Networking ranging performance evaluation method, system and device of space debris laser ranging network and storage medium

Abstract

The invention discloses a space debris laser ranging network networking ranging performance evaluation method, system and device and a storage medium, and is applied to the technical field of space debris laser ranging network performance evaluation, and the method comprises the steps: calculating the number of monopulse echo photons of a space debris laser ranging network, and calculating the number of the monopulse echo photons of the space debris laser ranging network based on Poisson probability distribution; calculating the photoelectron detection probability of the detector, and calculating the signal detection probability based on a signal triggering detector condition; and based on the Poisson probability distribution, calculating the probability that the detector is not triggered by noise, and combining the signal detection probability to obtain the single pulse detection probability of the networking of the space debris laser ranging network. According to the method, effective and accurate evaluation of the ranging performance of the space debris laser ranging network networking is realized, and resource waste is effectively reduced while it is ensured that the space debris laser ranging network networking accurately positions a target.

Description

Technical Field

[0001] The present invention relates to the technical field of space debris laser ranging network performance evaluation, and in particular to a space debris laser ranging network networking ranging performance evaluation method, system, equipment and storage medium. Background Art

[0002] Space debris removal is one of the important means to ensure on-orbit safety, and accurate positioning of space targets is an essential common key technology for space debris removal. Accurate space target positioning can not only achieve effective space debris removal, but also has important significance for accurate space confrontation.

[0003] At present, the high-precision networked collaborative positioning measurement technology of space debris based on laser ranging is mainly used to provide high-precision target indication for space debris removal and space confrontation, but there is no method that can effectively evaluate the ranging performance of the space debris laser ranging network. The accuracy evaluation of the ranging performance of the space debris laser ranging network can provide an effective reference for the selection of networks for positioning and measurement of different targets, effectively reducing resource waste while ensuring the accurate positioning of the space debris laser ranging network.

[0004] Therefore, how to provide a space debris laser ranging network ranging performance evaluation method, system, device and storage medium that can effectively and accurately evaluate the ranging performance of the space debris laser ranging network is an urgent problem that technical personnel in this field need to solve. Summary of the invention

[0005] In view of this, the present invention proposes a method, system, device and storage medium for evaluating the ranging performance of a space debris laser ranging network.

[0006] In order to achieve the above object, the present invention adopts the following technical solution:

[0007] A space debris laser ranging network networking ranging performance evaluation method, comprising:

[0008] Step 1: Calculate the number of single pulse echo photons of the space debris laser ranging network, and calculate the probability of the detector detecting photoelectrons based on the Poisson probability distribution, and calculate the signal detection probability based on the signal triggering detector conditions;

[0009] Step 2: Based on the Poisson probability distribution, calculate the probability of the detector not being triggered by noise, and combine it with the signal detection probability to obtain the single pulse detection probability of the space debris laser ranging network.

[0010] Optionally, in step 1, the number of single pulse echo photons of the space debris laser ranging network is calculated as follows:

[0011]

[0012] Among them, N s is the number of single pulse echo photons in the space debris laser ranging network; N is the number of space debris laser ranging stations in the space debris laser ranging network; E t is the laser pulse laser energy; is Planck's constant; v is the laser photon frequency; θ d is the laser divergence angle; R is the target distance; Δθ p is the laser beam pointing deviation; Δθ j is the laser beam tracking deviation; A r is the receiving telescope area; η r is the efficiency of the receiving optical system; η c is the detector quantum efficiency; ρ is the target reflectivity; σ is the target reflection area; T a is the one-way atmospheric transmittance; T c is the one-way cirrus transmittance.

[0013] Optionally, in step 1, the probability of the detector detecting a photoelectron is calculated based on the Poisson probability distribution as follows:

[0014]

[0015] Among them, P1(k; N s ) is when the average number of photoelectrons in a single pulse is N s When k photoelectrons are generated, the probability is: N s The number of single pulse echo photons for the space debris laser ranging network.

[0016] Optionally, in step 1, based on the signal triggering detector condition, the signal detection probability is calculated, specifically:

[0017] The signal triggering detector condition is to generate at least one photoelectron, then the signal detection probability is as follows:

[0018]

[0019] Among them, P s is the signal detection probability; P1(0; N s ) is when the average number of photoelectrons in a single pulse is N s The probability of producing 0 photoelectrons is .

