초록 ▼

An image sorting system such as an airborne defense system for receiving and classifying enemy radar signals according to frequency, azimuth angle of arrival, etc. It employs a RAM that is addressed by the frequency and azimuth values of each received signal. If the addressed storage location in the

An image sorting system such as an airborne defense system for receiving and classifying enemy radar signals according to frequency, azimuth angle of arrival, etc. It employs a RAM that is addressed by the frequency and azimuth values of each received signal. If the addressed storage location in the RAM is empty, a number is assigned and stored there to represent the radar that is producing the received signals. The RAM represents a map of the aircraft\s environment. Hash addressing, chaining of overlapping radar signals, pipelining to facilitate the blocking of superfluous pulse Doppler signals, etc. enable rapid reliable sorting and identification of hundreds of radar or other signals in the area.

대표청구항 ▼

In a system for classifying a plurality of emitters of signals on the basis of the values of selected parameters of the signals, which receives signals of the emitters and measures at least first and second parameters of them, a sorter for sorting the signals in accordance with the identities of the

In a system for classifying a plurality of emitters of signals on the basis of the values of selected parameters of the signals, which receives signals of the emitters and measures at least first and second parameters of them, a sorter for sorting the signals in accordance with the identities of their emitters, comprising: RAM means having data storage locations that are addressable by multi-dimensional address sets for storing emitter-identifying pointers, a first dimension of each address set corresponding to a first parameter of such a signal and a second dimension of each address set corresponding to a second parameter of such a signal; means responsive to receipt of a signal that is to be sorted, for addressing said RAM by using its first and second parameters to read the contents of said address, including an emitter pointer if present, from a principally addressed storage location whose address corresponds to said first and second parameters; means responsive to said reading means for writing a fresh emitter pointer into at least the principally addressed storage location when it is found upon reading to be empty; means for transmitting at least the first and second parameters of said signal and the corresponding emitter pointer to data processing apparatus; and wherein said means for addressing said RAM by using its first and second parameters to read the contents of a principally addressed storage location further comprises means for addressing said RAM to read the contents of a predetermined array of other storage locations that correspond to neighboring values of said first and second parameters; and wherein said means for writing further comprises means for writing said fresh emitter pointer into also at least one of said other storage locations of said predetermined array; and wherein said means for transmitting further comprises means for transmitting also the address of said other storage locations into which said fresh emitter pointer was written.