Method for simultaneously tracking and jamming based on RF stealth

A technology of radio frequency stealth and edge tracking, which is applied in the direction of utilizing re-radiation, radio wave reflection/re-radiation, measuring devices, etc., can solve problems such as the inability to eliminate the threat to the survival of airborne radar platforms, and achieve improved radio frequency stealth performance and resource assurance , Minimize the effect of emitted energy

Active Publication Date: 2018-10-02
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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Problems solved by technology

However, with the development of miniaturized high-gain passive detection systems, only using airborne radar radiated energy minimization tech

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  • Method for simultaneously tracking and jamming based on RF stealth
  • Method for simultaneously tracking and jamming based on RF stealth
  • Method for simultaneously tracking and jamming based on RF stealth

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Embodiment Construction

[0048] The present invention will be further explained below in conjunction with the accompanying drawings.

[0049]The radio frequency stealth-based jamming-while-tracking method of this embodiment is aimed at the following electronic countermeasure scenarios: an enemy plane is equipped with a passive detection system with sidelobe detection performance, and an aircraft of our side is equipped with a radar and interfering devices. Assume that our airborne radar has detected the enemy's signal and is in the state of tracking the target; the enemy aircraft intercepts the radar signal of our aircraft through the passive detection system and CFAR detection; our airborne radar adjusts the sampling interval adaptively to make the tracking The accuracy is at a small value that satisfies the tracking effect, thereby reducing the radar radiation energy; at the same time, the jamming equipment of our aircraft shields our radar signals by sending jamming signals to the enemy aircraft, s...

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Abstract

The invention discloses a method for simultaneously tracking and jamming based on RF stealth. The method comprises the steps of: firstly, analyzing a relationship between a radar detection distance and an interception distance of an enemy passive system, and acquiring a transmission power range required by a radar for detecting a target on the premise of ensuring that a radar signal is not intercepted; secondly, adopting a Kalman filtering and covariance control method, increasing a radar interval to reduce radiant energy on the premise of ensuring radar tracking precision; thirdly, analyzinga relationship between a detection probability of a constant false alarm rate (CFAR) detector and power subjected to blanket jamming, so as to obtain a jamming power boundary condition of effective jamming for the enemy passive system; and analyzing a relationship between detection performance of the CFAR detector and a number of jamming pulses, reducing the number of jamming pulses on the premiseof ensuring the jamming effect, and making the jamming pulses do not overlap with radar echoes. The method provided by the invention reduces the radiation energy under the condition of satisfying theradar detection performance and the jamming shielding performance, and improves the RF stealth performance of the airborne radar.

Description

technical field [0001] The invention relates to a tracking and interference method based on radio frequency stealth, which belongs to the technical field of radar radio frequency stealth. Background technique [0002] Airborne radar radiation energy minimization design is one of the important technical means for advanced stealth aircraft to resist enemy passive detection system and realize radio frequency stealth performance. However, with the development of miniaturized high-gain passive detection systems, only the minimization of airborne radar radiation energy cannot eliminate the survival threat of enemy advanced or networked passive detection systems to airborne radar platforms. In order to reduce the threat posed by the enemy's passive detection system in the process of airborne radar tracking enemy targets, and reduce the radiated energy of airborne radar and jamming, the use of airborne radar and jamming to work together can effectively improve the radio frequency st...

Claims

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Application Information

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IPC IPC(8): G01S7/38G01S13/66
CPCG01S7/38G01S13/66
Inventor 汪飞代赛陈军周建江
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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