Effects of receiver filtering on hot clutter mitigation
- 20 January 2003
- conference paper
- Published by Institute of Electrical and Electronics Engineers (IEEE)
Abstract
A typical jammer signal model is that of a jammer transmitting broad band white noise. This signal is then filtered (analog and digitally) prior to entering the adaptive processor. Among other effects, this band limits the signal and affects the correlation function of the jammer waveform as seen by the adaptive architecture. We illustrate some of the effects of varying receiver filters on the mitigation of terrain-scattered interference (otherwise known as hot clutter). We examine five different correlation functions, two of which are band limited, and three of which are limited in time. The results demonstrate that if the correlation function of this waveform has a finite time extent, then the ability to mitigate hot clutter is significantly reduced. This demonstrates that scatterers of long relative time delay (resulting in a small amount of correlation) still contribute significantly to hot clutter cancellation. This result may, for example, impact the choice of pulse compression used in a radar system, since pulse compression prior to adaptive processing will impact the resulting correlation function.Keywords
This publication has 4 references indexed in Scilit:
- The ARPA/NAVY Mountaintop Program: adaptive signal processing for airborne early warning radarPublished by Institute of Electrical and Electronics Engineers (IEEE) ,2002
- Cancellation of diffuse jammer multipath by an airborne adaptive radarIEEE Transactions on Aerospace and Electronic Systems, 1995
- Cancellation of specular and diffuse jammer multipath using a hybrid adaptive arrayIEEE Transactions on Aerospace and Electronic Systems, 1991
- On the use of windows for harmonic analysis with the discrete Fourier transformProceedings of the IEEE, 1978