Abstract
Although radiation power minimization is the most important method for an advanced stealth aircraft to achieve the low probability of detection (LPD) performance against the opposite passive detection system (PDS), it is not always effective when the performance of PDS is advanced. In a target tracking scenario, an interference tactic is proposed in this paper to keep the airborne radar in an LPD state. Firstly, this paper introduces the minimization radiation power design of airborne radar based on the distance between the radar and the target, and introduces the minimization radiation power design of the airborne jammer based on the predicted detection probability of the opposite PDS. Then, after consulting the most commonly used constant false alarm rate (CFAR) technologies in passive detection systems, including the cell average CFAR, the greatest of CFAR, the smallest of CFAR and the ordered statistic CFAR, this paper analyzes their relationships and points out the way of interference. Finally, based on the constraints, not only including the predicted detection probabilities of airborne radar and opposite PDS, respectively, but also including the time synchronization which is necessary to avoid the leaked interference power generated by airborne jammer jamming the airborne radar echoes from the target, this paper establishes a math model to minimize the total interference power of airborne jammer without interfering target tracking. Simulation results show that the proposed model is effective.
Highlights
The Low probability of intercept (LPI) technology is used to protect the airborne radar from the threat of the opposite passive detection system (PDS)
Different from existing literatures, this paper comprehensively considers airborne radar and jammer and proposes a tracking while jamming tactic, which is helpful for airborne radar to maintain low probability of detection (LPD) state against advanced PDS
According to the probability of detection required by the radar receiver, this section shows that the combination of tracking while jamming in Figure 1 is an effective method to protect the airborne radar platform from the threat of the opposed advanced PDS
Summary
The Low probability of intercept (LPI) technology is used to protect the airborne radar from the threat of the opposite passive detection system (PDS). The LPD of airborne radar has been studied to study how to control its radiant power, and to study how to control its irradiation interval and dwell time on target In those documents, Krishnamurthy (2005) proposed a computationally efficient dynamic emission control and management algorithm to minimize the threat to the platform caused by the opposite. According to the probability of detection required by the radar receiver, this section shows that the combination of tracking while jamming in Figure 1 is an effective method to protect the airborne radar platform from the threat of the opposed advanced PDS.
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