[0020] Optionally, in step 2, the probability of the detector not being triggered by noise is calculated based on the Poisson probability distribution as follows:

[0021]

[0022] N noi =(Tgate +T pulse )v n ;

[0023] Among them, P2(z;N noi ) is when the average noise photoelectron number of a single pulse is N noi The probability of triggering z noise photoelectrons when n is the probability of the detector not being triggered by noise; P2(0; N noi ) is when the average noise photoelectron number of a single pulse is N noi The probability of triggering 0 noise photoelectrons when T gate T is the time from the moment the range gate is opened to the moment the front photon of the echo pulse reaches the detector; pulse is the echo signal pulse width; v n is the total noise rate of the detection process.

[0024] Optionally, in step 2, based on the probability of not being triggered by noise and combined with the signal detection probability, the single pulse detection probability of the space debris laser ranging network is obtained as follows:

[0025] P d =P n ·P s ;

[0026] Among them, P d The single pulse detection probability of the space debris laser ranging network; P n is the probability of the detector not being triggered by noise; P s is the signal detection probability.

[0027] Optionally, in step 2, after obtaining the single pulse detection probability of the space debris laser ranging network, it also includes: calculating the detection success probability of the space debris laser ranging network, specifically:

[0028] Assuming that at least one echo is detected successfully per second on average, the target detection is considered successful. The detection success probability of the space debris laser ranging network is as follows:

[0029] P L =1-(1-P d ) f ;

[0030] Among them, P L The detection success probability of the space debris laser ranging network; P d is the single pulse detection probability of the space debris laser ranging network; f is the laser ranging repetition rate.

[0031] The present invention also provides a space debris laser ranging network networking ranging performance evaluation system using a space debris laser ranging network networking ranging performance evaluation method, comprising:

[0032] Signal detection probability calculation module: used to calculate the number of single pulse echo photons of the space debris laser ranging network, and based on the Poisson probability distribution, calculate the probability of the detector detecting photoelectrons, and calculate the signal detection probability based on the signal triggering detector conditions;

[0033] Single pulse detection probability calculation module: used to calculate the probability of the detector not being triggered by noise based on Poisson probability distribution, and combine the signal detection probability to obtain the single pulse detection probability of the space debris laser ranging network.

[0034] The present invention also provides an electronic device, comprising:

[0035] Memory for storing computer programs;

[0036] A processor is used to implement the steps of a method for evaluating the ranging performance of a space debris laser ranging network when executing a computer program.

[0037] The present invention also provides a computer-readable storage medium, on which a computer program is stored. When the computer program is executed by a processor, the steps of a method for evaluating the ranging performance of a space debris laser ranging network are implemented.

[0038] It can be seen from the above technical solutions that, compared with the prior art, the present invention proposes a method, system, device and storage medium for evaluating the ranging performance of a space debris laser ranging network. The present invention calculates the number of single pulse echo photons of the space debris laser ranging network, and based on the Poisson probability distribution, calculates the probability of the detector detecting photoelectrons, and based on the signal triggering detector condition, calculates the signal detection probability, and combines the probability of not being triggered by noise calculated based on the Poisson probability distribution to obtain the final single pulse detection probability of the space debris laser ranging network, thereby achieving an effective accuracy evaluation of the ranging performance of the space debris laser ranging network, and effectively reducing the waste of resources while ensuring that the space debris laser ranging network accurately locates the target. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0040] Figure 1 It is a schematic diagram of the method flow of the present invention.

[0041] Figure 2 The existing 1.2-meter laser ranging system of Kunming Station of the present invention is used for the reflection area of ​​1m 2 Schematic diagram of the curve of single pulse measurement detection rate at different distances of space debris.

[0042] Figure 3 This is a schematic diagram of the synchronous measurement of single pulse detection probability by networking multiple 1.2-meter-aperture telescopes of the present invention.

