| 摘要 |
This invention relates to target displays for use in pulse-echo return systems such as radar and sonar systems. In this display a plurality of echo return or target signals are simultaneously displayed with each signal represented as a short straight directed line segment, the center or one end point of such line segment being positioned on the display screen with one coordinate determined by target range (pulse transit time) and the other coordinate determined in accordance with total elapsed time since transmission of the pulse resulting in that particular target return signal. The slope of each directed line segment is made proportional to target radial velocity (range rate) as determined by doppler shift of the return signal, and the intensity of display of the line segment is made proportional to the return signal amplitude. Return signals which correlate in range, in range rate and in signal amplitude then appear as a series of directed line segments connecting or very nearly connecting with each other to form a substantially continuous and readily identifiable target track while noise signals appear as unconnected lines of random orientation.
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