Offset frequency homodyne ground penetrating radar

摘要

Systems and methods involve generating a baseband signal, up-converting the baseband signal to a radar signal frequency, filtering a lower sideband of the up-converted signal, and transmitting the filtered up-converted signal. Systems and methods also involve receiving a return signal, down-converting the return signal using a signal having a frequency offset from the up-converted signal, filtering the upper sideband of the down-converted return signal, and producing a baseband return signal.

主权项

1. A radar detection method, comprising:
generating a baseband signal; up-converting the baseband signal to a radar signal frequency; filtering a lower sideband of the up-converted signal; transmitting the filtered up-converted signal, wherein generating, up-converting, filtering the lower sideband, and transmitting are implemented by a transmit section of a radar apparatus; receiving a return signal; down-converting the return signal using a signal having a frequency offset from the up-converted signal; filtering the upper sideband of the down-converted return signal; and producing a baseband return signal, wherein receiving, down-converting, filtering the upper sideband, and producing are implemented by a receive section of the radar apparatus; wherein the frequency offset is a predetermined frequency related to a width of a sideband filter used for filtering the upper sideband of the down-converted return signal.