Resolution on the angular coordinate (direction) is in number characterized by the minimum corner (on an azimuth or a corner of places between the directions on two purposes equidistanted relatively RLS at which their separate supervision is still possible.
In this case it does not make sense to speak about resolution on a place corner since we project survey RLS which antenna has the kosekansny directional pattern and does not take resolution on a corner place.
The onboard radars created on element base of the first generation (electron tubes, volume installation), big dimensions and weight, had small reliability and consisted of a large number of blocks. Transition to element base of the second generation (semiconductor devices and modules) allowed to improve considerably characteristics of a number of knots and blocks.
Sinkhr. – synchronizer; To THEM – the pulse modulator; The microwave oven of the Gen. – the microwave oven generator; AP – the antenna switch; GMI – the generator of large-scale impulses; PRM – the receiver; GR – the development generator; ELT – an electron beam tube; The PROGRAM STATUS WORD – the silsinno-watching transfer; MVA – the mechanism of rotation of the antenna.
At impossibility of placement by plane of the main indicator (the block instead of it the additional indicator (the block 4-having the smaller sizes can be installed. In this case in a complete set of station the separate control panel (the block is surely removed
Width of the directional pattern of the antenna influences range of radar supervision. In process of narrowing of the directional pattern of the antenna its coefficient of the directed action increases and respectively the maximum range of action of RLS increases.
Synchronization of operation of the transferring RLS channel is carried out a power line with a frequency of 400 Hz. The modulator of the transceiver forms the high-voltage impulses arriving on the magnetron which generates the microwave oven impulses. For an obespecheniyaprogrev of the cathode of the magnetron in the modulator of the transceiver the delay for 3 — 5 min. formation of the modulating impulse in relation to the moment of inclusion of supply voltage 115B 400gts is carried out. Microwave ovens impulses through a circulator and a ferrite rotator of the plane of polarization on the waveguide path are transferred to an irradiator of the antenna block. The circulator serves for switching of the antenna with reception on the transferring canal, i.e. carries out function of the antenna switch.
At a radar complete set by one indicator block the structure of a set has to surely include an equivalent of the additional indicator (the block At equipment of the plane two indicators the additional indicator turns on instead of the specified equivalent.
The generator of development of range develops sawlike changing current in the rejecting coil. Thus the electronic beam makes uniform motion along the radius of ELT which in turn rotates together with the antenna. Such development of a beam on the ELT screen is called radial and circular. She creates on the screen the image (which is often called by a raster) in the form of the radiuses which are closely adjoining to each other.
At change of polarization of the irradiating fluctuations with vertical on horizontal (when giving 27B on a ferrite rotator of the plane of polarization) the reflector of a special form opaque to waves of this polarization, together with a paraboloid of rotation forms the profile forming the fan directional pattern in the vertical plane.
For convenience usually consider separately the directional pattern in the horizontal plane and the directional pattern in the vertical plane. Thus pay attention to width of the directional pattern of q.
On the contrary, high precision of counting of angular coordinates and resolution are, as a rule, important for short-range RLS. In such cases it is favorable to use centimetric, and sometimes and millimetric waves as at the general small radius of action of station attenuation of electromagnetic waves in the atmosphere will affect still not too strongly.