CN107607003A - A kind of target missile is by the time measurement device and method after intercepting shock - Google Patents
A kind of target missile is by the time measurement device and method after intercepting shock Download PDFInfo
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Abstract
The invention discloses a kind of target missile by the time measurement device and method after intercepting shock, wherein, the measurement apparatus includes：Optical Transmit Unit, optical fiber sensing network, photoelectric detection unit, data acquisition process unit and resolving module；Optical Transmit Unit sends optical signal；Optical fiber sensing network is by optical signal transmission to photoelectric detection unit；Photoelectric detection unit converts optical signal into electric signal and exports thang-kng state；Data acquisition process unit is reported and the data frame to be matched by state according to thang-kng state with Fixed Time Interval τ；Resolve module and life span T of the target missile in knockout process is calculated according to the type and quantity of data frame1And target moment T in target missile2.The resolving to target missile life span and middle target moment is realized by the present invention, with bandwidth, not by Electromagnetic Interference, small volume, light weight, reelability be strong, corrosion-resistant, low cost and other advantages, comprehensively, synthetically intercept process to target missile to measure, support is provided to injure process inverting.
Description
Technical Field
The invention belongs to the technical field of information measurement, and particularly relates to a time measuring device and method for a target bomb after being intercepted and impacted.
Background
Along with the improvement of the guidance precision of the reverse guidance weapon system, the measurement precision requirement on the target projectile interception information is higher and higher. The target bullet survival time and the target hit time are accurately measured, and powerful data support can be provided for identifying the guidance precision of the anti-guidance weapon system, judging the damage effect and analyzing the error factors of the system.
At present, the methods for measuring the target projectile interception information mainly comprise acoustic detection, radar tracking, optical imaging and the like, and have certain limitations. The acoustic detection mode has low cost, but is easily interfered by environmental sound and reflected sound, and has low measurement precision, thereby being difficult to meet the current high-precision measurement requirement. The air defense radar is a mature testing means, but is difficult to detect for aircrafts such as cruise missiles and the like which are in a radar blind area during low-altitude flight. The high-speed shooting detection mode is adopted, the shooting of the estimated target area needs to be carried out at the speed of more than thousand frames per second, the data volume generated per second is in the GB magnitude, the data acquisition quantity is large, the real-time requirement cannot be met by data processing and transmission, the observation distance is short, and the requirement of remote measurement is difficult to realize. The target bomb survival time is defined as the time from the moment of occurrence of interception to the failure of internal equipment of a bomb body, acoustics, radar, optics and the like belong to external measurement means, and can only be observed through external phenomena such as fire, bomb falling and the like, so that the failure time of the internal equipment is difficult to accurately measure, the measurement precision is low, and the problem of accurate measurement of the target bomb survival time and the target-in-time cannot be solved.
Internal measurement means are mostly built on the basis of electrical sensors. Because the target projectile interception instant time is extremely short (hundreds of mu s magnitude), in order to realize the rapid measurement of the survival time and the target hitting moment, the response frequency of the sensor is above 10MHz, and great technical difficulty exists. In addition, the impact process can generate strong electromagnetic interference, which is very easy to cause the failure of the electric sensor. Therefore, the traditional electric sensor is difficult to realize the accurate measurement of the survival time and the target hitting time in the target projectile intercepting process.
Disclosure of Invention
The technical problem of the invention is solved: the device and the method can solve the survival time and the target time of the target bomb, have the advantages of wide frequency band, no electromagnetic wave interference, small volume, light weight, strong flexibility, corrosion resistance, low cost and the like, can be fused with signal data such as sound, light, radar and the like, comprehensively and comprehensively measure the interception process of the target bomb, and provide support for the inversion of the damage process.
