Method and device for environment detection by means of a frequency-modulated multi-ramp duration bar signal

摘要

Device (600) for environment detection comprising a radar device (605), which comprises a signal generating device (200) for generating a transmission signal (280) in the form of a frequency-modulated continuous wave signal and a transmitting and receiving device (610) for transmitting the transmission signal (280) and for receiving a received signal resulting from the reflected transmission signal; and an evaluation device (640) for evaluating the received signal and deriving information about spatial regions and / or objects in the environment; wherein the signal generating means (200) comprises a control means (240), two controllable ramp signal generating means (202-1, 202-2) and a switching means (270); wherein outputs of the ramp signal generating means (202-1, 202-2) are fed to the switching means (270), and wherein the control means (240) is connected to the ramp signal generating means (202-1, 202-2) and the switching means (270), and the Control device (240) is configured to alternately program and start the ramp signal generating means (202-1, 202-2) and to thereby temporally correlate the switching means (270) to control that of the ramp signal generating means (202-1, 202-2) generated ramp signal portions of the output signals (224-1, 224-2) of the ramp signal generating means (202-1, 202-2) abut an output of the switching means (270).