[0043] Figure 4 This is a schematic diagram of the synchronous measurement of single pulse detection probability by networking multiple 2-meter-aperture telescopes of the present invention. DETAILED DESCRIPTION

[0044] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0045] Embodiment 1:

[0046] Embodiment 1 of the present invention discloses a method for evaluating the ranging performance of a space debris laser ranging network. Figure 1 As shown, including:

[0047] Step 1: Calculate the number of single pulse echo photons of the space debris laser ranging network, and calculate the probability of the detector detecting photoelectrons based on the Poisson probability distribution, and calculate the signal detection probability based on the signal triggering detector conditions.

[0048] Calculate the number of single pulse echo photons of the space debris laser ranging network as follows:

[0049]

[0050] Among them, N s is the number of single pulse echo photons in the space debris laser ranging network; N is the number of space debris laser ranging stations in the space debris laser ranging network; E t is the laser pulse laser energy; is Planck's constant; v is the laser photon frequency; θ d is the laser divergence angle; R is the target distance; Δθ p is the laser beam pointing deviation; Δθ j is the laser beam tracking deviation; A r is the receiving telescope area; η r is the efficiency of the receiving optical system; η cis the detector quantum efficiency; ρ is the target reflectivity; σ is the target reflection area; T a is the one-way atmospheric transmittance; T c is the one-way cirrus transmittance.

[0051] Based on the Poisson probability distribution, the probability of the detector detecting a photoelectron is calculated as follows:

[0052]

[0053] Among them, P1(k; N s ) is when the average number of photoelectrons in a single pulse is N s When k photoelectrons are generated, the probability is: N s The number of single pulse echo photons for the space debris laser ranging network.

[0054] Based on the signal triggering detector conditions, the signal detection probability is calculated as follows:

[0055] The signal triggering detector condition is to generate at least one photoelectron, then the signal detection probability is as follows:

[0056]

[0057] Among them, P s is the signal detection probability; P1(0; N s ) is when the average number of photoelectrons in a single pulse is N s The probability of producing 0 photoelectrons is .

[0058] Step 2: Based on the Poisson probability distribution, calculate the probability of the detector not being triggered by noise, and combine it with the signal detection probability to obtain the single pulse detection probability of the space debris laser ranging network.

[0059] Assume that the total noise rate of the detection process is v n , the echo signal pulse width is T pulse Since the prediction error of space debris is relatively large, it is necessary to set the range gate larger, which reduces the efficiency of time filtering and increases the probability of false alarms, thereby reducing the probability of signal detection. Assume that the echo signal appears at time T after the range gate is opened. gate The detector can be triggered by the signal if: T gate +T pulse During this time, the detector was not triggered by noise (false alarm).

[0060] Based on the Poisson probability distribution, the probability of the detector not being triggered by noise is calculated, that is, the detector is gate +T pulse The probability of not being triggered by noise within a certain period of time is as follows:

[0061]

[0062] N noi =(T gate +T pulse )v n ;

[0063] Among them, P2(z;N noi ) is when the average noise photoelectron number of a single pulse is N noi The probability of triggering z noise photoelectrons when n is the probability of the detector not being triggered by noise; P2(0; N noi ) is when the average noise photoelectron number of a single pulse is N noi The probability of triggering 0 noise photoelectrons when T gate T is the time from the moment the range gate is opened to the moment the front photon of the echo pulse reaches the detector; pulse is the echo signal pulse width; v n is the total noise rate of the detection process.

[0064] Based on the probability of not being triggered by noise and combined with the signal detection probability, the single pulse detection probability of the space debris laser ranging network is obtained as follows:

[0065] P d =P n ·P s ;

[0066] Among them, P d The single pulse detection probability of the space debris laser ranging network; P n is the probability of the detector not being triggered by noise; P s is the signal detection probability.

[0067] After obtaining the single pulse detection probability of the space debris laser ranging network, it also includes: calculating the detection success probability of the space debris laser ranging network, specifically:

[0068] Assuming that at least one echo is detected successfully per second on average, the target detection is considered successful. The detection success probability of the space debris laser ranging network is as follows:

[0069] P L =1-(1-P d ) f ;

[0070] Among them, P L The detection success probability of the space debris laser ranging network; P dis the single pulse detection probability of the space debris laser ranging network; f is the laser ranging repetition rate. Experiments show that when the laser ranging repetition rate f is 100Hz, the single pulse detection probability P of the space debris laser ranging network is d ≥1%, it can achieve an average of more than one echo signal per second and successfully achieve measurement.

