The range resolution of a radar system depends on a number of factors,rnsuch as the duration and shape of the transmitted radar pulse, thernimpulse response of the receiver matched filter, the antenna system,rncharacteristics of some transmitting and receiving equipment, etc.rnIn this study, the theoretical range resolution of the stratospheretropospherernCST) radar system having instrumental imperfections isrnconsidered. The imperfections considered are the width and shapernof the transmitted pulse and the associated impulse response of thernreceiver matched filter which is assumed to be always matched to therntransmitted pulse. All other parameters that influence range resolutionrnare assumed to be ideal. A simplified model of an ST radar systemrnsuitable for resolution studies is presented and this is used to simulaternatmospheric profiles