is now in demand by various groups. This study aims to explain the changes in the construction of the meaning of motorcycle taxi drivers in the perception of students who become online motorcycle taxi drivers. The change in meaning construction has made the online motorcycle taxi profession attractive to the younger generation. Changes in construction will be described in various stages of the scheme, the process of externalization, objectification and internalization of values. This research strategy is phenomenological research. The basic question according to Patton (2002) is to find out the essence of experience. Littlejohn (1999: 199) defines phenomenology as the study of experiences that come from consciousness or the way we understand something by consciously experiencing something. Hegel (in Moustakas 1994: 26) states that phenomenology refers to experience as arises from consciousness, he further explains phenomenology is the science of describing what a person receives, feels and knows in his direct awareness and experience. What arises from consciousness is what is called a phenomenon. With this strategy, the researcher seeks to obtain a systematic, logical and coherent reflection of the reality phenomenon about the motorcycle taxi profession