[0071] Embodiment 2:

[0072] Embodiment 2 of the present invention discloses a specific application of a method for evaluating the ranging performance of a space debris laser ranging network (in this application, the number of space debris laser ranging stations in the space debris laser ranging network is 1, which can also be understood as the ranging performance evaluation of the space debris laser ranging network), as follows:

[0073] The performance parameters and related calculation parameters of the existing 100Hz space debris laser ranging system at Kunming Station (the parameters in the table are ideal parameters, and the actual parameters decay with the increase of service life) are shown in Table 1.

[0074] Table 1 Calculation parameters of the success rate of 1.2m laser ranging at Kunming Station

[0075]

[0076] Based on the parameters in Table 1, the relevant formula in a method for evaluating the performance of a space debris laser ranging network is used to calculate the performance of the existing 1.2-meter laser ranging system at Kunming Station under normal conditions (system working conditions, target visibility, environmental conditions, etc.) for a reflection area of ​​1m 2 The single pulse measurement detection rate of space debris at different distances is calculated as follows: Figure 2 shown.

[0077] The calculation results show that when the distance is 1000m, the single pulse measurement detection rate is about 82%. As the distance increases, the success rate continues to decrease. When the distance is 4700km, the single pulse measurement detection rate is about 1%, that is, the existing 100Hz laser ranging system in Kunming Station is only effective for 1m 2 The maximum distance at which space debris can be successfully measured is approximately 4700 km.

[0078] Embodiment 3:

[0079] Embodiment 3 of the present invention discloses a specific application of a method for evaluating the ranging performance of a space debris laser ranging network, as follows:

[0080] The space debris laser ranging network is composed of multiple space debris laser ranging network sites. The performance parameters of each site are basically the same, as shown in Table 2.

[0081] Table 2 Main performance parameters of the site laser ranging system

[0082]

[0083] Still taking the reflection area as 1m 2 The target is used as an example to calculate the single pulse measurement probability when the target distance is 10000km~40000km, and multiple 1.2-meter-diameter telescopes are networked for measurement (usually one space debris laser ranging network site corresponds to one telescope). The calculation results are as follows: Figure 3 shown.

[0084] from Figure 3 It can be seen that when the target distance is 10,000 km, the probability of single-pulse measurement using only one telescope exceeds 5%, which means that measurement can basically be achieved. However, for longer distances, the probability of single-pulse measurement using only one telescope is extremely low, making measurement difficult to achieve.

[0085] The single pulse detection probability is measured synchronously by multiple 1.2m telescopes, as shown in Table 3.

[0086] Table 3 Single pulse detection probability of multiple 1.2m telescopes synchronously measured

[0087] 1 telescope 3 telescopes 5 telescopes 8 telescopes 10 telescopes 10000km 6.859％ 28.13％ 44.74％ 56.53％ 59.16％ 20000km 0.453％ 2.319％ 4.879％ 9.467％ 12.81％ 30000km 0.089％ 0.465％ 0.996％ 2.000％ 2.777％ 36000km 0.043％ 0.225％ 0.483％ 0.973％ 1.355％ 40000km 0.028％ 0.148％ 0.317％ 0.640％ 0.8927％

[0088] As can be seen from Table 3, using 10 telescopes to measure a target with a reflecting area of ​​1m2 at a distance of 36,000km, the single-pulse measurement probability reaches 1.355%. This theoretically calculated probability is slightly higher than the current minimum detection probability of debris experiments (1.07%), so the concept is theoretically feasible.

[0089] Embodiment 4 of the present invention:

[0090] Embodiment 4 of the present invention discloses a specific application of a method for evaluating the ranging performance of a space debris laser ranging network, as follows:

[0091] When multiple telescopes with a diameter of 2 meters are used for synchronous measurement, the 1m 2 The calculation results of the single pulse measurement probability of targets of different sizes at a distance of 1000km to 50000km are as follows: Figure 4 shown.

[0092] The single pulse detection probability is measured synchronously by multiple 2-meter telescopes, as shown in Table 4.

