Land mine detection is an important and yet challenging problem and one that remains to bernsolved. Ground Penetrating Radar (GPR) is an effective sensor to detect land mines that arernmade of plastic or have low metal content.rnGPR operates by first transmitting an impulse signal down to the mine field, second receives thernsignals reflected from the different layers of the ground and processes the received image to giverna revealing picture of the size and shape of a landmine (metal or plastic) and where exactly it isrnlocated.rnIn electromagnetic wave propagation modeling, a multilayer transmission line technique is applied.rnIt considers different soil types and targets of different diameters which are buried at differentrndepths. Signal processing algorithms are implemented for clutter reduction. Preprocessingrntechniques such as DC Offset removal, Antenna cross talk, Noise Reduction (using weightedrnmoving average and exponential moving average) and Background clutter reduction. GPR signalrnprocessing algorithms apply processing in time domain; therefore an advanced signal processingrntechnique which is a 2D (time and frequency) view of a signal is required to see a more revealingrnpicture.rnAfter preprocessing steps have been accomplished then further process with advanced signalrnprocessing techniques to get a more revealing picture of the energy concentration of the buriedrntarget at different time instants. Joint time-frequency transforms were developed for the purposernof characterizing the time-varying frequency content of a signal. The best-known time-frequencyrnrepresentation of a time signal dates back to Gabor and is known as the short-time Fourier transformsrn(STFT). It is basically a moving window Fourier transforms. By examining the frequencyrncontent of the signal as the time window is moved, a 2D time-frequency distribution called thernspectrogram is generated. The spectrogram contains information on the frequency content of thernsignal at different time instances.rnConsidering a real GPR data [1] where target objects and non target objects or clutters which arernburied at different positions and after passing through Matlab algorithms, a more revealing picturernis created.rnKeywords; land mine detection, GPR system, demining.