One-operation signal processor

Claim 2

A data processing and display system for radar comprising: storage means for storing radar return information in a range ordered manner and for producing a sequential range readout signal representative of said information; a plurality of processing frequency channels connected in parallel to receive said sequential range readout signal, each of said processing frequency channels including a band pass filter, a discriminator and a threshold device connected in series; each of said band pass filters having a pass band different from the pass band of the other of said filters; each of said discriminators having frequency response characteristics substantially identical to the frequency response characteristics of the other of said discriminators; each of said threshold devices producing an output signal only if the output of said series connected discriminator exceeds a predetermined energy level, and display means connected to said plurality of processing frequency channels and functioning to display by range the velocity and acceleration parameters of constant velocity and non-constant velocity targets as contained in said stored radar return information.

Claim 3

The data processing and display system of claim 1 wherein the pass bands of said band pass filters are contiguous, one with another, and collectively span a predetermined frequency range which encompasses the expected frequency range of the readout signal of said storage means.

Claim 4

The data processing and display system of claim 2 wherein said display means includes: a first cathode ray tube (CRT) device having an intensity input and first and second orthogonal inputs, said first orthogonal input being connected to be synchronized with the sequential range readout signal of said storage means; first commutator means connected to the outputs of each of said threshold devices and functioning to sequentially connect individual ones of said threshold device outputs to the intensity input of said first CRT device; second commutator means connected to the inputs of each of said threshold devices and functioning to sequentially connect individual ones of said threshold device inputs to said second orthogonal CRT input; whereby said first CRT device displays constant velocity target information from the readout of said storage means in the form of bright dots, the location of said dots in one orthogonal display direction being indicative of target range and the location of said dots in the other orthogonal direction being indicative of target velocity.

Claim 5

The data processing and display system of claim 3 wherein said display means further includes: a second cathode ray tube (CRT) device having an intensity input, a directional input and an orthogonal direction sweep input, said orthogonal direction sweep input being connected to be synchronized with the sequential range readout signal of said storage means; a summer connected to the outputs of said discriminators; an integrator connected to said summer and a sample and hold device connected to said integrator and producing an output signal which is connected to said second CRT intensity and directional inputs; whereby said second CRT device displays non-constant velocity target information from the readout of said storage means in the form of bright dots, the location of said dots in one orthogonal display direction being indicative of target velocity and the location of said dots in the other orthogonal direction being indicative of target range.

Claim 6

The data processing and display system of claim 4 wherein said display means further includes: a third cathode ray tube (CRT) device having an intensity input, a directional input and an orthogonal direction sweep input; first and second delay means, each of which function to delay electrical signals a predetermined period of time, said first delay means being connected to said summer and said second delay means being connected between the orthogonal direction sweep inputs of said second and third CRT devices; a subtractor connected to said first delay means and to said sample and hold device and a second integrator connected to said subtractor and producing an output signal which is connected to said third CRT intensity and directional inputs whereby said third CRT device displays non-constant velocity target information from the readout of said storage means in the form of bright streaks, the location of said streaks in one orthogonal display direction being indicative of target acceleration and the location of said streaks in the other orthogonal direction being indicative of target range.

Claim 7

In a data processing and display system for radar wherein the receiver video doppler signal is stored in range order and, upon readout, is further separated by frequency into a plurality of channels, each of which includes a discriminator and a threshold device that produces an output only when energized by a discriminator output signal in excess of a certain strength, such as is caused by a target of constant velocity or by jamming, display apparatus comprising: first cathode ray tube (CRT) means synchronized with said readout and connected to said plurality of channels to display a plot of constant velocity target or jamming information against range; second CRT means synchronized with said readout and functioning to display a plot of non-constant velocity target information against range; third CRT means synchronized with said readout and functioning to display a plot of target acceleration information against range and circuit means connected between the discriminators and threshold devices in said plurality of channels and said second and third CRT means and functioning to produce signals which control the intensity and one directional position of the traces which produce the plots displayed by said second and third CRT means.

Claim 8

In a data processing and display system for radar wherein the receiver video doppler signal is stored in range order and, upon readout, is further separated by frequency into a plurality of channels, each of which includes a discriminator and a threshold device that produces an output only when energized by a discriminator output signal in excess of a certain strength, such as is caused by a target of constant velocity or by jamming, display apparatus comprising: first cathode ray tube (CRT) means synchronized with said readout and connected to said plurality of channels to display a plot of constant velocity target or jamming information against range; second CRT means synchronized with said readout and functioning to display a plot of non-constant velocity target information against range; third CRT means synchronized with said readout and functioning to display a plot of target acceleration information against range and circuit means connected between the discriminators and threshold devices in said plurality of channels and said second and third CRT means and functioning to produce signals which control the intensity and one directional position of the traces which produce the plots displayed by said second and third CRT means.