CN114779284A

CN114779284A - Satellite navigation receiver military code signal capturing function test method

Info

Publication number: CN114779284A
Application number: CN202210315824.2A
Authority: CN
Inventors: 谢淳芳; 张勇虎; 伍俊; 戴志春
Original assignee: Hunan Snr Information Technology Co ltd
Current assignee: Hunan Snr Information Technology Co ltd
Priority date: 2022-03-29
Filing date: 2022-03-29
Publication date: 2022-07-22
Anticipated expiration: 2042-03-29
Also published as: CN114779284B

Abstract

The application discloses a method for testing acquisition function of military code signals of a satellite navigation receiver, which comprises the following steps: receiving a real civil satellite navigation signal in an outfield real environment, resolving the real civil satellite navigation signal and outputting a current PVT navigation result, and completing the synchronous operation of satellite ephemeris acquisition, signal time synchronization and reference clock synchronization; generating and broadcasting corresponding civil code deception satellite navigation signals and time service signals in an external field real environment according to the acquired satellite ephemeris, synchronous signal time and actual test requirements; controlling a satellite navigation receiver to start a military code signal capturing function, and receiving a satellite navigation signal and the time service signal; and according to the capturing of military code signals of the satellite navigation receiver and the PVT navigation resolving condition, testing of the military code signal capturing function of the satellite navigation receiver under the conditions of an outfield real complex environment and real military code signals is completed. The method and the device ensure the reliability of the test result of the receiver military code signal capture function test method.

Description

Satellite navigation receiver military code signal capture function test method

Technical Field

The application relates to the technical field of satellite navigation simulation, in particular to a method for testing military code signal capture function of a satellite navigation receiver.

Background

The GNSS global navigation satellite system is a satellite navigation system capable of providing PVT navigation solution (three-dimensional position, velocity, time) in the global scope. The current mainstream GNSS navigation systems include the beidou system (BDS) in china, the GLONASS system (GLONASS) in russia, the Global Positioning System (GPS) in the united states, and the GALILEO system (GALILEO) in europe.

In each satellite navigation system, signals are modulated by adopting a code division multiple access method, and common pseudo code modulation methods are divided into civil codes and military codes. The civil code is a public code, the code period is short, and a satellite navigation receiver can quickly capture the civil code and is mainly applied to the public civil field; military codes are encryption codes, have long code periods and high code rates, have strong anti-interference performance and anti-cheating performance compared with civil codes, and have higher positioning accuracy, so the military codes are widely applied to the key fields of military, national defense and the like.

Because military code signal code period is long, the code rate is high, the satellite navigation receiver can not directly capture, and the military code signal can be captured according to correct time information only after the time of the current signal is known.

For a satellite navigation receiver with military code signal acquisition capability, there are 2 general military code signal acquisition methods, which are described as follows:

1) the military code direct catching method comprises the following steps: the satellite navigation receiver acquires correct signal time from an external interface, and then captures military code signals and outputs PVT navigation resolving results of the military code signals.

2) The method for capturing civil code guided military code comprises the following steps: the satellite navigation receiver firstly obtains correct signal time from the acquired civil code signal, then acquires the military code signal and outputs a PVT navigation resolving result of the military code signal.

At present, the test of the military code signal capturing capability function of a satellite navigation receiver is mainly carried out in a simulation environment, and a navigation signal simulator is used for simulating a civil code signal, a military code signal and a time service signal to complete the test of related contents. However, there are two drawbacks to using this approach: firstly, the simulated broadcast signal is a pure signal and has great difference with the signal containing multipath, interference, noise and other environmental factors in the real environment; secondly, the military code signals which are simulated and transmitted are mostly test codes, and are different from formal military code signals in a real complex environment, and the power of the military code signals which are simulated and transmitted is also different from the power of the military code signals in the real complex environment. Therefore, the test result in the simulation environment cannot completely express the acquisition capability of the satellite navigation receiver military code signal.

In the current method, under the real environment of an external field, due to the influence of an existing civil code signal, a satellite navigation receiver can directly calculate time and a correct PVT navigation result from the civil code signal, so that in the test process of the military code signal capturing capability: 1) the PVT navigation result of the output military code signal can not be judged to be output by using the military code signal or the civil code signal; 2) the time of the civil code signal or the time of the time service signal used when the military code is directly captured cannot be judged. Thus, the test result is not reliable. Therefore, currently, the related test cannot be completed under the signal conditions of the outfield real complex environment and the real military code.

Disclosure of Invention

In one aspect, a preferred embodiment of the present application provides a method for testing a military code signal capture function of a satellite navigation receiver, so as to solve the technical problem that a test result of a test method for a military code signal capture function of a satellite navigation receiver under the conditions that a test result in an existing simulation environment cannot completely represent the capture capability of a military code signal of a satellite navigation receiver, an outfield real complex environment, and a real military code signal cannot be trusted.

