CN113050052A - Multi-target response simulation method for friend or foe identification system - Google Patents
Multi-target response simulation method for friend or foe identification system Download PDFInfo
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Abstract
The invention discloses a multi-target response simulation method for an identification system of friend or foe, which comprises the following steps: s1: receiving the inquiry signal through a receiver, and decoding the inquiry signal to obtain a decoding trigger signal; s2: obtaining distance delay values of a plurality of targets according to the decoding trigger signal, and simultaneously carrying out distance delay counting, wherein the distance delay values of the plurality of targets are obtained by calculating the preset distances of the plurality of targets; s3: after each distance delay counting, comparing whether the distance delay counting value is consistent with the distance delay values of all targets or not; s4: when the range delay count value coincides with the range delay value of one target, the response flow of the target is executed while counting the number of times of response, otherwise, step S3 is repeated until the number of times of response count value equals the number of all targets. The invention can respond to a plurality of targets and avoid responding to two or more targets at the same time.
Description
Technical Field
The invention relates to the technical field of friend or foe identification, in particular to a multi-target response simulation method of a friend or foe identification system.
Background
The friend or foe identification system comprises two parts, namely inquiry equipment and response equipment, wherein the inquiry equipment can transmit inquiry signals, the response equipment carries out analysis and calculation after receiving the inquiry signals, important information such as codes, positions and heights of the response equipment can be calculated after the calculation is passed, and friend or foe attributes, positions, heights and the like of corresponding targets can be calculated after the inquiry equipment receives the response signals.
In military environments where countermeasures are becoming increasingly intense, modern information wars are increasingly demanding on friend-foe identification systems. In order to master the transient battlefield situation in time, the enemy and my identification system needs to quickly and accurately identify the enemy and my attributes of a plurality of targets in the same batch, so that misjudgment is reduced to the minimum extent, and a basis is provided for command decision making. Therefore, the friend or foe identification system has high identification probability, anti-interference performance and strong multi-target identification processing capacity.
The existing friend or foe identification response simulation equipment can only simulate the response function of a single target, cannot realize the effect of simulating the response of a plurality of targets through single response simulation equipment, and cannot achieve the purpose of testing and verifying the multi-target identification processing performance of inquiry equipment. With the continuous development and evolution of the informatization war form, the processing performance requirements of the enemy and my identification system are also continuously improved. Therefore, there is a pressing need for systematic testing and validation of the multi-target identification processing capabilities of interrogation devices to ensure that they will perform their intended functions and efficiencies after formal delivery.
Disclosure of Invention
The invention aims to provide a multi-target response simulation method for an identification system of friend or foe, which can respond to a plurality of targets and avoid responding to two or more targets at the same time.
In order to solve the technical problems, the invention adopts a technical scheme that: the method for simulating multi-target response of the friend or foe identification system comprises the following steps:
s1: receiving an inquiry signal through a receiver, and decoding the inquiry signal to obtain a decoding trigger signal;
s2: obtaining distance delay values of a plurality of targets according to the decoding trigger signal, and simultaneously performing distance delay counting, wherein the distance delay values of the plurality of targets are obtained by calculating the preset distances of the plurality of targets;
s3: after each distance delay counting, comparing whether the distance delay counting value is consistent with the distance delay values of all targets or not;
s4: when the range delay count value coincides with the range delay value of one target, the response flow of the target is executed while counting the number of times of response, otherwise, step S3 is repeated until the number of times of response count value equals to the number of all targets.
Preferably, the step of decoding the query signal to obtain a decoding trigger signal specifically includes:
AD sampling is carried out on the inquiry signal to obtain an amplitude signal with 8bit width;
carrying out synchronization and amplitude comparison processing on the amplitude signal with the 8-bit width, and restoring the amplitude signal with the 8-bit width into a digital pulse signal;
and decoding the digital pulse signal according to a preset inquiry pulse standard format to obtain a decoding trigger signal.
Preferably, the calculation formula of the range delay values of the plurality of targets is:
Δt＝2R/c
where Δ t represents the range delay value, R represents the range of the target, and c represents the speed of light.
