Digital intermediate frequency single pulse orientation method

A digital intermediate frequency and single pulse technology, applied in the field of digital intermediate frequency single pulse direction finding, can solve the problems of low accuracy, slow speed, and inability to generate economic benefits, and achieve the effect of fast direction finding, fast speed and low power consumption

Active Publication Date: 2011-11-23
中航空管系统装备有限公司
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Problems solved by technology

However, the accuracy of the existing airborne anti-collision system to detect the above parameters is not high, the speed is slow, and it cannot produce high economic benefits

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Embodiment Construction

[0032] In order to make the technical means, creative features, goals and effects achieved by the present invention easy to understand, the present invention will be further described below in conjunction with specific illustrations.

[0033] In order to realize effective tracking, fast and accurate measurement of the orientation of the intruder, the present invention provides a digital intermediate frequency monopulse direction finding method, which is implemented based on an airborne collision avoidance system receiver (i.e. TCAS receiver), and the TCAS receiver includes a radio frequency receiving front end and digital processing board.

[0034] see figure 1 , the airborne collision avoidance system involved in the present invention, its antenna is a four-element unit antenna, including a first element unit A, a second element unit B, a third element unit C, and a fourth element unit D, and the four element units Arranged in a square. Furthermore, the length of the diagon...

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Abstract

The invention discloses a digital intermediate frequency single pulse orientation method. The method is implemented on the basis of a receiver of an onboard anti-collision system, an antenna of the onboard anti-collision system is the antenna of a four-radar unit, and the four-radar unit is arranged squarely. The method comprises the following steps of: (1) sampling bandpass; (2) performing digital phase discrimination; (3) automatically calibrating phase differences; and (4) mapping phase orientation. By the method, the onboard anti-collision system has correct orientation, high speed, small volume, low power consumption and low cost, has obvious advantages in market competition and can produce high economic benefits.

Description

technical field [0001] The invention relates to an airborne collision avoidance system, in particular to a digital intermediate frequency single pulse direction finding method. Background technique [0002] In recent years, as an important tool for detecting targets, radar has played an increasingly important role in military and civilian fields. Its main task is to detect, track and measure useful targets from the air, ground or water in the background of noise, clutter and interference. Among them, the precise azimuth measurement of the target is an important part of target signal processing, and it is also a key issue in signal processing. [0003] The monopulse system radar is a relatively advanced radar system. The monopulse direction finding is realized by the multi-channel receiving technology. It uses several independent receiving branches to receive the echo signals of the target signals at the same time, and then these The parameters of the signals are compared t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S13/06G01S13/93
Inventor 张俊强丁勇飞毛继志张海辉沈凯虹吴鑫炜郭鸿滨
Owner 中航空管系统装备有限公司
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