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Browse Prior Art Database

Radar Simulator

IP.com Disclosure Number: IPCOM000083485D
Original Publication Date: 1975-Jun-01
Included in the Prior Art Database: 2005-Mar-01
Document File: 3 page(s) / 59K

Publishing Venue

IBM

Related People

Menhennett, JR: AUTHOR [+3]

Abstract

In devices to simulate the presentation on a radar screen for training purposes, it is necessary to generate the signals which would be supplied to the display of an operating radar. The system illustrated will provide such a set of signals.

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Radar Simulator

In devices to simulate the presentation on a radar screen for training purposes, it is necessary to generate the signals which would be supplied to the display of an operating radar. The system illustrated will provide such a set of signals.

As indicated in the drawings, a data processor 1 will generate data representing the locations of a plurality of targets, the range scales to be displayed and other required control signals to determine the operation of the radar simulator. This information is passed thru an OR 2 to a bus 3, under control of sequencer and clock 4, which can receive control data from bus 3, and acts to energize bus 12 to control the entry of further data into signal generators. Unit 4 can also determine the passage of data loaded in a set of buffer registers 5 thru the OR 2 to bus 3, or the loading of a set of data-out buffer registers 6 from data bus 3.

The signal generators are a sea clutter switch 7, a plurality of target generators 8, one for each target to be presented, an azimuth generator 9, a range generator 10 and a trigger or zero range generator 11. The switch 7 is responsive to control signals from bus 3 and to a range signal from bus 13 from range generator 10 to activate a gate 14, which will allow a noise signal on a line 15 to pass to an amplifier 16 that generates a video out signal on output 17.

The target generators 8 receive information about a target, i.e., range, azimuth, and size from bus 3 under control of signals on bus 12. When the simulated range from generator 10 and the azimuth from generator 9 correspond to the target data, a generator 8 will send a signal thru OR 18 to amplifier 16 for a target indication on the radar screen.

Trigger generator 11 sets a signal on line 20 to represent the zero range point of a radar pulse, and its frequency is adjustable by control signals on bus 3 to allow for differing resolution and antenna scan speeds to be simulated. The range generator 10 uses a range counter started by a pulse from trigger generator 11 to put a range sweep signal on bus 13. The counting speed of the counter can be varied to simulate a varied range limit and the counter can be compared with a preset range word, to indicate the start of a range b...