УДК 621.396.96 Bistatic raDar: maximUm range anD effectiVe area V. i. <...> V. stukalova Voronezh State University A monostatic radar refers to a radar system which has the transmitter and receiver located at the same site. <...> Maximum range and effective area are important characteristics of monostatic radar. <...> Another types of radar is bistatic radar; a bistatic radar configuration employs a single transmitter and a single receiver that are not collocated. <...> These include: the type and intensity of interferences at the input of receiver; the required efficiency of target detection and the accuracy in measuring their parameters; the duration of processing the received signal, as well as a number of other factors [2]. <...> The effective area of bistatic radar is quite often determined by characteristics of attainable accuracy of measurements [ ] or by target detection characteristics [3, 4]. <...> In this case, a certain level of signal-to-noise ratio is specified. <...> This is necessary for target detection with a required probability of correct detection at a given probability of false alarms; or for measurement of target parameters with a specified error variance of measurement. <...> In this case, the space region is assumed to be an effective area of bistatic radar if a target with a specified RCS remains in this area and the signal-to-noise ratio at the receiver is not less than a certain level [4]. <...> The form and size of the effective area of ≥ PR min where PT bistatic radar depends both on receiver sensitivity (i.e. on PR min ), as well as on other aspects such as: the power of the emitted signal; RCS of target; the directional diagram of the receiving and transmitting antennas; atmospheric attenuation of electromagnetic waves; reflection of electromagnetic waves from the ground surface, as well as other factors [ , 2, 5]. <...> Electromagnetic waves emitted by the transmitter have a spherical wavefront, limited by the directional diagram of the transmitting antenna at a sufficiently large distance from the transmitter. <...> Therefore, the power flux density of the direct electromagnetic wave in the vicinity of a target is: PG = P g R 4 1p , 2 T T factor of the transmitting antenna. <...> It is known [2, 5] that the directivity factor, g, is an output power and gT of any antenna and its gain coefficient, G, are related by the simple formula: G gA where <...>