Preferably, the step S3 specifically includes:
after rounding down the range delay value of each target, after each range delay count, comparing whether the range delay count value is equal to the rounded down value of the range delay value of all targets.
Preferably, the step S4 specifically includes:
s41: when the distance delay count value is consistent with the distance delay value of a target, executing the response flow of the target, and counting the response times, otherwise, repeating the step S3;
s42: judging whether the count value of the response times is equal to the number of all targets or not;
s43: when the response number count value is equal to the number of all the targets, the response number count is stopped, otherwise step S3 is repeated.
Preferably, the step S43 further includes:
and clearing the count value of the response times.
Different from the prior art, the invention has the beneficial effects that:
1. the invention can realize multi-target response under the condition of not increasing related hardware resources;
2. the invention realizes multi-target response in a time division multiplexing mode, and can avoid response of two or more targets at the same time.
3. The invention can sequentially respond to a plurality of targets according to the sequence of the distance delay of different targets.
Drawings
Fig. 1 is a schematic flow chart of a multi-target response simulation method for a friend or foe identification system according to an embodiment of the present invention.
Fig. 2 is a detailed flowchart of step S4 of the multi-target response simulation method for the friend or foe identification system according to the embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1, the multi-target response simulation method for the friend or foe identification system of the embodiment of the invention comprises the following steps:
s1: and receiving the inquiry signal through the receiver, and decoding the inquiry signal to obtain a decoding trigger signal.
Wherein the receiver may receive an interrogation signal transmitted by an interrogation device, the interrogation signal typically being an intermediate frequency signal, and if the interrogation signal is a valid interrogation signal, decoding the interrogation signal may result in interrogation mode information and a decoded trigger signal.
In this embodiment, the step of decoding the query signal to obtain the decoding trigger signal specifically includes:
AD sampling is carried out on the inquiry signal to obtain an amplitude signal with 8bit width;
carrying out synchronization and amplitude comparison processing on the amplitude signal with the 8bit width, and restoring the amplitude signal with the 8bit width into a digital pulse signal;
and decoding the digital pulse signal according to a preset inquiry pulse standard format to obtain a decoding trigger signal.
S2: and acquiring distance delay values of a plurality of targets according to the decoding trigger signal, and simultaneously performing distance delay counting, wherein the distance delay values of the plurality of targets are obtained by calculating the preset distances of the plurality of targets.
The targets belong to simulated targets, are preset manually or in other manners, and have different distances. The range delay value for multiple targets is an amount of time that can be calculated from the range of multiple targets.
In this embodiment, the calculation formula of the range delay values of the plurality of targets is:
Δt＝2R/c
where Δ t represents the range delay value, R represents the range of the target, and c represents the speed of light. The speed of light is a known quantity, usually 2.998 × 108m/s. As can be seen from the calculation formula, the range delay values of the plurality of targets uniquely correspond to the ranges of the plurality of targets. For example, if the distance to a target is 1km, the distance delay value calculated according to the calculation formula is about 6.671 us.
The range delay count is an accumulated count, which is 1 per count.
S3: and after each distance delay counting, comparing whether the distance delay counting value is consistent with the distance delay values of all the targets.
For comparison, in this embodiment, step S3 specifically includes:
after rounding down the range delay value of each target, after each range delay count, comparing whether the range delay count value is equal to the rounded down value of the range delay value of all targets.
For example, if the distance of a certain object is 10km, the distance delay value calculated according to the calculation formula is about 66.71us, and after rounding down, the rounding down value of the distance delay value of the object is 66us, and if the distance delay value of the object is the smallest among a plurality of objects, it is identical to the rounding down value of the distance delay value of the object when the distance delay count value is 66.
S4: when the range delay count value coincides with the range delay value of one target, the response flow of the target is executed while counting the number of times of response, otherwise, step S3 is repeated until the number of times of response count value equals the number of all targets.
The number of response times count is also an accumulated count, and each count is accumulated by 1. The reply process includes extracting the ID number of the target to enable selective output of reply code data for the target, and generating a reply encoding trigger signal for subsequent digital encoding and modulated transmission.