The technical scheme adopted by the application is as follows:

a method for testing acquisition function of military code signals of a satellite navigation receiver comprises the following steps:

receiving a real civil code satellite navigation signal in an external field real environment, resolving the real civil code satellite navigation signal, outputting a current PVT navigation result, and completing signal synchronization operation of satellite ephemeris acquisition, signal time synchronization and reference clock synchronization, wherein the real civil code satellite navigation signal comprises a real civil code satellite navigation signal based on a Beidou system, a real civil code satellite navigation signal based on a Glonass system, a real civil code satellite navigation signal based on a global positioning system and a real civil code satellite navigation signal based on a Galileo system;

generating and broadcasting a corresponding civil code deception satellite navigation signal in an external field real environment according to the acquired satellite ephemeris and actual test requirements, and generating and broadcasting a corresponding time service signal for time service in the external field real environment according to synchronous signal time and actual test requirements, wherein the civil code deception satellite navigation signal is provided with corresponding signal position offset, signal time offset and power offset relative to a real civil code satellite navigation signal, and the power of the civil code deception satellite navigation signal is greater than that of the real civil code satellite navigation signal; the time service signal is provided with a corresponding signal time offset relative to the current real civil satellite navigation signal;

controlling a satellite navigation receiver to start a military code signal capturing function, receiving a satellite navigation signal and the time service signal, wherein the satellite navigation signal comprises a real civil code satellite navigation signal, a real military code signal, a civil code deception satellite navigation signal and an abnormal signal, and the abnormal signal comprises multipath, noise and an interference signal in an external field real environment;

and according to the acquisition of military code signals of the satellite navigation receiver and the PVT navigation resolving condition, testing the acquisition function of the military code signals of the satellite navigation receiver under the conditions of an outfield real complex environment and real military code signals.

As a preferred embodiment, completing the satellite ephemeris acquisition comprises the steps of:

directly resolving a received satellite navigation signal ephemeris from a received real civil code satellite navigation signal to complete ephemeris acquisition;

or,

and using an independent wireless network module to acquire signal ephemeris of all satellites of a Beidou system, a Glonass system, a global positioning system and a Galileo system at the current time from a wireless network to finish ephemeris acquisition, wherein the wireless network comprises 2G, 3G, 4G and 5G wireless networks.

As a preferred embodiment, the signal synchronization operation of signal time synchronization and reference clock synchronization specifically includes the steps of:

analyzing the real time of the signal and the signal reference clock of the real civil code satellite navigation signal;

setting the real time of the obtained signal as the time of the test equipment and continuously keeping the synchronism of the time, and synchronizing the clock of the test equipment with the obtained signal reference clock and continuously keeping the synchronism of the clock.

As a preferred embodiment, the civil code deception satellite navigation signal includes an civil code deception satellite navigation signal based on a Beidou system, an civil code deception satellite navigation signal based on a Glonass system, an civil code deception satellite navigation signal based on a global positioning system, and an civil code deception satellite navigation signal based on a Galileo system, wherein when a signal position offset of the civil code deception satellite navigation signal is 0m and a signal time offset is 0s, a visible satellite, a space diagram distribution, a signal position and a signal time of the civil code deception satellite navigation signal are all consistent with a situation of a real civil code satellite navigation signal.

As a preferred embodiment, when the satellite navigation receiver is placed in an infield application scene, after an civil code spoofing satellite navigation signal and a time service signal are generated and broadcast, the satellite navigation receiver is controlled to start a military code signal capturing function, and before the satellite navigation signal and the time service signal are received, the method further comprises the following steps:

in an external field application scene, synchronously recording an accessed satellite navigation signal and a time service signal, and storing the satellite navigation signal and the time service signal in a file form, wherein the satellite navigation signal comprises a real civil code satellite navigation signal, a real military code signal, a civil code deception satellite navigation signal and an abnormal signal, and the abnormal signal comprises multipath, noise and an interference signal in an external field real environment;

and in an internal field application scene, synchronously restoring the recorded and stored satellite navigation signal and the time service signal.

As a preferred embodiment, according to the capturing and PVT navigation resolving conditions of the satellite navigation receiver military code signal, the test of the satellite navigation receiver military code signal capturing function under the conditions of the outfield real complex environment and the real military code signal is completed, which specifically includes the steps of:

outputting a false position with enough offset with a real position after a satellite navigation receiver which finishes cold start captures and tracks the civil code deception satellite navigation signal;

if the PVT navigation result of the satellite navigation receiver using the civil code deception satellite navigation signal is output as the PVT navigation result of the military code signal, the military code positioning result can be obviously shown to be abnormal, and the military code capturing function of the satellite navigation receiver is judged to be abnormal.

As a preferred embodiment, according to the acquired satellite ephemeris and the actual test requirement, generating and broadcasting a corresponding civil code deception satellite navigation signal in the external field real environment, and simultaneously according to the synchronized signal time and the actual test requirement, generating and broadcasting a corresponding time service signal for time service in the external field real environment, specifically comprising the steps of:

if the military code direct catching function of the satellite navigation receiver needs to be tested, setting the signal time offset of the civil code deception satellite navigation signal to be out of the time uncertainty of the satellite navigation receiver when the civil code deception satellite navigation signal is generated and broadcast, and setting the time offset of the time service signal to be 0 when the time service signal is generated and broadcast.

As a preferred embodiment, according to the capturing and PVT navigation resolving conditions of the military code signal of the satellite navigation receiver, the test of the military code signal capturing function of the satellite navigation receiver under the conditions of the outfield real complex environment and the real military code signal is completed, which specifically includes the following steps:

testing the military code direct capturing function of the satellite navigation receiver, if the satellite navigation receiver normally captures a military code signal, judging that the satellite navigation receiver uses the time of the time service signal obtained from an external interface to capture the military code signal, judging that the military code direct capturing function of the satellite navigation receiver is normal, and otherwise, judging that the military code direct capturing function of the satellite navigation receiver is abnormal.

