10 Multi-channel Radar Systems
191
Fig. 10.10 Signal timing diagram at LNA input
where the main signal processing is carried out, namely decision making on detection, solving the spatial problem of determining coordinates, forming an adaptive
detection threshold, discrimination of moving targets, tracking the target. To solve
the spatial problem of determining the aerial target coordinates at the DPU: To calculate the slant range to the target, a time method is used, to calculate the azimuth, the
DPU receives a signal from the angular position sensor of the antenna system, which
carries information on rotation angle of the antenna system, and determining the
elevation angle is reduced to fixing the channel, on which the target was detected.
The control of parameters and state of the radar operation is carried out by the built-in
control system. The timing diagram, corresponding to the signal after processing at
DPU, is shown in Fig. 10.11.
Figure 10.12 shows the timing diagrams of a real sounding signal of an en route
radar, received at a remote point, and they represent a sequence of 8 monochrome,
short-duration pulses intended for targets detection in the near field and a sequence
of 4 pulses with LFM to detect targets in the far zone with great energy potential.
191
Fig. 10.10 Signal timing diagram at LNA input
where the main signal processing is carried out, namely decision making on detection, solving the spatial problem of determining coordinates, forming an adaptive
detection threshold, discrimination of moving targets, tracking the target. To solve
the spatial problem of determining the aerial target coordinates at the DPU: To calculate the slant range to the target, a time method is used, to calculate the azimuth, the
DPU receives a signal from the angular position sensor of the antenna system, which
carries information on rotation angle of the antenna system, and determining the
elevation angle is reduced to fixing the channel, on which the target was detected.
The control of parameters and state of the radar operation is carried out by the built-in
control system. The timing diagram, corresponding to the signal after processing at
DPU, is shown in Fig. 10.11.
Figure 10.12 shows the timing diagrams of a real sounding signal of an en route
radar, received at a remote point, and they represent a sequence of 8 monochrome,
short-duration pulses intended for targets detection in the near field and a sequence
of 4 pulses with LFM to detect targets in the far zone with great energy potential.