In order to solve the above technical problem, the present invention discloses a time measuring device after a target bomb is intercepted and impacted, which comprises: the system comprises a light emitting unit, an optical fiber sensing network, a photoelectric detection unit, a data acquisition and processing unit and a calculation module; wherein, the optical fiber sensing network is arranged to cover the target surface area of the target bomb;
a light emitting unit for emitting a light signal;
the optical fiber sensing network is used for sensing the optical signal sent by the light emitting unit and transmitting the optical signal to the photoelectric detection unit;
the photoelectric detection unit is used for converting the optical signal into an electric signal, filtering, amplifying and judging the electric signal, and outputting a light-on state according to a judgment result;
the data acquisition processing unit is used for reporting a data frame matched with the passing state at a fixed time interval tau according to the light passing state; wherein the data frame comprises: default data frames and/or valid data frames carrying impacted optical fiber breakage numbers;
a resolving module for calculating the survival time T of the target projectile in the impact process according to the type and the number of the data frames reported by the data acquisition and processing unit1And target-in-target time T of target projectile2(ii) a Wherein,
T1＝τ×n1
T2＝T0+τ×n2
wherein n is1The sum of all data frames between the first effective data frame and the last data frame reported by the data acquisition processing unit is represented; t is0Representing the time of the firing moment of the target projectile; n is2The first default which represents the report of the data acquisition processing unitThe sum of all data frames between the data frame and the first valid data frame is considered.
In the above-mentioned time measuring device after the target projectile is intercepted and impacted,
the optical fiber sensing network consists of optical fiber arrays which are arranged in a target surface area at equal intervals, the target surface area of the target bomb is covered, and the arrangement interval is smaller than the diameter of an area formed by the target bomb after being intercepted and impacted;
the optical fiber array is distributed by adopting a single sensing optical fiber or a ribbon optical fiber, and the distribution mode comprises the following steps: the equal pitch positive and negative spiral staggered winding layout mode and the equal pitch longitude and latitude staggered layout mode.
In the above apparatus for measuring time after the target projectile is intercepted and impacted, the photodetecting unit includes: the photoelectric conversion module and the signal acquisition processing module;
the photoelectric conversion module is used for converting the optical signal into an electrical signal;
the signal acquisition processing module is used for filtering and amplifying the electric signal; comparing the amplitude of the filtered and amplified electric signal with a preset threshold value; if the amplitude of the electric signal after filtering and amplifying is larger than the preset threshold value, preliminarily judging that a high-speed impact event occurs, and outputting a first state signal for indicating that the optical fiber is broken; otherwise, a second status signal indicating that the optical fiber is not broken is output.
In the time measuring device after the target projectile is intercepted and impacted, the data acquisition and processing unit is used for:
when detecting that the optical fiber on-off state signal reported by the photoelectric detection unit is always a second state signal, reporting a default data frame at a fixed time interval tau;
when the fact that the optical fiber on-off state signal reported by the photoelectric detection unit is changed from a second state signal to a first state signal is detected, reporting an effective data frame at a fixed time interval tau;
and when detecting that the optical fiber on-off state signal reported by the photoelectric detection unit is always the first state signal, reporting a default data frame at a fixed time interval tau.
In the above time measuring device after the target projectile is intercepted and impacted, when the data collecting and processing unit detects that the fiber on-off state signal reported by the photoelectric detection unit changes from the second state signal to the first state signal, and reports an effective data frame at a fixed time interval τ, the time measuring device includes:
when detecting that the optical fiber on-off state signal reported by the photoelectric detection unit is changed from a second state signal to a first state signal, acquiring a change state signal;
judging the frequency of the change state signal in a set time interval period;
if the occurrence frequency of the change state signal is smaller than a set frequency threshold value, determining the change state signal as real optical fiber breakage information, and reporting an effective data frame at a fixed time interval tau; otherwise, determining the change state signal as the broken information of the virtual optical fiber, and reporting the default data frame at a fixed time interval tau.
In the above time measuring device after the target projectile is intercepted and impacted, when the data acquisition and processing unit determines that the change state signal is real fiber breakage information and reports an effective data frame at a fixed time interval τ, the time measuring device includes:
when the change state signal is determined to be real optical fiber breakage information, analyzing position information of interception impact according to the corresponding relation between the arrangement position of the optical fiber sensing network and the target surface area, performing frame sealing processing on the position information to obtain an effective data frame carrying an impact optical fiber breakage number, and reporting the effective data frame at a fixed time interval tau.