As a preferred embodiment, according to the acquired satellite ephemeris and the actual test requirement, generating and broadcasting a corresponding civil code deception satellite navigation signal in the outfield real environment, and simultaneously according to the synchronized signal time and the actual test requirement, generating and broadcasting a corresponding time service signal for time service in the outfield real environment, specifically comprising the steps of:

if the civil code guide military code capture function of the satellite navigation receiver needs to be tested, setting the time offset of the time signal to be beyond the time uncertainty of the satellite navigation receiver when the time signal is generated and broadcasted, and setting the time offset of the civil code deception satellite navigation signal to be 0 when the civil code deception satellite navigation signal is generated and broadcasted.

the method comprises the steps of testing the civil code guiding military code capturing function of a satellite navigation receiver, if the satellite navigation receiver captures a military code signal normally, judging that the satellite navigation receiver uses the time of deceiving the satellite navigation signal by the civil code to capture the military code signal, judging that the civil code guiding military code function of the satellite navigation receiver is normal, and otherwise, judging that the civil code guiding military code capturing function of the satellite navigation receiver is abnormal.

Another preferred embodiment of the present application further provides a satellite navigation receiver military code signal acquisition function testing apparatus, including:

the system comprises a space navigation signal synchronization module, a satellite navigation signal synchronization module and a satellite navigation signal synchronization module, wherein the space navigation signal synchronization module is used for receiving a real civil satellite navigation signal in an outfield real environment, resolving the real civil satellite navigation signal and outputting a current PVT navigation result, and completing signal synchronization operations of satellite ephemeris acquisition, signal time synchronization and reference clock synchronization, wherein the real civil satellite navigation signal comprises a real civil satellite navigation signal based on a Beidou system, a real civil satellite navigation signal based on a Glonass system, a real civil satellite navigation signal based on a global positioning system and a real civil satellite navigation signal based on a Galileo system;

the civil code deception satellite navigation signal generation module is used for generating and broadcasting corresponding civil code deception satellite navigation signals in an external field real environment according to the acquired satellite ephemeris and actual test requirements, wherein the civil code deception satellite navigation signals are provided with corresponding signal position offset, signal time offset and power offset relative to the real civil code satellite navigation signals, and the power of the civil code deception satellite navigation signals is greater than that of the real civil code satellite navigation signals;

the time service signal generation module is used for generating and broadcasting a corresponding time service signal for time service in an external field real environment according to synchronous signal time and actual test requirements, and the time service signal is provided with a corresponding signal time offset relative to a current real civil code satellite navigation signal;

the receiver control module is used for controlling the satellite navigation receiver to start a military code signal capturing function and receiving satellite navigation signals and the time service signals, wherein the satellite navigation signals comprise the real civil code satellite navigation signals, the real military code signals, the civil code deception satellite navigation signals and abnormal signals, and the abnormal signals comprise multipath, noise and interference signals in an external field real environment;

and the military code capturing test module is used for completing the test of the military code signal capturing function of the satellite navigation receiver under the conditions of the outfield real complex environment and the real military code signal according to the capturing and PVT navigation resolving conditions of the military code signal of the satellite navigation receiver.

As a preferred embodiment, the satellite navigation receiver military code signal acquisition function testing device further comprises:

the signal recording module is used for synchronously recording accessed satellite navigation signals and time service signals and storing the satellite navigation signals and the time service signals in a file form, wherein the satellite navigation signals comprise real civil code satellite navigation signals, real military code signals, civil code deception satellite navigation signals and abnormal signals, and the abnormal signals comprise multipath, noise and interference signals in an external field real environment;

and the signal restoring module is used for synchronously restoring the recorded and stored satellite navigation signal and the time service signal.

A preferred embodiment of another aspect of the present application also provides an electronic device, which includes a memory, a processor and a computer program stored in the memory and executable on the processor, wherein the processor implements the steps of the satellite navigation receiver military code signal acquisition function test method when executing the program.

A preferred embodiment of another aspect of the present application further provides a storage medium, which includes a stored program, and when the program is executed, the storage medium controls a device on which the storage medium is located to execute the steps of the satellite navigation receiver military code signal acquisition function test method.

Compared with the prior art, the method has the following beneficial effects:

the application provides a test method for military code signal capture function of a satellite navigation receiver, which comprises the steps of setting civil code deception satellite navigation signals and time service signals with corresponding position offset, time offset and power offset on the basis of real civil code satellite navigation signals, removing the adverse effects of civil code signal time, a PVT position result of the civil code signals and the time service signals, and testing the military code capture function of the satellite navigation receiver in an external field application scene or an internal field application scene under the conditions of an external field real complex environment and the real military code signals, creatively broadcasting the civil code deception signals and the time service signals, and simultaneously setting the power offset, the position offset, the time offset and the time service signal time offset of the civil code deception signals relative to the real civil code signals according to the actual situation, thereby solving the problems in the external field application scene or the internal field application scene, the method solves the technical problems of incomplete test coverage and unreliable test results of the conventional test method for the military code signal capturing function of the satellite navigation receiver in the real complex environment of the external field and under the condition of the real military code signal.

In addition to the above-described objects, features and advantages, there are other objects, features and advantages of the present application. The present application will now be described in further detail with reference to the accompanying drawings.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the application and, together with the description, serve to explain the application and are not intended to limit the application. In the drawings:

fig. 1 is a schematic diagram of an implementation environment provided by an embodiment of the present application.

Fig. 2 is a schematic flowchart of a method for testing a military code signal acquisition function of a satellite navigation receiver according to a preferred embodiment of the present application.

Fig. 3 is a flow chart illustrating the sub-steps of step S1 in the preferred embodiment of the present application.

