www.radartutorial.eu Radar Basics

Plot Processor

Inputs from signalprocesors
Radar channels A & B
combination
of short pulses
combination
of long pulses
(high beam)
combination
of long pulses
(low beam)
overall
combination

Figure 1: Block diagramm of a plot processor in a frequency-diversity radar using high- and low-beam feeding of the antenna

Inputs from signalprocesors
Radar channels A & B
combination
of short pulses
combination
of long pulses
(high beam)
combination
of long pulses
(low beam)
overall
combination

Figure 1: Block diagramm of a plot processor in a frequency-diversity radar using high- and low-beam feeding of the antenna

Block diagramm of a plot processor
Inputs from signalprocesors
Radar channels A & B
combination
of short pulses
combination
of long pulses
(high beam)
combination
of long pulses
(low beam)
overall
combination

Figure 1: Block diagramm of a plot processor in a frequency-diversity radar using high- and low-beam feeding of the antenna

Plot Processor

The principal role of the plot processor is to combine primary plots from the various primary radar channels or sources into a single best estimate plot. The plot processor may also incorporate a range of other functions to improve the quality of the primary radar plot. A typical modern primary radar will generate plots from some or all of the following:

In general the combination of information from all these sources is best carried out at plot level. Combining data earlier in the system usually involves loss of information, particularly, if carried out before coherent integration. Plot combination can be carried out in a general purpose computer which permits full control of the characteristics of the combination process. Typically, the plot combination will include a weighted average of position of the related plots modified by other parameters such as the energy level.