초록 ▼

A method and apparatus which perform efficient projection of 4-dimensional data (3 spatial and 1 time dimension) onto planar grids are described. Multiple frames of data are drawn from a limited time history data buffer and projected onto a planar grid, which need not be flat, defined in its own coo

A method and apparatus which perform efficient projection of 4-dimensional data (3 spatial and 1 time dimension) onto planar grids are described. Multiple frames of data are drawn from a limited time history data buffer and projected onto a planar grid, which need not be flat, defined in its own coordinate system. Higher dimensional data structures can also be formed from multiple projection grids. Measurement data from multiple data frames is projected into the planar grid such that distance out of plane is the z-dimension. Computational efficiency is achieved by processing only those data samples that are relevant to the planar grid. To be considered relevant, the impulse response of the sensor's measurement rays must cross the planar grid. Samples of relevant rays must also map onto the planar grid's coordinate mesh to be relevant. Multiple data measurements may determine the planar grid's final amplitude result. Amplitudes at the planar grid coordinates are determined by the most relevant measurement(s) of those within the extent of the measurement system's impulse response.

대표청구항 ▼

1. An apparatus for use in a radar system for transforming data into planar grid for display, said apparatus comprising:a plurality of sensors for collecting data; a frame generator which receives data collected by the sensors and transforms the data into individual data frames for further processin

1. An apparatus for use in a radar system for transforming data into planar grid for display, said apparatus comprising:a plurality of sensors for collecting data; a frame generator which receives data collected by the sensors and transforms the data into individual data frames for further processing; a database which receives the data frames from said frame generator; an input device for receiving requests from a user for a planar grid of interest; a CPU which, in response to instructions received from the input device, (i) requests data frames of interest from said database for display, (ii) transforms the data frames of interest to a common coordinate system, (iii) filters the data frames of interest for relevance to the planar grid of interest, and (iv) marks data frames identified as relevant; and a display for presenting the planar grid of interest based on the data frames marked as relevant.