[0093] Table 4 Single pulse detection probability of multiple 2-meter telescopes synchronously measured

[0094] 1 telescope 3 telescopes 5 telescopes 8 telescopes 10 telescopes 10000km 17.9％ 49.85％ 59.06％ 60.47％ 60.50％ 20000km 1.251％ 6.224％ 12.6％ 22.79％ 29.25％ 30000km 0.2492％ 1.283％ 2.728％ 5.394％ 7.402％ 40000km 0.0789％ 0.409％ 0.8768％ 1.761％ 2.447％ 50000km 0.0324％ 0.1679％ 0.3607％ 0.7277％ 1.015％

[0095] Taking the probability of single pulse detection P ≥ 1% of telescope synchronous measurement as the limit, the theoretical limit distance of synchronous measurement of multiple telescopes can be estimated. The results of the limit distance of synchronous measurement of multiple telescopes with an aperture of 2m are shown in Table 5.

[0096] Table 5 Estimation of the maximum measurement distance of multiple telescopes with a diameter of 2m

[0097]

[0098] It can be seen from Table 5 that when one 2m telescope is used, its maximum detection distance is about 21000km (the detection probability is 1.031%); when three 2m telescopes are used, the maximum distance of synchronous measurement is about 31000km (the detection probability is about 1.127%); when five 2m telescopes are used, the maximum distance of synchronous measurement is about 38000km (the detection probability is about 1.075%); when eight 2m telescopes are used, the maximum distance of synchronous measurement is about 46000km (the detection probability is about 1.013%); when ten 2m telescopes are used, the maximum distance of synchronous measurement is about 50000km (the detection probability is about 1.015%).

[0099] Embodiment 5 of the present invention:

[0100] Embodiment 5 of the present invention discloses a space debris laser ranging network networking ranging performance evaluation system using a space debris laser ranging network networking ranging performance evaluation method, including:

[0101] Signal detection probability calculation module: used to calculate the number of single pulse echo photons of the space debris laser ranging network, and based on the Poisson probability distribution, calculate the probability of the detector detecting photoelectrons, and calculate the signal detection probability based on the signal triggering detector conditions;

[0102] Single pulse detection probability calculation module: used to calculate the probability of the detector not being triggered by noise based on Poisson probability distribution, and combine the signal detection probability to obtain the single pulse detection probability of the space debris laser ranging network.

[0103] Embodiment 6 of the present invention:

[0104] Embodiment 6 of the present invention discloses an electronic device, including:

[0105] Memory for storing computer programs;

[0106] A processor is used to implement the steps of a method for evaluating the ranging performance of a space debris laser ranging network when executing a computer program.

[0107] Embodiment 7 of the present invention:

[0108] Embodiment 7 of the present invention discloses a computer-readable storage medium, on which a computer program is stored. When the computer program is executed by a processor, the steps of a method for evaluating the ranging performance of a space debris laser ranging network are implemented.

[0109] The embodiment of the present invention discloses a method, system, device and storage medium for evaluating the ranging performance of a space debris laser ranging network. The present invention calculates the number of single pulse echo photons of the space debris laser ranging network, and based on the Poisson probability distribution, calculates the probability of the detector detecting photoelectrons, and based on the signal triggering detector condition, calculates the signal detection probability, and combines the probability of not being triggered by noise calculated based on the Poisson probability distribution to obtain the final single pulse detection probability of the space debris laser ranging network, thereby achieving an effective accuracy evaluation of the ranging performance of the space debris laser ranging network, and effectively reducing the waste of resources while ensuring that the space debris laser ranging network accurately locates the target.

[0110] In this specification, each embodiment is described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the embodiments can be referred to each other. For the device disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and the relevant parts can be referred to the method part.

[0111] The above description of the disclosed embodiments enables one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A space debris laser ranging network networking ranging performance evaluation method, characterized in that: include: Step 1: Calculate the number of single pulse echo photons of the space debris laser ranging network, and calculate the probability of the detector detecting photoelectrons based on the Poisson probability distribution, and calculate the signal detection probability based on the signal triggering detector conditions; Step 2: Based on the Poisson probability distribution, the probability of the detector not being triggered by noise is calculated, and combined with the signal detection probability, the single pulse detection probability of the space debris laser ranging network is obtained.