In the time measuring device after the target bomb is intercepted and impacted, the light emitting unit is a semiconductor light source or an optical fiber light source.
In the above time measuring device after the target projectile is intercepted and impacted, the photoelectric conversion module is: a PIN-FET photodetector, or a PD-Array photodetector Array, or a photodiode.
Correspondingly, the invention also discloses a time measuring method after the target bomb is intercepted and impacted, which comprises the following steps:
sensing an optical signal sent by the light emitting unit through an optical fiber sensing network, and transmitting the optical signal to the photoelectric detection unit;
converting the optical signal into an electrical signal through a photoelectric detection unit, filtering, amplifying and judging the electrical signal, and outputting a light-on state according to a judgment result;
reporting a data frame matched with the passing state at a fixed time interval tau by a data acquisition processing unit according to the light passing state; wherein the data frame comprises: default data frames and/or valid data frames carrying impacted optical fiber breakage numbers;
calculating the survival time T of the target projectile in the impact process by a resolving module according to the type and the number of the data frames reported by the data acquisition and processing unit1And target-in-target time T of target projectile2(ii) a Wherein,
T1＝τ×n1
T2＝T0+τ×n2
wherein n is1The sum of all data frames between the first effective data frame and the last data frame reported by the data acquisition processing unit is represented; t is0Representing the time of the firing moment of the target projectile; n is2The sum of all data frames between the first default data frame and the first effective data frame reported by the data acquisition and processing unit is represented.
The invention has the following advantages:
according to the time measuring device and method after the target bomb is intercepted and impacted, the survival time of the target bomb in the impacting process and the target-in-target time of the target bomb are calculated through the total amount of the data frames, so that equipment such as a high-precision counter and a time service module are omitted, time delay generated in the time reading process is avoided, the size of the equipment is effectively reduced on the premise of ensuring the measuring precision, and the product cost is reduced.
Secondly, the invention adopts the optical fiber sensing network to measure the target bomb survival time and the target-hitting time, has the advantages of wide frequency band, no electromagnetic wave interference, small volume, light weight, strong flexibility, corrosion resistance, low cost and the like, has good environmental adaptability, and meets the application requirements under complex use environments. The target bomb interception system can be fused with signal data such as sound, light, radar and the like, comprehensively and comprehensively measures the target bomb interception process, and provides support for the inversion of the damage process.
In addition, the optical fiber perception network can be composed of a plurality of optical fibers, the optical fiber perception network can be laid in a mode of equal pitch forward and reverse spiral staggered winding or an equal pitch warp and weft staggered mode and is embedded in the target shell, and the laying mode is simple, easy and diversified and is suitable for different application requirements.
Drawings
Fig. 1 is a block diagram of a time measuring device after a target projectile is intercepted and impacted according to an embodiment of the present invention;
fig. 2 is a flowchart illustrating steps of a method for measuring time after a target projectile is impacted by interception according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, common embodiments of the present invention will be described in further detail below with reference to the accompanying drawings.
The invention discloses a time measuring device and method after a target bomb is intercepted and impacted, which can realize the accurate measurement of survival time and target hitting time after the target bomb is intercepted and impacted and is applied to the field of reverse-conducting interception measurement. The method has the advantages of simple layout, low cost, high reliability, good environmental adaptability and the like.
Referring to fig. 1, a block diagram of a time measuring device after a target bomb is intercepted and impacted according to an embodiment of the present invention is shown. In this embodiment, the apparatus for measuring the time after the target projectile is intercepted and impacted comprises: the optical fiber sensing system comprises a light emitting unit 100, an optical fiber sensing network 200, a photoelectric detection unit 300, a data acquisition processing unit 400 and a calculation module 500.
A light emitting unit 100 for emitting a light signal.
In the present embodiment, the light emitting unit 100 may be, but is not limited to, a semiconductor light source or a fiber light source.
And the optical fiber sensing network 200 is used for sensing the optical signal sent by the light emitting unit and transmitting the optical signal to the photoelectric detection unit.
