Radar data converter and display system

Claim 2

In a moving target detecting apparatus, a system for analyzing and converting signals containing information about a plurality of target parameters, said system comprising: a plurality of storage means for separately storing doppler information signals from a plurality of range intervals; a plurality of analyzing channels, one for each said range interval, for analyzing the stored doppler information signals when they are read out of said storage means; a plurality of two-dimensional storage matrices for receiving the outputs of said analyzing channels and converting said outputs into a plurality of two-dimensional storage plots with each said target parameter plotted as a function of each of the other target parameters; a time generator to produce regularly spaced pulses indicative of time; and means to couple said regularly spaced pulses to at least one of said storage matrices to record at least one of said target parameters as a function of time.

Claim 3

The system of claim 1 wherein each of the two-dimensional storage matrices comprises a plurality of capacitors.

Claim 4

The system of claim 2 wherein each of the two-dimensional storage matrices includes gating means for selectively gating input signals to said capacitors.

Claim 5

The system of claim 3 wherein at least some of said gating means include unilateral devices to permit the corresponding capacitors to charge to the maximum signals presented thereto.

Claim 6

A phase-coherent pulse-doppler radar system comprising: means to produce on a plurality of lines, one for each of a like plurality of range intervals, frequency signals whose frequencies vary with the doppler frequencies produced by targets in the corresponding range intervals; analyzing means comprising a plurality of analyzing channels connected individually to respective ones of said lines to receive said frequency signals; a variable frequency generating means for producing a repeated sequence of fixed and smoothly varying frequencies; programming means connected to said variable frequency generating means to regularly step said variable frequency through said sequence of fixed and varying frequencies; means connecting the output of said variable frequency generating means in parallel to each of said analyzing channels; means connecting the outputs of said analyzing channels in parallel to a plurality of storage matrices each comprising a two-dimensional array of storage elements; and strobing means for each of said storage matrices connected to said programming means for gating the output signals of said analyzing channels into said storage elements.

Claim 7

A phase-coherent pulse-doppler radar system comprising: means to produce on a plurality of lines, one for each of a like plurality of range intervals, frequency signals whose frequencies vary with the doppler frequencies produced by targets in the corresponding range intervals; analyzing means comprising a plurality of analyzing channels connected individually to respective ones of said lines to receive said frequency signals; a variable frequency generating means for producing a repeated sequence of fixed and smoothly varying frequencies; programming means connected to said variable frequency generating means to regularly step said variable frequency through said sequence of fixed and varying frequencies; means connecting the output of said variable frequency generating means in parallel to each of said analyzing channels; means connecting the outputs of said analyzing channels in parallel to a plurality of storage matrices each comprising a two-dimensional array of storage elements; and strobing means for each of said storage matrices connected to said programming means for gating the output signals of said analyzing channels into said storage elements.

Claim 8

The system of claim 5 wherein said variable frequency generating means includes an acceleration profile generator which under control of said programming means is stepped to cause the variable frequency to be varied sequentially at a plurality of predetermined different rates.

Claim 9

The system of claim 6 wherein at least one of said strobing means is stepped in unison with the stepping of said acceleration profile generator.

Claim 10

The system of claim 6 wherein at least one of said strobing means is stepped in unison with the stepping of said staircase generator.

Claim 11

The system of claim 5 including: a time generator which supplies regularly spaced stepping pulses to at least one of said strobing means so that the two-dimensional array of storage elements in at least one of said storage matrices is gated as a function of time.

Claim 12

The system of claim 5 wherein each storage element is a capacitor.

Claim 13

The system of claim 6 wherein said variable frequency generating means includes a staircase generator which under the control of said programming means is stepped to cause the variable frequency to shift in a stepwise manner.

Claim 14

A radar signal converter system comprising: means to separate signals containing doppler information according to the range intervals from which the signals were derived; frequency generating means to stepwise produce a sequence of fixed and varying known frequencies; one analyzing means for each range interval to accept said doppler information signals for that range interval and said sequence of fixed and varying known frequencies to produce a pulse signal whenever the frequency difference between the doppler information signal and the known frequency is within a predetermined band; means connecting the outputs of said analyzing means in parallel to a Plurality of two-dimensional storage matrices; gating means associated with each said storage matrix to sequentially gate said pulse signals to plural storage elements in said storage matrix; and write-in strobing means associated with each said storage matrix acting in unison with the stepping of the frequency generating means to sequentially contrl said gating means.

Claim 15

A radar signal converter system comprising: means to separate signals containing doppler information according to the range intervals from which the signals were derived; frequency generating means to stepwise produce a sequence of fixed and varying known frequencies; one analyzing means for each range interval to accept said doppler information signals for that range interval and said sequence of fixed and varying known frequencies to produce a pulse signal whenever the frequency difference between the doppler information signal and the known frequency is within a predetermined band; means connecting the outputs of said analyzing means in parallel to a Plurality of two-dimensional storage matrices; gating means associated with each said storage matrix to sequentially gate said pulse signals to plural storage elements in said storage matrix; and write-in strobing means associated with each said storage matrix acting in unison with the stepping of the frequency generating means to sequentially contrl said gating means.

Claim 16

The system of claim 12 including: readout strobing means associated with each said storage matrix to sequentially control the readout of the information stored in said storage matrix.

Claim 17

The system of claim 13 including: a cathode ray tube associated with each said storage matrix to display the information read out of said storage matrix.