If the distance delay count value is consistent with the distance delay value of a target, after the response process of the target is executed, the response time count value is incremented by 1, but if the response time count value is not equal to the number of all targets, indicating that there are targets that do not respond, step S3 needs to be repeated, and at this time, the distance delay count value is continuously accumulated, so all targets will be responded finally.
Specifically, referring to fig. 2, in the present embodiment, step S4 specifically includes:
s41: when the distance delay count value is consistent with the distance delay value of a target, executing the response flow of the target, and counting the response times, otherwise, repeating the step S3;
s42: judging whether the count value of the number of the response times is equal to the number of all targets or not;
s43: when the number-of-replies count value is equal to the number of all the targets, the number-of-replies count is stopped, otherwise step S3 is repeated.
Further, step S43 further includes:
and clearing the count value of the response times.
After the response time count value is cleared, the response time count value is guaranteed to be counted from 0 when multi-target response is carried out next time.
By the mode, aiming at the problems that the existing enemy and my identification response simulation equipment can only simulate the response function of a single target, can not simulate a plurality of target responses by the single response simulation equipment, and can not test and verify the multi-target identification processing performance of inquiry equipment, the multi-target response strategy based on time division multiplexing of hardware resources is designed under the condition that relevant hardware resources are not increased, so that a plurality of target responses can be simulated only by a single set of response simulation equipment, a plurality of targets can be responded, and the responses of two or more targets at the same time are avoided.
The above description is only an example of the present application and is not intended to limit the scope of the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
Claims (6)
1. A multi-target response simulation method for an identification system of the enemy and my people is characterized by comprising the following steps:
s1: receiving an inquiry signal through a receiver, and decoding the inquiry signal to obtain a decoding trigger signal;
s2: obtaining distance delay values of a plurality of targets according to the decoding trigger signal, and simultaneously performing distance delay counting, wherein the distance delay values of the plurality of targets are obtained by calculating the preset distances of the plurality of targets;
s3: after each distance delay counting, comparing whether the distance delay counting value is consistent with the distance delay values of all targets or not;
s4: when the range delay count value coincides with the range delay value of one target, the response flow of the target is executed while counting the number of times of response, otherwise, step S3 is repeated until the number of times of response count value equals to the number of all targets.
2. The multi-target response simulation method for the friend or foe identification system according to claim 1, wherein the step of decoding the inquiry signal to obtain a decoding trigger signal specifically comprises:
AD sampling is carried out on the inquiry signal to obtain an amplitude signal with 8bit width;
carrying out synchronization and amplitude comparison processing on the amplitude signal with the 8-bit width, and restoring the amplitude signal with the 8-bit width into a digital pulse signal;
and decoding the digital pulse signal according to a preset inquiry pulse standard format to obtain a decoding trigger signal.
3. The method according to claim 1, wherein the distance delay values of the plurality of objects are calculated by the following formula:
Δt＝2R/c
where Δ t represents the range delay value, R represents the range of the target, and c represents the speed of light.
4. The multi-target response simulation method for the friend or foe identification system of claim 3, wherein the step S3 specifically comprises:
after rounding down the range delay value of each target, after each range delay count, comparing whether the range delay count value is equal to the rounded down value of the range delay value of all targets.
5. The multi-target response simulation method for the friend or foe identification system according to claim 1, wherein the step S4 specifically includes:
s41: when the distance delay count value is consistent with the distance delay value of a target, executing the response flow of the target, and counting the response times, otherwise, repeating the step S3;
s42: judging whether the count value of the response times is equal to the number of all targets or not;
s43: when the response number count value is equal to the number of all the targets, the response number count is stopped, otherwise step S3 is repeated.
6. The method for simulating multi-target response in a friend or foe identification system of claim 5, wherein the step S43 further comprises:
and clearing the count value of the response times.
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Cited By (1)
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| CN115047445A (en) * | 2022-08-17 | 2022-09-13 | 四川九洲空管科技有限责任公司 | Random response delay-based friend-foe identification de-interleaving method and system |
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