RADAR RECEIVING DEVICE AND RADAR INCLUDING SUCH A DEVICE

Abstract

Radar apparatus for processing a received signal having a carrier frequency f0 includes means for directing the received signal in parallel into first and second channels. A first filter in the first channel bandpass filters the received signal and is centered at a frequency f1 equal to f0 +Δ1 f. The first filter provides an output signal having a central frequency f0 +Δ1 f/2. A second filter coupled in the second channel bandpass filters the received signal and is centered at f2 =f0 +Δ2 f. The second filter thus provides an output signal having a central frequency f0 +Δ2 f/2. A first mixer in the first channel mixes the first filter output with a signal f1 =f0 +Δ1 f/2 to extract the carrier frequency of the first channel. Likewise, a second mixer in the second channel mixes the second filter output signal with a signal f2 =f0 +Δ2 f/2 to also extract the carrier frequency in the second channel. The ouputs of both mixers are then passed to a processing and exploitation device to manipulate the signals to arrive at the appropriate range and/or velocity information.

Source: Google Patents

35 USC §181 Secrecy Order

Inventor

• 1HENRI POINSARD

Technology Domains

Click a domain to browse all patents in this category.