Fig. 4 is a schematic diagram of another implementation environment provided by the embodiments of the present application.

Fig. 5 is a flowchart illustrating a method for testing acquisition function of military code signal of a satellite navigation receiver according to another preferred embodiment of the present application.

Fig. 6 is a flow chart illustrating the sub-steps of step S4 in another preferred embodiment of the present application.

Fig. 7 is a flow chart illustrating the sub-steps of step S2 in another preferred embodiment of the present application.

Fig. 8 is a flow chart illustrating the sub-steps of step S4 in another preferred embodiment of the present application.

Fig. 9 is a flow chart illustrating the sub-steps of step S2 in another preferred embodiment of the present application.

Fig. 10 is a schematic flow chart illustrating the sub-step of step S4 in another preferred embodiment of the present application.

Fig. 11 is a schematic block diagram of a satellite navigation receiver military code signal acquisition function testing device according to a preferred embodiment of the present application.

Fig. 12 is a schematic block diagram of a satellite navigation receiver military code signal acquisition function testing device according to another preferred embodiment of the present application.

Fig. 13 is a schematic block diagram of an electronic device entity of the preferred embodiment of the present application.

Fig. 14 is an internal structural view of a computer device of the preferred embodiment of the present application.

Detailed Description

It should be noted that, in the present application, the embodiments and features of the embodiments may be combined with each other without conflict. The present application will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

Fig. 1 is a schematic diagram of an implementation environment provided in an embodiment of the present application, and referring to fig. 1, the implementation environment includes: the test equipment is arranged in an external field application scene and is provided with a receiving antenna and a transmitting antenna, and the satellite navigation receiver is also arranged in the external field application scene. The satellite navigation receiver is provided with a receiving antenna or a separate external receiving antenna. The test device and the satellite navigation receiver may be directly or indirectly connected through wired or wireless communication, which is not limited herein.

Referring to fig. 2, a preferred embodiment of the present application provides a method for testing acquisition function of military code signals of a satellite navigation receiver, comprising the steps of:

s1, receiving a real civil code satellite navigation signal in an outfield real environment by testing equipment, resolving the real civil code satellite navigation signal, outputting a current PVT navigation result, and completing signal synchronization operations of satellite ephemeris acquisition, signal time synchronization and reference clock synchronization, wherein the real civil code satellite navigation signal comprises a real civil code satellite navigation signal based on a Beidou system, a real civil code satellite navigation signal based on a Glonass system, a real civil code satellite navigation signal based on a global positioning system and a real civil code satellite navigation signal based on a Galileo system;

s2, generating and broadcasting a corresponding civil code deception satellite navigation signal in an external field real environment by the testing equipment according to the acquired satellite ephemeris and the actual testing requirement, and generating and broadcasting a corresponding time service signal for time service in the external field real environment according to the synchronous signal time and the actual testing requirement, wherein the civil code deception satellite navigation signal is provided with a corresponding signal position offset, a signal time offset and a power offset relative to the real civil code satellite navigation signal, and the power of the civil code deception satellite navigation signal is greater than that of the real civil code satellite navigation signal; the time service signal is provided with a corresponding signal time offset relative to the current real civil satellite navigation signal;

s3, controlling a satellite navigation receiver to start a military code signal capturing function by test equipment, and receiving satellite navigation signals and the time service signals, wherein the satellite navigation signals comprise real civil code satellite navigation signals, real military code signals, civil code deception satellite navigation signals and abnormal signals, and the abnormal signals comprise multipath, noise and interference signals in an external field real environment;

and S4, the test equipment completes the test of the military code signal acquisition function of the satellite navigation receiver under the conditions of the outfield real complex environment and the real military code signal according to the acquisition of the military code signal of the satellite navigation receiver and the PVT navigation resolving condition.

The embodiment provides a satellite navigation receiver military code signal capture function test method, which comprises the steps of setting a civil code deception satellite navigation signal and a time service signal with corresponding position offset, time offset and power offset on the basis of a real civil code satellite navigation signal, removing the adverse effects of civil code signal time, a PVT (physical vapor transport) position result of the civil code signal and the time service signal, and testing the satellite navigation receiver military code capture function in an external field application scene or an internal field application scene under the conditions of an external field real complex environment and the real civil code signal, creatively broadcasting the civil code deception signal and the time service signal with corresponding offset, simultaneously controlling the power offset, the position offset, the time offset and the time service signal time offset of the civil code deception signal relative to the real civil code signal, and solving the problems in the external field application scene or the internal field application scene, the method solves the technical problems of incomplete test coverage and unreliable test results of the conventional test method for the military code signal capturing function of the satellite navigation receiver in the real complex environment of the external field and under the condition of the real military code signal.

In a preferred embodiment of the present application, the real civil code satellite navigation signals include a real civil code satellite navigation signal based on the beidou system (BDS), a real civil code satellite navigation signal based on the GLONASS system (GLONASS), a real civil code satellite navigation signal based on the Global Positioning System (GPS), a real civil code satellite navigation signal based on the GALILEO system (GALILEO).

In a preferred embodiment of the present application, completing the satellite ephemeris acquisition comprises the steps of:

and directly resolving the ephemeris of the received satellite navigation signal from the real civil code satellite navigation signal received by the testing equipment to finish ephemeris acquisition.

