Patent ID: 8253622
Filing Date: 2012-08-28
Classification: G01S

Abstract:
1. A device for improved directional estimation and/or decoding by means of secondary radar signals, which comprises: at least one array (A) comprising M antenna elements (AE); a low noise linear amplifier (LNA) and first bandpass filter (F a first linear amplifier (V a mixer (M) connected to the first linear amplifier (V a second linear amplifier (V a first analog-to-digital converter (AD a configurable signal processor (FPGA) connected to the first analog-to-digital converter (AD a processing unit (CPU) connected to the configurable signal processors (FPGA), said unit collecting the data (DD) from all antenna elements (AE) and carrying out the directional estimation by means of a method based on a subspace in which the various gains, phase differences and coupling of antenna elements in the analog input devices connected to the M antenna elements (AE) are taken into account both in estimating the direction and in the detection of received radio data.