Display device for target position-finding apparatus

Claim 2

In a target position-finding apparatus of the type employing echo signals to display a true map-scale image of targets on a cathode-ray tube screen, the improvement comprising: a. a three-color cathode-ray tube, having three inputs, one for each respective color; b. first means connected to one of said inputs for supplying a display signal only from echo signals having no Doppler shift whereby targets having no radial motion with respect to said position-finding apparatus are displayed in one color; c. second means connected to a second of said inputs for supplying a display signal only from echo signals having positive Doppler shift whereby targets having a radial motion away from said position-finding apparatus are displayed in a second color; and d. third means connected to a third of said inputs for supplying a display signal only from echo signals having negative Doppler shift whereby targets having a radial motion toward said position-finding apparatus are displayed in a third color.

Claim 3

In a target position-finding apparatus of the type employing echo signals to display a true map-scale image of targets on a cathode-ray tube screen, the improvement comprising, in combination: a. receiver means for producing a plurality of discrete output signals at respective outputs thereof, one of said output signals being representative of echo signals obtained from objects which are substantially stationary with respect to said receiver means, and two others being representative of echo signals respectively with positive and negative Doppler shift obtained from objects which have relative movement with respect to said receiver means; b. a multicolor cathode-ray tube having a plurality of electron guns for producing spots of respectively different colors, each electron gun being connected to a different one of said outputs of the receiver means whereby the intensities of the corresponding spots are in accord with the respective output signals of the receiver means; and c. means for controlling said electron guns to produce a PPI display on said tube.

Claim 4

In a target position-finding apparatus of the type employing echo signals to display a true map-scale image of targets on a cathode-ray tube screen, the improvement comprising, in combination: a. receiver means for producing a plurality of discrete output signals at respective outputs thereof, one of said output signals being representative of echo signals obtained from objects which are substantially stationary with respect to said receiver means, and two others being representative of echo signals respectively with positive and negative Doppler shift obtained from objects which have relative movement with respect to said receiver means; b. a multicolor cathode-ray tube having a plurality of electron guns for producing spots of respectively different colors, each electron gun being connected to a different one of said outputs of the receiver means whereby the intensities of the corresponding spots are in accord with the respective output signals of the receiver means; and c. means for controlling said electron guns to produce a PPI display on said tube.

Claim 5

In a target position-finding apparatus of the type employing echo signals to display a true map-scale image of targets on a cathode-ray tube screen, the improvement comprising, in combination: a. a multicolor cathode-ray tube having separate means for producing each of three spots of different colors; b. means for periodically deflecting said spots to provide a PPI display on said tube; and c. receiver means for controlling the intensities of said spots so that the different colors and intensities of said PPI display provide different intelligence data, said receiver means having three different outputs connected to the separate means for producing each of the three spots such that each spot is controlled solely by a different one of said outputs, one of said outputs being representative of echo signals returned without Doppler shift, a second output being representative of echo signals returned with positive Doppler shift, and a third output being representative with echo signals returned with negative Doppler shift.

Claim 6

In a target position-finding apparatus of the type employing echo signals to display a true map-scale image of targets on a cathode-ray tube screen, the improvement comprising, in combination: a. a multicolor cathode-ray tube having separate means for producing each of three spots of different colors; b. means for periodically deflecting said spots to provide a PPI display on said tube; and c. receiver means for controlling the intensities of said spots so that the different colors and intensities of said PPI display provide different intelligence data, said receiver means having three different outputs connected to the separate means for producing each of the three spots such that each spot is controlled solely by a different one of said outputs, one of said outputs being representative of echo signals returned without Doppler shift, a second output being representative of echo signals returned with positive Doppler shift, and a third output being representative with echo signals returned with negative Doppler shift.

Claim 7

In a target position-finding apparatus of the type employing echo signals to display a true map-scale image of targets on a cathode-ray tube screen, the improvement comprising, in combination: a. receiver means having a target echo output; b. means for separating said output into three components respectively corresponding to echo signals returned with no Doppler shift, echo signals returned with positive Doppler shift, and echo signals returned with negative Doppler shift; c. means for storing time-separated values of saId components; d. a multicolor cathode-ray tube having three electron guns for producing spots of respectively different colors; e. means for scanning said electron guns at a rate which is much faster than the rate at which the time-separated values of said components are stored; and f. means for controlling the intensity of the spot produced by each electron gun according to the stored value of a respective component.

Claim 8

In a target position-finding apparatus of the type employing echo signals to display a true map-scale image of targets on a cathode-ray tube screen, the improvement comprising, in combination: a. receiver means having a target echo output; b. means for separating said output into three components respectively corresponding to echo signals returned with no Doppler shift, echo signals returned with positive Doppler shift, and echo signals returned with negative Doppler shift; c. means for storing time-separated values of saId components; d. a multicolor cathode-ray tube having three electron guns for producing spots of respectively different colors; e. means for scanning said electron guns at a rate which is much faster than the rate at which the time-separated values of said components are stored; and f. means for controlling the intensity of the spot produced by each electron gun according to the stored value of a respective component.

Claim 9

In the target position-finding apparatus according to claim 4, said receiver means having a plurality of outputs corresponding to individual preformed beams.