2. A space debris laser ranging network networking ranging performance evaluation method according to claim 1, characterized in that: In step 1, the number of single pulse echo photons of the space debris laser ranging network is calculated as follows: Among them, N s is the number of single pulse echo photons in the space debris laser ranging network; N is the number of space debris laser ranging stations in the space debris laser ranging network; E t is the laser pulse laser energy; is Planck's constant; ν is the laser photon frequency; θ d is the laser divergence angle; R is the target distance; Δθ p is the laser beam pointing deviation; Δθ j is the laser beam tracking deviation; A r is the receiving telescope area; η r is the efficiency of the receiving optical system; η c is the detector quantum efficiency; ρ is the target reflectivity; σ is the target reflection area; T a is the one-way atmospheric transmittance; T c is the one-way cirrus transmittance.

3. The method for evaluating the performance of a space debris laser ranging network according to claim 1, characterized in that: In step 1, the probability of the detector detecting a photoelectron is calculated based on the Poisson probability distribution as follows: Among them, P1(k; N s ) is when the average number of photoelectrons in a single pulse is N s When k photoelectrons are generated, the probability is: N s The number of single pulse echo photons for the space debris laser ranging network.

4. The method for evaluating the performance of a space debris laser ranging network according to claim 3, characterized in that: In step 1, based on the signal triggering detector condition, the signal detection probability is calculated, specifically: The signal triggering detector condition is to generate at least one photoelectron, and the signal detection probability is as follows: Among them, P s is the signal detection probability; P1(0; N s ) is when the average number of photoelectrons in a single pulse is N s The probability of producing 0 photoelectrons is .

5. The method for evaluating the performance of a space debris laser ranging network according to claim 1, characterized in that: In step 2, the probability of the detector not being triggered by noise is calculated based on the Poisson probability distribution as follows: N noi =(T gate +T pulse )v n ; Among them, P2(z;N noi ) is when the average noise photoelectron number of a single pulse is N noi The probability of triggering z noise photoelectrons when n is the probability of the detector not being triggered by noise; P2(0; N noi ) is when the average noise photoelectron number of a single pulse is N noi The probability of triggering 0 noise photoelectrons when T gate T is the time from the moment the range gate is opened to the moment the front photon of the echo pulse reaches the detector; pulse is the echo signal pulse width; v n is the total noise rate of the detection process.

6. The method for evaluating the performance of a space debris laser ranging network according to claim 1, characterized in that: In step 2, based on the probability of not being triggered by noise and combined with the signal detection probability, the single pulse detection probability of the space debris laser ranging network is obtained as follows: P d =P n ·P s ; Among them, P d The single pulse detection probability of the space debris laser ranging network; P n is the probability of the detector not being triggered by noise; P s is the signal detection probability.

7. The method for evaluating the performance of a space debris laser ranging network according to claim 1, characterized in that: In step 2, after obtaining the single pulse detection probability of the space debris laser ranging network, it also includes: calculating the detection success probability of the space debris laser ranging network, specifically: Assuming that the target detection is successful if at least one echo is successfully detected per second on average, the detection success probability of the space debris laser ranging network is as follows: P L =1-(1-P d ) f ; Among them, P L is the detection success probability of the space debris laser ranging network; P d is the single pulse detection probability of the space debris laser ranging network; f is the laser ranging repetition rate.

8. A space debris laser ranging network networking ranging performance evaluation system using a space debris laser ranging network networking ranging performance evaluation method according to any one of claims 1 to 7, characterized in that: include: Signal detection probability calculation module: used to calculate the number of single pulse echo photons of the space debris laser ranging network, and based on the Poisson probability distribution, calculate the probability of the detector detecting photoelectrons, and calculate the signal detection probability based on the signal triggering detector conditions; Single pulse detection probability calculation module: used to calculate the probability of the detector not being triggered by noise based on Poisson probability distribution, and combine the signal detection probability to obtain the single pulse detection probability of the space debris laser ranging network.

9. An electronic device, characterized in that: include: Memory for storing computer programs; A processor, configured to implement the steps of a method for evaluating the ranging performance of a space debris laser ranging network as described in any one of claims 1 to 7 when executing the computer program.

10. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores a computer program, and when the computer program is executed by the processor, the steps of the method for evaluating the ranging performance of a space debris laser ranging network as described in any one of claims 1 to 7 are implemented.

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