Operating method of a detection radar following two Doppler sub-modes and associated detection radar

An operating method of a target detection radar following a Doppler mode, the method comprising the implementation of multiple recurrences of a signal emission/receipt step, with each nth recurrence of said step comprising the following sub-steps:

• generation of two consecutive pulses associated with a first Doppler sub-mode and a second Doppler sub-mode, said Doppler sub-modes defining different energy balances;
• emission of pulses in different frequency bands according to different emission directions;
• receipt of pulse echoes in a common time window;
• preprocessing of received echoes in relation to the first Doppler sub-mode to determine at least one clutter zone;
• preprocessing of received echoes in relation to the second Doppler sub-mode outside the or each clutter zone determined in relation to the first Doppler sub-mode;
• the method further comprising the following step:
• implementation of an extraction processing from a preprocessing result of received echoes in relation to the second Doppler sub-mode.