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2 Principal Physics of Radar Location and Radio-Navigation
Operation on signals of ground-based digital television is of principal interest
since signals of this system occupy a relatively wide band (up to 10 MHz) that
permits to obtain a best targets resolution in range rather than during using of signals
of other available radiating sources. The digital character of coding signal and as
consequence its relatively uniform amplitude spectrum permits to achieve detection
characteristics continuity. Due to the absence of owned transmitter, it is provided
the emission security, green functioning at less economical and operational costs.
However, the powerful primary illumination signal and generated by it background
returns (clutters) are serious noises.
For radar location (RLS) and radio-navigation stations (RNS), it is assumed that
characteristics of received radar signal are limited by the following: amplitude, phase,
frequency, delay time, polarization, wave angle of arrival, time and spectral structure,
change dynamics of mentioned characteristics in time and space. Modern RLS and
RNS handle by six components of resource: space, time, frequency, polarization,
energy (power), accumulated and delivered in a form of data and information knowledge on objects of background-target environment. The purpose of RLS and RNS
is in decrease of uncertainty on objects of background-target environment induced
in general due to the internal system features, external influence of foreign objects
and parameters influence of ambient environment through which an interaction with
background-target environment is performed within an available resource.
The non-coordinated (no-kinematic) parameters (characteristics) of target mean
an information on type, class of observation object, its size, electro-physical properties of surface, structural properties, and on intention of those to whom this object
“belongs.” Sometimes it is called the attribute data of target. These parameters
play an important role during target discrimination, or, wider, during monitoring of
background-target environment, since inherently the monitoring task finitely includes
an identification and interpretation of observed situation. Equally important to plan
and perform various courses of action according based on non-coordinate objects
characteristics. An opposite to non-coordinate parameters are of course the coordinated parameters meaning the typical characteristics of radar targets: presence
fact, amount of elements in complex target, range, velocity, flight altitude, maneuvering parameters, acceleration, angular coordinates, spatial position, dynamics
(flight pattern).
2 Principal Physics of Radar Location and Radio-Navigation
Operation on signals of ground-based digital television is of principal interest
since signals of this system occupy a relatively wide band (up to 10 MHz) that
permits to obtain a best targets resolution in range rather than during using of signals
of other available radiating sources. The digital character of coding signal and as
consequence its relatively uniform amplitude spectrum permits to achieve detection
characteristics continuity. Due to the absence of owned transmitter, it is provided
the emission security, green functioning at less economical and operational costs.
However, the powerful primary illumination signal and generated by it background
returns (clutters) are serious noises.
For radar location (RLS) and radio-navigation stations (RNS), it is assumed that
characteristics of received radar signal are limited by the following: amplitude, phase,
frequency, delay time, polarization, wave angle of arrival, time and spectral structure,
change dynamics of mentioned characteristics in time and space. Modern RLS and
RNS handle by six components of resource: space, time, frequency, polarization,
energy (power), accumulated and delivered in a form of data and information knowledge on objects of background-target environment. The purpose of RLS and RNS
is in decrease of uncertainty on objects of background-target environment induced
in general due to the internal system features, external influence of foreign objects
and parameters influence of ambient environment through which an interaction with
background-target environment is performed within an available resource.
The non-coordinated (no-kinematic) parameters (characteristics) of target mean
an information on type, class of observation object, its size, electro-physical properties of surface, structural properties, and on intention of those to whom this object
“belongs.” Sometimes it is called the attribute data of target. These parameters
play an important role during target discrimination, or, wider, during monitoring of
background-target environment, since inherently the monitoring task finitely includes
an identification and interpretation of observed situation. Equally important to plan
and perform various courses of action according based on non-coordinate objects
characteristics. An opposite to non-coordinate parameters are of course the coordinated parameters meaning the typical characteristics of radar targets: presence
fact, amount of elements in complex target, range, velocity, flight altitude, maneuvering parameters, acceleration, angular coordinates, spatial position, dynamics
(flight pattern).