Secondary radar SuperMode inquiry coding implementation method

A technology of secondary radar and its implementation method, which is applied in the directions of radio wave reflection/re-radiation, utilization of re-radiation, and measurement devices, etc., which can solve the problems of reduced recognition performance and recognition efficiency, inability to guarantee effective target recognition, and reduced detection probability of equipment, etc. problems, to achieve the effect of improving combat skill indicators, improving reliability and identification efficiency

Pending Publication Date: 2022-03-04
四川九洲空管科技有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It can be seen that when several different modes of interrogation are carried out in the secondary radar identification friend or foe system using a mechanical scanning antenna, if the antenna rotation cycle is alternated, all types of targets cannot be quickly acquired within one antenna rotation cycle, resulting in the identification of the equipment. Reduced performance and recognition efficiency
However, the interleaved interrogation of adjacent interrogation cycles will greatly reduce the number of interrogations of each mode within the range of the working beam, which will greatly reduce the detection probability of the equipment, and even cannot guarantee the effective identification of the target.

Method used

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  • Secondary radar SuperMode inquiry coding implementation method
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  • Secondary radar SuperMode inquiry coding implementation method

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Embodiment 1

[0046] Aiming at the problems of reduced recognition probability and low reliability in the existing secondary radar detection process in which multiple different types of modes are used for interrogation, this embodiment optimizes and improves to solve this technical problem.

[0047] Specifically, such as figure 1 As shown, this embodiment provides a method for implementing secondary radar SuperMode query encoding, including the following process:

[0048] S1: Generate a synchronous pulse signal, the synchronous pulse signal is a TRIG pulse;

[0049] S2: Generate SuperMode encoding timing, embed any two of S mode, SIF mode, M4 and M5 into the same inquiry cycle to determine the SuperMode inquiry mode, set the time interval between the inquiry encoding pulses of two different modes, and ensure The response signal triggered by the query code of the former mode is located after the query code of the latter mode; in this embodiment, the SIF mode is one of M1, M2, M3 / A and MC; ...

Embodiment 2

[0101] This embodiment provides a secondary radar SuperMode interrogation coding implementation method, refined, using S mode + SIF mode in the pulse signal of the interrogation mode, which can quickly obtain the S mode and SIF mode of different targets within the working beam range Respond to information, complete target identification efficiently, and maximize the length of each mode window.

[0102] Specifically, such as image 3 As shown, when using the interrogation mode composed of two kinds of encoding pulses of S mode + SIF mode, the encoding pulse of SIF mode lags behind the encoding pulse of S mode; and also includes the zero-distance starting pulse sequence, and the zero-distance starting pulse lags Synchronous inversion pulse of the encode pulse.

[0103] In this embodiment, it has the following timing relationship:

[0104] a) T1 is the delay of the coding sequence and the system synchronization signal, which is 10us in this embodiment;

[0105] b) When SIF inq...

Embodiment 3

[0111] This embodiment provides a secondary radar SuperMode inquiry coding implementation method, refined, the M4+SIF mode is used in the pulse signal of the inquiry mode, and the M4 and SIF mode response information of different targets can be quickly obtained within the working beam range , complete target recognition efficiently, and maximize the length of each mode window.

[0112] Specifically, such as Figure 4 As shown, when the interrogation mode composed of two encoding pulses of M4+SIF mode is used, the encoding pulse of SIF mode lags behind the encoding pulse of M4; ahead of the SIF-mode encoding pulse; and a sequence of zero-distance start pulses lagging behind the SIF-mode encoding pulse.

[0113] In this embodiment, it has the following timing relationship:

[0114] a) T1 is the time delay of encoding timing and system synchronization signal, which is 10us in the present invention;

[0115] b) When the SIF mode query is embedded in the M4 query, when the M4 qu...

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Abstract

The invention relates to the technical field of secondary radar inquiry detection, in particular to a secondary radar SuperMode inquiry coding implementation method, which comprises the following steps of: generating a synchronous pulse signal; generating a SuperMode coding time sequence, embedding inquiry codes of two different modes into an inquiry period, setting a time interval between two inquiry code pulses, and ensuring that a response signal triggered by the inquiry code of the previous mode is behind the inquiry code of the next mode; and the transmitting gate is used for generating an inquiry signal and an inquiry sidelobe suppression signal and transmitting an inquiry coded pulse in an inquiry period to complete inquiry. According to the method, more response information can be received in one inquiry period, so that the problems that the identification probability is reduced, the false alarm rate is high, the detection precision is reduced and the like when several different types of modes are used for alternate inquiry are solved, and the reliability and the identification efficiency of a secondary radar identification friend or foe system are improved; and thus, the battle technical indexes of the secondary radar identification friend or foe system are improved.

Description

technical field [0001] The invention relates to the technical field of secondary radar inquiry and detection, in particular to a method for implementing secondary radar SuperMode inquiry encoding. Background technique [0002] When the secondary radar identification friend or foe system is working, the interrogator transmits an interrogation signal in the form of a directional beam through the interrogation antenna. After receiving the interrogation signal, the transponder transmits a response signal. Collaborative work to complete the identification of the target friend or foe. [0003] The information exchange between the interrogator and the transponder is realized by performing pulse coding on the uplink query signal and the downlink response signal. Different query pulse coding formats correspond to different query modes. The common types of query modes are: [0004] a) SIF mode: M1, M2, M3 / A, MC; [0005] b) S mode; [0006] c) M4; [0007] d) M5. [0008] The tra...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S13/74G01S13/76G01S13/78
CPCG01S13/74G01S13/76G01S13/765G01S13/78
Inventor 刘娟李正勇游凌
Owner 四川九洲空管科技有限责任公司
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