초록 ▼

A digital detection criteria control device for use in a radar tracking system incorporating a memory that is electronically synchronized to a surveillance radar in a manner to perform video mapping and control functions. This memory is organized so that each small quantum area of the radar\s survei

A digital detection criteria control device for use in a radar tracking system incorporating a memory that is electronically synchronized to a surveillance radar in a manner to perform video mapping and control functions. This memory is organized so that each small quantum area of the radar\s surveillance area has code bits which are controlled primarily by inputs from valid and invalid video return detectors. These detectors examine quantized video returns from the radar for certain bit densities and bit patterns to determine whether the video returns are valid or invalid targets. The code bits provide a history of the type of video return for each quantum area thereby making a more accurate indication of the nature of the video return possible.

대표청구항 ▼

A digital detection criteria control device for operation in conjunction with a radar transmitter-receiver apparatus having range count and azimuth position signals and capable of generating a quantized video signal, said digital detection criteria control device comprising a memory having a predete

A digital detection criteria control device for operation in conjunction with a radar transmitter-receiver apparatus having range count and azimuth position signals and capable of generating a quantized video signal, said digital detection criteria control device comprising a memory having a predetermined number of words, each of said words having a plurality of sets of first, second and third bits, corresponding sets of said first, second and third bits within each word corresponding to quantum areas within one of a plurality of sectors constituting the surveillance area of said radar transmitter-receiver; means responsive to said range count and azimuth position signals for sensing successive bits of said memory at the same rate as and in synchronism with the bits of said quantized video signal; target detection apparatus responsive to said quantized video signal for determining whether target indications from said quantized video signal are valid or invalid; means for periodically generating code bits and writing said code bits in said memory in response to said target indications for each quantum area of said surveillance area; means for reading said code bits out from said memory in synchronism with coverage of said surveillance area by said radar transmitter-receiver; and means responsive to said code bits read out from said memory for providing control indications for successive corresponding quantum areas of said surveillance area and to switch to preselected types of receivers of said radar transmitter-receiver apparatus for said successive corresponding quantum areas.