Radar using matrix storage and filters

Claim 2

A radar comprising: transmitting and receiving means providing trigger pulse, inphase ''''I'''' and quadrature ''''Q'''' coherent video signals; first capacitor matrix storage means connected to be synchronized by said trigger pulse signal and to receive said ''''I'''' video signal and functioning to store samples of said ''''I'''' video signal; second capacitor matrix storage means connected to be synchronized by said trigger pulse signal and to receive said ''''Q'''' video signal and functioning to store samples of said ''''Q'''' video signal; filter means connected to receive the outputs of said first and second capacitor matrix storage means and having a plurality of outputs; a display system and gating means controlled by said trigger pulse signal to sequentially connect said plurality of filter means outputs to said display system.

Claim 3

The radar of claim 1 wherein said filter means includes a plurality of broad band filters.

Claim 4

The radar of claim 2 wherein said broadband filters are matrix-type filters which are characterized by including a plurality of parallel input resistors, the values of said resistors being determined by calculations relating to the desired center frequency and to the desired band-pass of said filter and including weight factors relating to the desired response of said filter.

Claim 5

The radar of claim 1 wherein said filter means includes an equal plurality of filter banks and peak selectors, said filter banks being characterized by each having a plurality of output leads which are connected to a peak selector.

Claim 6

The radar of claim 4 wherein each filter bank includes a plurality of filters which have center frequency and frequency response characteristics such that the passbands of said plurality of filters contiguously span the doppler frequency band of the radar.

Claim 7

The radar of claim 5 wherein each of said plurality of filters is characterized by including a plurality of parallel input resistors, the values of said resistors being determined by calculations relating to the desired center frequency and to the desired band-pass of said filter and including Tchebyscheff weight factors relating to the desired side lobe response of said filter.

Claim 8

The radar of claim 1 wherein said filter means includes a plurality of filter banks, each filter bank being characterized by having a plurality of output leads which are sequentially connected as a group to said display system by said gating means.

Claim 9

The radar of claim 7 wherein each filter bank includes a plurality of filters which have center frequency and frequency response characteristics such that the passbands of said plurality of filters contiguously span the doppler frequency band of the radar.

Claim 10

The radar of claim 8 wherein each of said plurality of filters is characterized by including a plurality of parallel input resistors, the values of said resistors being determined by calculations relating to the desired center frequency and to the desired band-pass of said filter and including Tchebyscheff weight factors relating to the desired side lobe response of said filter.

Claim 11

The radar of claim 1 wherein said display system is synchronized by said trigger pulse signal.

Claim 12

In a radar system wherein the coherent video signal is sampled and stored in capacitor storage matrix means having a plurality of 2n output leads where n is an integer equal to or greater than 6, signal correlator means comprising: n filter banks, each filter bank including a plurality of filters and each filter having 2n input leads and a single output lead, the 2n input leads of each filter being connected to the 2n leads of said capacitor storage matrix means; a display system having a plurality of input leads equal in number to the plurality of filters in each filter bank and gating means functioning to sequentially connect said display system with said filter banks.

Claim 13

In a radar system wherein the coherent video signal is sampled and stored in capacitor storage matrix means having a plurality of 2n output leads where n is an integer equal to or greater than 6, signal correlator means comprising: n filter banks, each filter bank including a plurality of filters and each filter having 2n input leads and a single output lead, the 2n input leads of each filter being connected to the 2n leads of said capacitor storage matrix means; a display system having a plurality of input leads equal in number to the plurality of filters in each filter bank and gating means functioning to sequentially connect said display system with said filter banks.

Claim 14

In the radar system of claim 11 wherein said capacitor storage matrix means stores samples of the inphase and quadrature phase coherent video signal and wherein the energy of said inphase and quadrature samples is combined in said filter banks.

Claim 15

In the radar system of claim 12 wherein each one of said plurality of filters in each of said n filter banks is an arrangement of a plurality of matrix-type filters, one-half of which are connected to receive inphase samples of said coherent video signal and the other half of which are connected to receive quadrature phase samples of said coherent video signal.

Claim 16

In the radar system of claim 13 wherein each matrix-type filter is characterized by including n resistors connected to n input leads of said filter, the values of said resistors being determined by calculations relating to the desired center frequency of said filter and to Tchebyscheff weight factors.

Claim 17

A radar comprising: transmitting and receiving means providing a trigger pulse, inphase ''''I'''' and quadrature ''''Q'''' coherent video signals; first and second capacitor matrix storage means, each storage means having n rows and r columns of storage capacitors, said first capacitor matrix storage means being connected to receive said ''''I'''' coherent video signals and said second capacitor matrix storage means being connected to receive said ''''Q'''' coherent video signal; storage-gating means controlled by said trigger pulse signal and functioning to control said first and second storage means to samPle said ''''I'''' and ''''Q'''' coherent video signals and, after each trigger pulse, to sequentially store r samples in the r capacitors of a row and to store, sequentially row by row, r samples of said ''''I'''' and ''''Q'''' coherent video signals after succeeding trigger pulses and, after each trigger pulse, to nondestructively read out the n signals stored in all r columns, said read out proceeding sequentially, column by column, until all r columns are read out, said readout being through the n output leads in each of said first and second capacitor matrix storage means; n filter banks, each filter bank being connected to the n output leads of said first capacitor matrix storage means and to the n output leads of said second capacitor matrix storage means; a display system and display-gating means, controlled by said trigger pulse signal, to sequentially connect said filter banks to said display system.