In this embodiment, the fiber sensing network 200 is deployed to cover the target surface area of the target missile. Preferably, the optical fiber sensing network 200 may be composed of optical fiber arrays arranged in an equidistant manner in a target surface area, and cover the target surface area of the target missile, and the arrangement distance is smaller than the diameter of an area formed after the target missile is intercepted and impacted. The optical fiber array is distributed by adopting a single sensing optical fiber or a ribbon optical fiber, and the distribution mode comprises the following steps: the equal pitch positive and negative spiral staggered winding layout mode and the equal pitch longitude and latitude staggered layout mode.
For example, the optical fiber sensing network can be composed of optical fiber arrays arranged in an equidistant mode in a target surface area, and the optical fiber sensing network can be laid in the target projectile shell in an equidistant forward and reverse spiral staggered winding mode or an equidistant longitude and latitude staggered mode. After the target bomb is intercepted and impacted, the earliest impact contact point begins to diffuse to form a damaged area, an optical fiber sensing network in the area is damaged, and the photoelectric detection unit determines the on-off state of the corresponding sensing optical fiber through detecting the change of an optical signal of the light emission unit from existence to nonexistence, so that impact related information is acquired.
The photoelectric detection unit 300 is configured to convert the optical signal into an electrical signal, perform filtering, amplification and decision processing on the electrical signal, and output a light-on state according to a decision result.
In this embodiment, the photodetecting unit 300 specifically includes: photoelectric conversion module and signal acquisition processing module. Wherein,
the photoelectric conversion module is used for converting the optical signal into an electrical signal.
The signal acquisition processing module is used for filtering and amplifying the electric signal; comparing the amplitude of the filtered and amplified electric signal with a preset threshold value; if the amplitude of the electric signal after the filtering and amplifying is larger than the preset threshold value, preliminarily judging that a high-speed impact event occurs, and outputting a first state signal (such as '0') for indicating that the optical fiber is broken; otherwise, a second status signal (e.g., "1") indicating that the fiber has not been broken is output.
In this embodiment, the photoelectric conversion module may be, but is not limited to: a PIN-FET photodetector, or a PD-Array photodetector Array, or a photodiode.
And the data acquisition and processing unit 400 is configured to report the data frame matched with the light passing state at a fixed time interval τ according to the light passing state.
In this embodiment, the data frame includes: a default data frame and/or a valid data frame carrying the hit fiber break number. Preferably, the data acquisition processing unit 400 may be specifically configured to:
when detecting that the optical fiber on-off state signal reported by the photoelectric detection unit is always a second state signal, reporting a default data frame at a fixed time interval tau (mu s level);
when the fact that the optical fiber on-off state signal reported by the photoelectric detection unit is changed from a second state signal to a first state signal is detected, reporting an effective data frame at a fixed time interval tau;
and when detecting that the optical fiber on-off state signal reported by the photoelectric detection unit is always the first state signal, reporting a default data frame at a fixed time interval tau.
When the data acquisition and processing unit 400 detects that the optical fiber on-off state signal reported by the photoelectric detection unit changes from the second state signal to the first state signal, and reports the valid data frame at a fixed time interval τ, the method specifically includes:
when detecting that the optical fiber on-off state signal reported by the photoelectric detection unit is changed from a second state signal to a first state signal, acquiring a change state signal;
judging the frequency of the change state signal in a set time interval period;
if the occurrence frequency of the change state signal is smaller than a set frequency threshold value, determining the change state signal as real optical fiber breakage information, and reporting an effective data frame at a fixed time interval tau; otherwise, determining the change state signal as the broken information of the virtual optical fiber, and reporting the default data frame at a fixed time interval tau.
Further, when the data acquisition processing unit 400 determines that the change state signal is real fiber breakage information and reports a valid data frame at a fixed time interval τ, the method includes:
when the change state signal is determined to be real optical fiber breakage information, analyzing position information of interception impact according to the corresponding relation between the arrangement position of the optical fiber sensing network and the target surface area, performing frame sealing processing on the position information to obtain an effective data frame carrying an impact optical fiber breakage number, and reporting the effective data frame at a fixed time interval tau.