The satellite ephemeris of the embodiment is obtained by analyzing the real civil code satellite navigation signals received by the testing equipment, and the satellite ephemeris is acquired by using the real civil code satellite navigation signals, so that the deception signals of the civil codes broadcasted by the testing equipment can be ensured, the satellite numbers, the distribution of the star sky maps and other signals participating in the satellite navigation signals of the real civil codes are basically consistent, and the deception signals of the real civil codes are ensured to be generated.

the test equipment acquires signal ephemeris of all satellites of a Beidou system, a Glonass system, a global positioning system and a Galileo system at the current time from a wireless network by using an independent wireless network module to complete ephemeris acquisition, wherein the wireless network comprises 2G, 3G, 4G and 5G wireless networks.

Different from the foregoing embodiment, the satellite ephemeris in this embodiment is obtained from a wireless network by using a separate wireless network module by a testing device, where the wireless network includes 2G, 3G, 4G, and 5G wireless networks, and the satellite ephemeris obtained by using the wireless network includes all satellite ephemeris of each satellite navigation system, and is irrelevant to whether a satellite is visible at the current position. The ephemeris obtained by the method can ensure that the test equipment generates deception signals of the real civil code signals, and can avoid the problems that the power of some current visible satellites is abnormally low and cannot be stably received due to adverse factors such as multipath, interference and shielding in a test environment, the satellite ephemeris cannot be acquired, the number of the transmitted deception signals of the civil code is less than that of the satellites of the real civil code signals, and civil code deception is not thorough.

As shown in fig. 3, in the preferred embodiment of the present application, the signal synchronization operation of the signal time synchronization and the reference clock synchronization specifically includes the steps of:

s11, analyzing the real time and the signal reference clock of the real civil code satellite navigation signal by the test equipment;

and S12, the test equipment sets the real time of the obtained signal as the time of the test equipment and keeps the synchronism of the time, and synchronizes the clock of the test equipment with the reference clock of the obtained signal and keeps the synchronism of the clock.

In this embodiment, the testing device sets the time and the clock of itself to the real time of the signal of the real civil code satellite navigation signal obtained by analysis and the signal reference clock, and keeps synchronization continuously, which aims to ensure that the generated civil code deception signal is synchronized with the real civil code signal without setting time and position offset of the generated civil code deception signal, so as to achieve a real signal deception effect.

In a preferred embodiment of the present application, the civil code deception satellite navigation signal includes a civil code deception satellite navigation signal based on a beidou system, a civil code deception satellite navigation signal based on a glonass system, a civil code deception satellite navigation signal based on a global positioning system, and a civil code deception satellite navigation signal based on a galileo system, wherein when a signal position offset of the civil code deception satellite navigation signal is 0m and a signal time offset is 0s, a visible satellite, a star map distribution, a signal position, and a signal time of the civil code deception satellite navigation signal are all consistent with a situation of a real civil code satellite navigation signal.

In the embodiment, the civil code deception satellite navigation signal can be used for various navigation systems in the mainstream at present, so that the application range of the civil code deception satellite navigation signal is widened, and meanwhile, when the signal position offset of the civil code deception satellite navigation signal is 0m and the signal time offset is 0s, the visible satellite, the star-sky-pattern distribution, the signal position and the signal time of the civil code deception satellite navigation signal are consistent with the situation of the real civil code satellite navigation signal, so that the civil code deception signal and the real civil code signal are synchronized, and the real signal deception effect is achieved.

In a preferred embodiment of the present application, the test device generates and broadcasts an civil code deception satellite navigation signal in an external field real environment according to the collected satellite ephemeris, which specifically includes the following steps:

and the test equipment recalculates the satellite observation value according to the acquired satellite ephemeris, the set signal position offset, the set signal time offset and the set power offset, and generates and broadcasts the civil code deception satellite navigation signal after the satellite ephemeris.

The embodiment describes the generation process of the civil code deception satellite navigation signal in detail, and the generation process is mainly generated by setting a corresponding signal position offset, a signal time offset and a power offset to recalculate a satellite observation value and a satellite ephemeris on the basis of the satellite ephemeris of the acquired real civil code satellite navigation signal by the testing equipment. The signal position of the civil code deception satellite navigation signal can be freely set relative to the position offset of the real civil code satellite navigation signal, the signal time of the civil code deception satellite navigation signal can be freely set relative to the time offset of the real civil code satellite navigation signal, meanwhile, the signal power of the civil code deception satellite navigation signal can be freely set relative to the signal power offset of the real civil code satellite navigation signal, at the moment, the signal power of the civil code deception satellite navigation signal is set to be larger than the signal power of the real civil code satellite navigation signal, when the satellite navigation receiver which is cold started searches for the satellite signal, the high-power satellite signal is preferentially captured, and the real civil code satellite navigation signal with relatively small power is regarded as a multipath signal and is not processed. The testing equipment can recalculate satellite observation values, satellite ephemeris and other information according to the acquired ephemeris information, new signal time and new signal position and then broadcast a deception satellite navigation signal of the deception satellite.

Specifically, the time service signal in the above embodiment is generated according to a signal time synchronized by the test device, and can keep synchronization with the signal time, the signal time can be freely set relative to a signal time offset of a real civil code satellite navigation signal, and the time service signal can be broadcast according to an agreed protocol, and can be sent to a satellite navigation receiver through an agreed external interface for accurate time service.

Fig. 4 is a schematic diagram of another implementation environment provided in an embodiment of the present application, and referring to fig. 4, the implementation environment includes: the test equipment is used for testing a military code signal capturing function of the satellite navigation receiver, the satellite navigation receiver is used for placing the test equipment with a receiving antenna and a transmitting antenna in an external field application scene during signal recording, moving the test equipment to an internal field application scene during signal reduction, and simultaneously placing the satellite navigation receiver in the internal field application scene. The satellite navigation receiver is provided with a receiving antenna or a separate external receiving antenna. The test device and the satellite navigation receiver are directly or indirectly connected through wired or wireless communication, and the application is not limited herein.