Claim 18

A radar comprising: transmitting and receiving means providing a trigger pulse, inphase ''''I'''' and quadrature ''''Q'''' coherent video signals; first and second capacitor matrix storage means, each storage means having n rows and r columns of storage capacitors, said first capacitor matrix storage means being connected to receive said ''''I'''' coherent video signals and said second capacitor matrix storage means being connected to receive said ''''Q'''' coherent video signal; storage-gating means controlled by said trigger pulse signal and functioning to control said first and second storage means to samPle said ''''I'''' and ''''Q'''' coherent video signals and, after each trigger pulse, to sequentially store r samples in the r capacitors of a row and to store, sequentially row by row, r samples of said ''''I'''' and ''''Q'''' coherent video signals after succeeding trigger pulses and, after each trigger pulse, to nondestructively read out the n signals stored in all r columns, said read out proceeding sequentially, column by column, until all r columns are read out, said readout being through the n output leads in each of said first and second capacitor matrix storage means; n filter banks, each filter bank being connected to the n output leads of said first capacitor matrix storage means and to the n output leads of said second capacitor matrix storage means; a display system and display-gating means, controlled by said trigger pulse signal, to sequentially connect said filter banks to said display system.

Claim 19

The radar of claim 15 wherein each of said n filter banks includes a plurality of k filter arrangements, each filter arrangement having a center frequency and a frequency response such that the k filter arrangements contiguously span the doppler frequency band of the radar.

Claim 20

The radar of claim 16 wherein each filter arrangement includes a plurality of matrix filters, one-half of which are connected to receive the readout of said first capacitor matrix storage means and the other half of which are connected to receive the readout of said second capacitor matrix storage means.

Claim 21

The radar of claim 17 wherein each matrix filter includes n input resistors, the values of said resistors being determined by calculations relating to the desired center frequency of the filter arrangement which includes the matrix filter and to Tchebyscheff weight factors.

Claim 22

The radar of claim 18 wherein said display system has k input leads and each filter bank has k output leads.

Claim 23

In a radar system wherein the coherent video signal is sampled and stored in capacitor storage matrix means having a plurality of 2n output leads where n is an integer equal to or greater than 6, signal correlator means comprising: a plurality of filter banks, each filter bank including a plurality of filters and each filter having 2n input leads and a single output lead, the 2n input leads of each filter being connected to the 2n output leads of said capacitor storage matrix means; a display system having a plurality of input leads equal in number to the plurality of filters in each filter bank and gating means functioning to sequentially connect said display system with said filter banks.

Claim 24

In a radar system wherein the coherent video signal is sampled and stored in capacitor storage matrix means having a plurality of 2n output leads where n is an integer equal to or greater than 6, signal correlator means comprising: a plurality of filter banks, each filter bank including a plurality of filters and each filter having 2n input leads and a single output lead, the 2n input leads of each filter being connected to the 2n output leads of said capacitor storage matrix means; a display system having a plurality of input leads equal in number to the plurality of filters in each filter bank and gating means functioning to sequentially connect said display system with said filter banks.

Claim 25

A radar comprising: transmitting and receiving means providing a trigger pulse, inphase ''''I'''' and quadrature ''''Q'''' coherent video signals; first and second capacitor matrix storage means, each storage means having n rows and r columns of storage capacitors, said first capacitor matrix storage means being connected to receive said ''''I'''' coherent video signal and said second capacitor matrix storage means being connected to receive said ''''Q'''' coherent video signal; storage gating means controlled by said trigger pulse signal and functioning to control said first and second storage means to sample said ''''I'''' and ''''Q'''' coherent video signals and, after each trigger pulse, to sequentially store r samples in the r capacitors of a row and to store, sequentially row by row, r samples of said ''''I'''' and ''''Q'''' coherent video signals after succeeding trigger pulses and, after each trigger pulse, to nondestructively read out the n signals stored in all r columns, said read out proceeding sequentially, column by column, until all r columns are read out, said readout being through the n output leadS in each of said first and second capacitor matrix storage means; a plurality of filter banks, each filter bank being connected to the n output leads of said first capacitor matrix storage means and to the n output leads of said second capacitor matrix storage means; a display system and display-gating means, controlled by said trigger pulse signal to sequentially connect said filter banks to said display system.

Claim 26

A radar comprising: transmitting and receiving means providing a trigger pulse, inphase ''''I'''' and quadrature ''''Q'''' coherent video signals; first and second capacitor matrix storage means, each storage means having n rows and r columns of storage capacitors, said first capacitor matrix storage means being connected to receive said ''''I'''' coherent video signal and said second capacitor matrix storage means being connected to receive said ''''Q'''' coherent video signal; storage gating means controlled by said trigger pulse signal and functioning to control said first and second storage means to sample said ''''I'''' and ''''Q'''' coherent video signals and, after each trigger pulse, to sequentially store r samples in the r capacitors of a row and to store, sequentially row by row, r samples of said ''''I'''' and ''''Q'''' coherent video signals after succeeding trigger pulses and, after each trigger pulse, to nondestructively read out the n signals stored in all r columns, said read out proceeding sequentially, column by column, until all r columns are read out, said readout being through the n output leadS in each of said first and second capacitor matrix storage means; a plurality of filter banks, each filter bank being connected to the n output leads of said first capacitor matrix storage means and to the n output leads of said second capacitor matrix storage means; a display system and display-gating means, controlled by said trigger pulse signal to sequentially connect said filter banks to said display system.