It should be noted that the light emission and detection of each optical fiber are independent and do not affect each other. The data frame can be divided into a frame head, a frame data and a frame tail. The frame head is used for indicating the start of the data frame, and the frame tail is a check mark and used for judging the validity of the data frame. When reporting the default data frame, the frame data content is an invalid data mark. When a valid data frame is reported, the content of the frame data is interception impact position information (namely, an impact optical fiber fracture number).
In addition, the data acquisition and processing unit reports the data frames by adopting a data transmission strategy of combining the default data frames and the effective data frames, the default data frames and the effective data frames have the same format and the same length, and the sending time of different types of frames and the interval time between the frames are completely the same. At present, the device reports the default/valid data frame with a fixed time interval τ of 1.6 μ s, that is, the target bullet survival time and the target hit time measurement accuracy are 1.6 μ s. When the optical fiber sensing network is not broken, the light-passing state of the optical fiber is always '1', the data acquisition processing unit reports a default data frame, and when the light-passing state signal of the optical fiber is changed from the light-passing state '1' to the light-not-passing state '0', the data acquisition processing unit reports an effective data frame.
A calculating module 500 for calculating the survival time T of the target projectile in the impact process according to the type and the number of the data frames reported by the data acquisition and processing unit1And target-in-target time T of target projectile2。
In this embodiment, when the target bomb is intercepted and impacted, the data acquisition and processing unit reports the valid data frame, and when the internal device of the target bomb fails due to impact, the data acquisition and processing unit does not report the default/valid data frame any more, so that the survival time of the target bomb in the impacting process can be calculated according to the total amount of the data frames between the first valid data frame and the last data frame reported by the data acquisition and processing unit; and calculating the target-in-target time of the target projectile by combining the total amount of the received data frames with the launching time information of the target projectile. In particular, the target projectile has a life time T during the impact process1And target-in-target time T of target projectile2The solution is as follows:
T1＝τ×n1
T2＝T0+τ×n2
wherein n is1The sum of all data frames between the first effective data frame and the last data frame reported by the data acquisition processing unit is represented; t is0Representing the time of the firing moment of the target projectile; n is2The sum of all data frames between the first default data frame and the first effective data frame reported by the data acquisition and processing unit is represented.
In summary, the time measuring device and method for the target projectile after being intercepted and impacted disclosed by the invention can calculate the survival time of the target projectile in the impacting process and the target-in-target time of the target projectile through the total amount of the data frames, thereby saving equipment such as a high-precision counter and a time service module, avoiding the time delay generated in the time reading process, effectively reducing the volume of the equipment on the premise of ensuring the measuring precision and reducing the product cost.
Secondly, the invention adopts the optical fiber sensing network to measure the target bomb survival time and the target-hitting time, has the advantages of wide frequency band, no electromagnetic wave interference, small volume, light weight, strong flexibility, corrosion resistance, low cost and the like, has good environmental adaptability, and meets the application requirements under complex use environments. The target bomb interception system can be fused with signal data such as sound, light, radar and the like, comprehensively and comprehensively measures the target bomb interception process, and provides support for the inversion of the damage process.
In addition, the optical fiber perception network can be composed of a plurality of optical fibers, the optical fiber perception network can be laid in a mode of equal pitch forward and reverse spiral staggered winding or an equal pitch warp and weft staggered mode and is embedded in the target shell, and the laying mode is simple, easy and diversified and is suitable for different application requirements.
On the basis of the embodiment of the device, the invention also discloses a time measuring method after the target bomb is intercepted and impacted. Referring to fig. 2, a flowchart illustrating steps of a method for measuring time after a target projectile is impacted by interception according to an embodiment of the present invention is shown. In this embodiment, the method for measuring the time after the target projectile is intercepted and impacted includes:
step 101, sensing an optical signal sent by a light emitting unit through an optical fiber sensing network, and transmitting the optical signal to a photoelectric detection unit.
And 102, converting the optical signal into an electric signal through a photoelectric detection unit, filtering, amplifying and judging the electric signal, and outputting a light-on state according to a judgment result.
And 103, reporting a data frame matched with the passing state at a fixed time interval tau by the data acquisition and processing unit according to the light passing state.