Referring to fig. 5, another preferred embodiment of the present application provides a method for testing acquisition function of satellite navigation receiver military code signals, comprising the steps of:

s1, the test equipment receives a real civil code satellite navigation signal in an outfield real environment, resolves the real civil code satellite navigation signal and outputs a current PVT navigation result, and completes signal synchronization operations of satellite ephemeris acquisition, signal time synchronization and reference clock synchronization, wherein the real civil code satellite navigation signal comprises a real civil code satellite navigation signal based on a Beidou system, a real civil code satellite navigation signal based on a Glonass system, a real civil code satellite navigation signal based on a global positioning system and a real civil code satellite navigation signal based on a Galileo system;

s3, in an external field application scene, synchronously recording an accessed satellite navigation signal and a time service signal by test equipment, and storing the satellite navigation signal and the time service signal in a file form, wherein the satellite navigation signal comprises a real civil code satellite navigation signal, a real military code signal, a civil code deception satellite navigation signal and an abnormal signal, and the abnormal signal comprises multipath, noise and an interference signal in an external field real environment;

s4, in an internal application scene, the test equipment synchronously restores the recorded and stored satellite navigation signal and the time service signal;

s5, controlling a satellite navigation receiver to start a military code signal capturing function by test equipment, and receiving a restored satellite navigation signal and the time service signal, wherein the satellite navigation signal comprises a real civil code satellite navigation signal, a real military code signal, a civil code deception satellite navigation signal and an abnormal signal, and the abnormal signal comprises multipath, noise and an interference signal in an external field real environment;

and S6, testing the military code signal capturing function of the satellite navigation receiver under the conditions of the outfield real complex environment and the real military code signal by the testing equipment according to the capturing and PVT navigation resolving conditions of the military code signal of the satellite navigation receiver.

Unlike the previous embodiments, since the satellite navigation receiver is located in an infield application scenario, therefore, before the test equipment tests the satellite navigation receiver military code signal capture function, the embodiment synchronously records the satellite navigation signal and the time service signal in advance, then when the acquisition function of the satellite navigation receiver military code signal needs to be tested, the satellite navigation signal and the time service signal which are recorded in advance are synchronously restored and reproduced and then are transmitted to the satellite navigation receiver to be tested, after a section of satellite navigation signal and the time service signal are synchronously recorded in the embodiment as the test signal, the test signal can be repeatedly used in an internal field application scene, and compared with the test in the external field application scene, the test signal can solve the problem that the test signal in the external field application scene is not reproducible on one hand; on the other hand, the embodiment can keep the consistency of the test signals, can use the same section of test signals to test the military code signal capture function of the satellite navigation receivers in different batches, can evaluate the consistency of the test results, and greatly improves the efficiency and the reliability of the test.

In this embodiment, the satellite navigation signals recorded and restored by the test equipment include real military code signals, real civil code signals, and abnormal signal conditions such as multipath, noise, interference and the like of four satellite navigation systems including a compass system (BDS) in china, a GLONASS system (GLONASS) in russia, a Global Positioning System (GPS) in the united states, and a GALILEO system (GALILEO) in europe, and the test equipment can reproduce the recorded satellite navigation signals in a restoration manner, including information such as visible satellite conditions, satellite space diagram distribution conditions, time for signal resolving, three-dimensional position, speed, and signal interference conditions; meanwhile, the test equipment can record and restore the time service signal, and the synchronism of the time service signal and the satellite navigation signal is kept in the recording and restoring processes.

It can be understood that, in the above embodiment, the power of the civil code deception satellite navigation signal is set to be greater than the power of the real civil code satellite navigation signal, and since the layout of the satellite number, the frequency point, and the star-sky pattern of the broadcast civil code deception satellite navigation signal is consistent with that in the real environment, the satellite navigation receiver that is cold-started at this time can capture and track the signal with the maximum power (i.e., the civil code deception satellite navigation signal) detected, and the signal with low power (including the real civil code satellite navigation signal) is regarded as a multipath signal and is not processed, so that the problem that the military code capture function test result is not credible due to the real civil code satellite navigation signal in the environment is solved.

As shown in fig. 6, in the preferred embodiment of the present application, according to the acquisition of military code signals of a satellite navigation receiver and the PVT navigation solution condition, the test of the acquisition function of military code signals of a satellite navigation receiver under the conditions of an outfield real complex environment and real military code signals is completed, which specifically includes the following steps:

s41, outputting a false position with enough offset from the real position after the satellite navigation receiver after cold start captures and tracks the civil deception satellite navigation signal;

s42, if the PVT navigation result of the satellite navigation receiver using the civil code deception satellite navigation signal is output as the PVT navigation result of the military code signal, the military code positioning result can be obviously shown to be abnormal, and the military code capturing function of the satellite navigation receiver is judged to be abnormal.

In the test process, the position offset of the civil code deception satellite navigation signal is set to be far enough, so that after the satellite navigation receiver which is finished by cold start captures and tracks the civil code deception satellite navigation signal, a false position far enough from the real position can be output, if the PVT navigation result of the civil code deception satellite navigation signal is used as the PVT navigation result of the military code signal by the satellite navigation receiver to be output, the military code positioning result can be obviously shown to be abnormal, the military code capturing function of the satellite navigation receiver can be judged to be abnormal, and the problem that the test result of the military code signal capturing function is not credible due to the PVT position result output by the existing real civil code satellite navigation signal can be solved.

