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A system and method for detecting a target object through foliage includes a transmitter for generating a low-frequency electromagnetic signal. The signal is directed toward a potential target object for reflection from the potential target object. The system further includes a plurality of mutually

A system and method for detecting a target object through foliage includes a transmitter for generating a low-frequency electromagnetic signal. The signal is directed toward a potential target object for reflection from the potential target object. The system further includes a plurality of mutually dispersed sensors for receiving the reflected signal from the target object. A mechanism is provided to determine the relative locations of the sensors. Signal information from the received signals is sent to a central processor. The central processor inputs the signal information into a beamformer algorithm such as the Maximum Likelihood Method (MLM) to reduce sidelobe ambiguities and resolve the true location of the target from the signal information.

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A system and method for detecting a target object through foliage includes a transmitter for generating a low-frequency electromagnetic signal. The signal is directed toward a potential target object for reflection from the potential target object. The system further includes a plurality of mutually

A system and method for detecting a target object through foliage includes a transmitter for generating a low-frequency electromagnetic signal. The signal is directed toward a potential target object for reflection from the potential target object. The system further includes a plurality of mutually dispersed sensors for receiving the reflected signal from the target object. A mechanism is provided to determine the relative locations of the sensors. Signal information from the received signals is sent to a central processor. The central processor inputs the signal information into a beamformer algorithm such as the Maximum Likelihood Method (MLM) to reduce sidelobe ambiguities and resolve the true location of the target from the signal information. al having a characteristic digital feature which makes it possible to determine a digital low-frequency signal from the digital intermediate signal, and the digital low-frequency signal is determined from the digital intermediate signal using the characteristic digital feature.2. A method for analog/digital converting of at least one analog low-frequency signal according to claim 1, wherein the step of generating the analog intermediate signal comprises a linear or non-linear operation being processed on the analog low-frequency signal and the analog high-frequency signal.3. A method for analog/digital converting of at least one analog low-frequency signal according to claim 2, wherein the linear or non-linear operation comprises one of the following steps:adding the analog low-frequency signal to the analog high-frequency signal,subtracting the analog low-frequency signal from the analog high-frequency signal,multiplying the analog low-frequency signal with the analog high-frequency signal,convolving the analog low-frequency signal with the analog high-frequency signal.4. A method for analog/digital converting of at least one analog low-frequency signal according to claim 1, wherein the characteristic digital feature is at least one of the following features:the amplitude of the digital intermediate signal,the frequency of the digital intermediate signal,the phase of the digital intermediate signal,the pulse of the digital intermediate signal,a change of the amplitude of the digital intermediate signal,a change of the frequency of the digital intermediate signal,a change of the phase of the digital intermediate signal.a change of the pulse of the digital intermediate signal.5. A method for analog/digital converting of at least one analog low-frequency signal according to claim 1, wherein the analog high-frequency signal is a sine wave signal.6. A method for analog/digital converting of at least one analog low-frequency signal according to claim 5, wherein the analog high-frequency signal has a frequency of about 5000 Hz.7. A method for analog/digital converting of at least one analog low-frequency signal according to claim 1, wherein the analog/digital converter is used in conjunction with a sound card.8. A method for analog/digital converting of at least one analog low-frequency signal according to claim 7, wherein at least one analog output signal of the sound card is used as the at least one analog high-frequency signal.9. A method for analog/digital converting of at least one analog low-frequency signal according to claim 7, whereinan analog output signal of the sound card is transformed into an isolated output signal of the sound card in order to isolate the ground potential of the output of the sound card, andthe isolated output signal of the sound card is used as the high-frequency signal.10. A method for analog/digital converting of an analog low-frequency signal according to claim 1, whereina plurality of analog low-frequency signals is provided,a plurality of analog high-frequency signals is provided,the analog intermediate signal is generated using the analog low-frequency signals and the analog high-frequency signals,wherein the analog intermediate signal has characteristic analog features which make it possible to determine each analog low-frequency signal out of the plurality of the analog low-frequency signals from the analog intermediate signal,the digital intermediate signal has characteristic digital features which make it possible to determine a plurality of digital low-frequency signals from the digital intermediate signal, andthe digital low-frequency