In this embodiment, the data frame includes: a default data frame and/or a valid data frame carrying the hit fiber break number.
104, calculating the survival time T of the target projectile in the impact process by a calculating module according to the type and the number of the data frames reported by the data acquisition and processing unit1And target-in-target time T of target projectile2。
In the present embodiment, the survival time T1And target-in-target time T of target projectile2The solution is as follows:
T1＝τ×n1
T2＝T0+τ×n2
wherein n is1The sum of all data frames between the first effective data frame and the last data frame reported by the data acquisition processing unit is represented; t is0Representing the time of the firing moment of the target projectile; n is2The sum of all data frames between the first default data frame and the first effective data frame reported by the data acquisition and processing unit is represented.
For the method embodiment, since it corresponds to the apparatus embodiment, the description is relatively simple, and for the relevant points, refer to the description of the apparatus embodiment section.
The embodiments in the present description are all described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.
The above description is only for the best mode of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention.
Those skilled in the art will appreciate that the invention may be practiced without these specific details.
Claims (9)
1. A time measuring device after a target projectile is intercepted and impacted, which is characterized by comprising: the system comprises a light emitting unit, an optical fiber sensing network, a photoelectric detection unit, a data acquisition and processing unit and a calculation module; wherein, the optical fiber sensing network is arranged to cover the target surface area of the target bomb;
a light emitting unit for emitting a light signal;
the optical fiber sensing network is used for sensing the optical signal sent by the light emitting unit and transmitting the optical signal to the photoelectric detection unit;
the photoelectric detection unit is used for converting the optical signal into an electric signal, filtering, amplifying and judging the electric signal, and outputting a light-on state according to a judgment result;
the data acquisition processing unit is used for reporting a data frame matched with the passing state at a fixed time interval tau according to the light passing state; wherein the data frame comprises: default data frames and/or valid data frames carrying impacted optical fiber breakage numbers;
a resolving module for calculating the survival time T of the target projectile in the impact process according to the type and the number of the data frames reported by the data acquisition and processing unit1And target-in-target time T of target projectile2(ii) a Wherein,
T1＝τ×n1
T2＝T0+τ×n2
wherein n is1The sum of all data frames between the first effective data frame and the last data frame reported by the data acquisition processing unit is represented; t is0Representing the time of the firing moment of the target projectile; n is2The sum of all data frames between the first default data frame and the first effective data frame reported by the data acquisition and processing unit is represented.
2. The apparatus for measuring the time-to-live of a target projectile after interception and impact according to claim 1,
the optical fiber sensing network consists of optical fiber arrays which are arranged in a target surface area at equal intervals, the target surface area of the target bomb is covered, and the arrangement interval is smaller than the diameter of an area formed by the target bomb after being intercepted and impacted;
the optical fiber array is distributed by adopting a single sensing optical fiber or a ribbon optical fiber, and the distribution mode comprises the following steps: the equal pitch positive and negative spiral staggered winding layout mode and the equal pitch longitude and latitude staggered layout mode.
3. The apparatus of claim 1, wherein the photoelectric detection unit comprises: the photoelectric conversion module and the signal acquisition processing module;
the photoelectric conversion module is used for converting the optical signal into an electrical signal;
the signal acquisition processing module is used for filtering and amplifying the electric signal; comparing the amplitude of the filtered and amplified electric signal with a preset threshold value; if the amplitude of the electric signal after filtering and amplifying is larger than the preset threshold value, preliminarily judging that a high-speed impact event occurs, and outputting a first state signal for indicating that the optical fiber is broken; otherwise, a second status signal indicating that the optical fiber is not broken is output.
4. The apparatus as claimed in claim 3, wherein the data acquisition and processing unit is configured to:
when detecting that the optical fiber on-off state signal reported by the photoelectric detection unit is always a second state signal, reporting a default data frame at a fixed time interval tau;
when the fact that the optical fiber on-off state signal reported by the photoelectric detection unit is changed from a second state signal to a first state signal is detected, reporting an effective data frame at a fixed time interval tau;
and when detecting that the optical fiber on-off state signal reported by the photoelectric detection unit is always the first state signal, reporting a default data frame at a fixed time interval tau.