As shown in fig. 7, in the preferred embodiment of the present application, according to the acquired satellite ephemeris and the actual test requirement, a corresponding civil code deception satellite navigation signal is generated and broadcast in the external field real environment, and simultaneously according to the synchronized signal time and the actual test requirement, a corresponding time service signal for time service is generated and broadcast in the external field real environment, which specifically includes the steps of:

s201, if the military code direct catching function of the satellite navigation receiver needs to be tested, when the test equipment generates and broadcasts civil code deception satellite navigation signals, setting the signal time offset of the civil code deception satellite navigation signals to be beyond the time uncertainty of the satellite navigation receiver, and meanwhile, when the time service signals are generated and broadcast, setting the time offset of the time service signals to be 0.

As shown in fig. 8, on the basis of the above setting, according to the capturing and PVT navigation resolving conditions of the military code signal of the satellite navigation receiver, the test of the military code signal capturing function of the satellite navigation receiver under the conditions of the outfield real complex environment and the real military code signal is completed, which specifically includes the steps of:

s401, testing the military code direct capturing function of the satellite navigation receiver by testing equipment, if the military code signal is normally captured by the satellite navigation receiver, judging that the military code signal is captured by the satellite navigation receiver by using the time of the time service signal obtained from an external interface, judging that the military code direct capturing function of the satellite navigation receiver is normal, and otherwise, judging that the military code direct capturing function of the satellite navigation receiver is abnormal.

In the test process, when the test equipment tests the military code direct acquisition method of the satellite navigation receiver, according to the method definition, the satellite navigation receiver acquires correct signal time from the external interface and acquires the military code signal. Therefore, the test equipment of this embodiment sets the signal time offset of the civil code deception satellite navigation signal to be outside the time uncertainty of the satellite navigation receiver when generating and broadcasting the civil code deception satellite navigation signal, and sets the time offset of the time service signal to be 0 when generating and broadcasting the time service signal, at this time, if the satellite navigation receiver uses the time of the civil code deception satellite navigation signal to perform military code direct capture, the military code signal cannot be captured because the offset of the civil code deception satellite navigation signal from the real time is outside the time uncertainty of the navigation satellite receiver; if the satellite navigation receiver uses the time of the time service signal, the military code signal can be normally captured, therefore, in this embodiment, if the satellite navigation receiver normally captures the military code signal, it is determined that the satellite navigation receiver must use the time of the time service signal to capture the military code signal instead of the signal time of the civil code deception satellite navigation signal, so as to determine that the military code direct capturing function of the satellite navigation receiver is normal, otherwise, if the satellite navigation receiver cannot normally capture the military code signal, it is determined that the military code direct capturing function of the satellite navigation receiver is abnormal. The method can solve the problem that the military code acquisition function test result is not reliable due to the real civil code satellite navigation signal time in the military code direct acquisition method.

As shown in fig. 9, in a preferred embodiment of the present application, according to the acquired satellite ephemeris and the actual test requirement, a corresponding civil code deception satellite navigation signal is generated and broadcast in the external field real environment, and according to the synchronized signal time and the actual test requirement, a corresponding time service signal for time service is generated and broadcast in the external field real environment, which specifically includes the steps of:

s211, if the civil code guide military code capturing function of the satellite navigation receiver needs to be tested, setting the time offset of the time signal to be beyond the time uncertainty of the satellite navigation receiver when the test equipment generates and broadcasts the time signal, and setting the time offset of the civil code deception satellite navigation signal to be 0 when the civil code deception satellite navigation signal is generated and broadcasted.

As shown in fig. 10, on the basis of the above setting, according to the capturing and PVT navigation resolving conditions of the military code signal of the satellite navigation receiver, the test of the military code signal capturing function of the satellite navigation receiver under the conditions of the outfield real complex environment and the real military code signal is completed, which specifically includes the steps of:

s411, testing the civil code guiding military code capturing function of the satellite navigation receiver, if the satellite navigation receiver normally captures a military code signal, judging that the satellite navigation receiver uses the time of deceiving the satellite navigation signal by the civil code to capture the military code signal, judging that the civil code guiding military code of the satellite navigation receiver is normal in function, otherwise, judging that the civil code guiding military code capturing function of the satellite navigation receiver is abnormal.

In the test process, when the test equipment tests the civil code guided military code acquisition method of the satellite navigation receiver, according to the method definition, the satellite navigation receiver acquires correct signal time from the acquired real civil code satellite navigation signal and then acquires the military code signal. Therefore, when the test equipment generates and broadcasts the time service signal, setting the signal time offset of the time service signal to be beyond the time uncertainty of the satellite navigation receiver, and simultaneously, when the civil code deception satellite navigation signal is generated and broadcasted, setting the time offset of the civil code deception satellite navigation signal to be 0, wherein at the moment, if the satellite navigation receiver uses the time of the civil code deception satellite navigation signal to carry out civil code guide military code capture, the military code signal can be normally captured; if the satellite navigation receiver uses the time of the time service signal, the offset of the time service signal from the real time is beyond the uncertainty of the time of the navigation satellite receiver, so that the military code signal cannot be captured. Therefore, in this embodiment, if the satellite navigation receiver normally captures a military code signal, it is determined that the satellite navigation receiver must use the time of the civil code spoofing the satellite navigation signal to capture the military code signal instead of the signal time of the time service signal, so as to determine that the civil code guided military code capturing function of the satellite navigation receiver is normal, otherwise, if the satellite navigation receiver cannot normally capture the military code signal, it may be determined that the civil code guided military code capturing function of the satellite navigation receiver is abnormal. The embodiment can solve the problem that the military code capture function test result is not credible due to the time service signal time in the civil code guided military code capture method.

