Radar reception device, radar apparatus and radar reception signal displaying method

摘要

A radar reception device is provided. The device includes a reception signal acquirer, a signal processor, a PPI-scope generator, an A-scope generator, a display output unit, and a user interface. The reception signal acquirer acquires, in an Rθ-coordinate system, a reception signal received by an antenna that rotates at a predetermined cycle. The signal processor performs signal processing on the reception signal in the Rθ-coordinate system according to a distance, and outputs the processed signal in the Rθ-coordinate system. The PPI-scope generator converts the processed signal from the Rθ-coordinate system into an XY-orthogonal coordinate system and generates a radar image in a PPI-scope. The A-scope generator generates a radar image where the reception signal before being signal-processed is illustrated in an A-scope. The display output unit displays the PPI-scope radar image and the A-scope radar image on a display unit simultaneously. The user interface accepts a user input.

主权项

1. A radar reception device, comprising:
a reception signal acquirer configured to acquire, in an Rθ-coordinate system, a reception signal received by an antenna that rotates at a predetermined cycle; a signal processor configured to perform signal processing on the reception signal in the Rθ-coordinate system by applying a threshold on a signal level of the reception signal, and output the processed signal in the Rθ-coordinate system; a PPI-scope generator configured to convert the processed signal from the Rθ-coordinate system into an XY-orthogonal coordinate system and generate a PPI-scope radar image in a PPI-scope; an A-scope generator configured to generate an A-scope radar image where both the reception signal before being signal-processed by the signal processor and a plurality of threshold curves superimposed on the reception signal are illustrated in an A-scope, the plurality of threshold curves showing a relation between the threshold and the reception signal according to a distance from the antenna; a display output unit configured to display the PPI-scope radar image and the A-scope radar image on a display unit simultaneously; and a user interface configured to accept a user input including a user selection of one of the plurality of threshold curves illustrated in the A-scope, wherein the signal processor performs the signal processing by using the threshold curve selected via the user interface.