5. The apparatus according to claim 4, wherein the data acquisition and processing unit reports valid data frames at a fixed time interval τ when detecting that the fiber on-off status signal reported by the photoelectric detection unit changes from the second status signal to the first status signal, the apparatus comprises:
when detecting that the optical fiber on-off state signal reported by the photoelectric detection unit is changed from a second state signal to a first state signal, acquiring a change state signal;
judging the frequency of the change state signal in a set time interval period;
if the occurrence frequency of the change state signal is smaller than a set frequency threshold value, determining the change state signal as real optical fiber breakage information, and reporting an effective data frame at a fixed time interval tau; otherwise, determining the change state signal as the broken information of the virtual optical fiber, and reporting the default data frame at a fixed time interval tau.
6. The apparatus as claimed in claim 5, wherein the data acquisition and processing unit, when determining the change status signal as real fiber breakage information and reporting valid data frames at a fixed time interval τ, comprises:
when the change state signal is determined to be real optical fiber breakage information, analyzing position information of interception impact according to the corresponding relation between the arrangement position of the optical fiber sensing network and the target surface area, performing frame sealing processing on the position information to obtain an effective data frame carrying an impact optical fiber breakage number, and reporting the effective data frame at a fixed time interval tau.
7. The apparatus of claim 1, wherein the light emitting unit is a semiconductor light source or a fiber light source.
8. The apparatus of claim 3, wherein the photoelectric conversion module is configured to: a PIN-FET photodetector, or a PD-Array photodetector Array, or a photodiode.
9. A method for measuring time after a target bomb is intercepted and impacted, which is characterized by comprising the following steps:
sensing an optical signal sent by the light emitting unit through an optical fiber sensing network, and transmitting the optical signal to the photoelectric detection unit;
converting the optical signal into an electrical signal through a photoelectric detection unit, filtering, amplifying and judging the electrical signal, and outputting a light-on state according to a judgment result;
reporting a data frame matched with the passing state at a fixed time interval tau by a data acquisition processing unit according to the light passing state; wherein the data frame comprises: default data frames and/or valid data frames carrying impacted optical fiber breakage numbers;
calculating the survival time T of the target projectile in the impact process by a resolving module according to the type and the number of the data frames reported by the data acquisition and processing unit1And target-in-target time T of target projectile2(ii) a Wherein,
T1＝τ×n1
T2＝T0+τ×n2
wherein n is1The sum of all data frames between the first effective data frame and the last data frame reported by the data acquisition processing unit is represented; t is0Representing the time of the firing moment of the target projectile; n is2The sum of all data frames between the first default data frame and the first effective data frame reported by the data acquisition and processing unit is represented.
Priority Applications (1)
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| CN103178998A (en) * | 2013-03-20 | 2013-06-26 | 中国人民解放军91404部队 | Test and control data transmission method and device |
| CN103611324A (en) * | 2013-11-14 | 2014-03-05 | 南京航空航天大学 | Unmanned helicopter flight control system and control method thereof |
| CN104009982A (en) * | 2014-05-15 | 2014-08-27 | 北京航天发射技术研究所 | File grouping and mass texting device based on ultra-short wave radio station and file grouping and mass texting method |
| CN105588478A (en) * | 2015-12-23 | 2016-05-18 | 北京航天控制仪器研究所 | Measuring device and measuring method for target-hitting moments |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103178998A (en) * | 2013-03-20 | 2013-06-26 | 中国人民解放军91404部队 | Test and control data transmission method and device |
| CN103611324A (en) * | 2013-11-14 | 2014-03-05 | 南京航空航天大学 | Unmanned helicopter flight control system and control method thereof |
| CN104009982A (en) * | 2014-05-15 | 2014-08-27 | 北京航天发射技术研究所 | File grouping and mass texting device based on ultra-short wave radio station and file grouping and mass texting method |
| CN105588478A (en) * | 2015-12-23 | 2016-05-18 | 北京航天控制仪器研究所 | Measuring device and measuring method for target-hitting moments |
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