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S-mode selective calling arrangement method

A mode and formula technology, applied in the field of S-mode selective call arrangement, can solve problems such as no solutions are given, and achieve the effect of improving inquiry efficiency

Active Publication Date: 2017-08-22
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

[0004] ICAO Doc9684 puts forward the guiding ideology of arranging inquiries by sorting multiple S-mode targets in the same beam according to distance, but does not give a specific solution

Method used

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  • S-mode selective calling arrangement method

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Experimental program
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specific Embodiment 1

[0034] A kind of S mode selective call arrangement method, concrete method steps are:

[0035] Step 1, extract all targets of the current beam from the query list;

[0036] Step 2, select the farthest target as the first target of the first group;

[0037] Step 3, according to the order from far to near, according to R n-1 -R n ≥S select the second target and judge whether TR is satisfied n >(n-1)(TRPS / TRPL+TSPA), if satisfied, go to the next step, if not, continue to choose until there is no target to choose from among all the targets in the current beam, then go to the next step;

[0038] Step 4: Determine whether the sum of the query times of all currently selected targets is less than a beam dwell time T sum , if yes, go to the next step; if not, give up the last selected target and go to step seven;

[0039] Step 5, repeat steps 3 to 4, select the remaining targets until all the targets satisfying the two formulas in step 3 and the beam dwell time condition in step 4...

specific Embodiment 2

[0056] On the basis of the specific embodiment 1, the method further includes: marking the unselected targets among all the targets in the current beam for priority inquiry in the next inquiry.

specific Embodiment 3

[0058] On the basis of the specific embodiment 2, when the priority inquiry is made, the inquiry is performed directly, and it is no longer judged whether it satisfies the two formulas in the above step 3 and the condition of the beam dwell time in the step 4.

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Abstract

The invention provides an S-mode selective calling arrangement method. All the targets of the current beam are extracted from an inquiry list to be grouped and arranged, and all the targets of one time of selective calling arrangement are determined by considering the distance difference between the two adjacent targets of each group and the fact that the electromagnetic wave round trip time of the last target of each group is greater than the sum of the duration time of all the previous response pulses and the sum of the inquiry time of all the targets of all the groups is less than the residence time of one wave beam; and the target message transmitting moment of each selected target is calculated and the target message transmitting moment of all the selected targets of one selective calling inquiry period is acquired, and a time table is formed according to the target message transmitting moment of all the selected targets to perform inquiry pulse arrangement to be transmitted to a transmitter. Compared with the methods in the prior art, the inquiry arrangement method is given for multiple targets in one S-mode selective calling period so as to be effective and intelligent; meanwhile, the influence of the factors of the inquiry repetition frequency, the target number and the distance difference between the targets is considered so that the inquiry efficiency can be enhanced in the aspects of time and space.

Description

technical field [0001] The invention relates to an S-mode selective call arrangement method, in particular to an S-mode selective call arrangement method applicable to the secondary radar field of air control. Background technique [0002] S mode is an inquiry mode of Secondary Surveillance Radar (SSR). Compared with the traditional A / C inquiry mode, S mode conducts roll call (selective) inquiry according to the address of each aircraft (each aircraft address is unique), In this way, the aircraft that are named will respond, and the aircraft that are not named will not respond. The traditional A / C interrogation mode is to transmit the same interrogation format to all aircraft in the beam, which will cause synchronous crosstalk and asynchronous interference. Therefore, Mode S will be more widely used in SSR. [0003] The S mode uses all-call inquiry to obtain the address of the aircraft first, and then uses selective call (referred to as selective call) to perform roll call ...

Claims

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Application Information

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IPC IPC(8): G01S13/76
CPCG01S13/765
Inventor 王强
Owner 四川九洲空管科技有限责任公司
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