As shown in fig. 11, another preferred embodiment of the present application provides a satellite navigation receiver military code signal acquisition function testing apparatus, including:

the civil code deception satellite navigation signal generation module is used for generating and broadcasting a corresponding civil code deception satellite navigation signal in an external field real environment according to the acquired satellite ephemeris and actual test requirements, wherein the civil code deception satellite navigation signal is provided with a corresponding signal position offset, a signal time offset and a power offset relative to the real civil code satellite navigation signal, and the power of the civil code deception satellite navigation signal is greater than that of the real civil code satellite navigation signal;

The embodiment provides a satellite navigation receiver military code signal capture function test device, which comprises a sky navigation signal synchronization module, an civil code deception satellite navigation signal generation module, a time service signal generation module, a receiver control module and a military code capture test module, wherein the device is provided with a civil code deception satellite navigation signal with corresponding position offset, time offset and power offset and a time service signal with the time offset which can be set on the basis of a real civil code satellite navigation signal, after the adverse effects of civil code signal time, a civil code signal PVT position result and the time service signal are removed, the satellite navigation receiver code capture function can be tested in an external field or an internal field application scene under the conditions of an external field real complex environment and a real military code signal, the embodiment creatively broadcasts the civil code signal and the time service signal with the corresponding offset, meanwhile, the power offset, the position offset, the time offset and the time service signal time offset of the civil code deception signal relative to the real civil code signal are controlled, the test problem of the military code signal capture function of the satellite navigation receiver under the conditions of the real complex environment of the external field and the real military code signal in the external field or internal field application scene is solved, the test result is credible, and the technical problems that the test coverage is not comprehensive and the test result is incredible in the conventional test method for the military code signal capture function of the satellite navigation receiver are solved.

As shown in fig. 12, another preferred embodiment of the present application provides a satellite navigation receiver military code signal acquisition function testing apparatus, including:

the opposite-sky navigation signal synchronization module receives a real civil satellite navigation signal in an external field real environment, resolves the real civil satellite navigation signal and outputs a current PVT navigation result, and completes signal synchronization operations of satellite ephemeris acquisition, signal time synchronization and reference clock synchronization;

the civil code deception satellite navigation signal generation module is used for generating and broadcasting an civil code deception satellite navigation signal in an external field real environment according to the collected satellite ephemeris, wherein the civil code deception satellite navigation signal has a set signal position offset and a set signal time offset relative to a real civil code satellite navigation signal, and the power of the civil code deception satellite navigation signal is greater than the power of the real civil code satellite navigation signal;

the time service signal generation module is used for generating and broadcasting a time service signal for time service in an external field real environment according to the synchronous signal time and the signal time offset set relative to the current real civil code satellite navigation signal;

the signal restoring module is used for synchronously restoring the recorded and stored satellite navigation signal and the time service signal;

the receiver control module is used for controlling the satellite navigation receiver to start a military code signal capturing function and receiving a restored satellite navigation signal and the time service signal, wherein the satellite navigation signal comprises a real civil code satellite navigation signal, a real military code signal, a civil code deception satellite navigation signal and an abnormal signal, and the abnormal signal comprises multipath, noise and an interference signal in an external field real environment;

Different from the foregoing embodiment, the satellite navigation receiver military code signal capture function testing device of this embodiment is further additionally provided with a signal recording module and a signal restoring module, wherein the signal recording module includes a satellite navigation signal recording submodule and a time service signal recording submodule, the satellite navigation signal recording submodule is used for recording satellite navigation signals, and the time service signal recording submodule is used for synchronously recording time service signals. The signal reduction module comprises a satellite navigation signal reduction submodule and a time service signal reduction submodule, the satellite navigation signal reduction submodule is used for reducing a satellite navigation signal which is recorded in advance, and the time service signal reduction submodule is used for synchronously reducing a time service signal which is recorded in advance.

As can be seen from fig. 4, the testing apparatus of this embodiment adds a signal recording module and a signal restoring module on the basis of the external field application scenario of fig. 1, and in this embodiment, firstly, under the conditions of an external field real complex environment and a real military code signal, the generated satellite navigation signal and the time service signal required for the test are synchronously recorded, and then the recorded satellite navigation signal and the time service signal are restored to the satellite navigation receiver in the internal field environment for the test of the military code signal capturing function. After a section of satellite navigation signal and a time service signal are recorded synchronously as a test signal, the test signal can be reused in an internal field application scene, and compared with the test in the external field application scene, the problem that the test signal in the external field application scene does not have reproducibility is solved; and secondly, because the embodiment can keep the consistency of the test signals, the same section of test signals can be used for testing the military code signal capture function of the satellite navigation receivers in different batches, the consistency of the test results can be evaluated, and the test efficiency, reliability and consistency are greatly improved.

The modules in the testing device can be wholly or partially implemented by software, hardware and a combination thereof. The modules can be embedded in a hardware form or independent from a processor in the computer device, and can also be stored in a memory in the computer device in a software form, so that the processor can call and execute operations corresponding to the modules.

As shown in fig. 13, the preferred embodiment of the present application further provides an electronic device, which includes a memory, a processor and a computer program stored in the memory and running on the processor, and when the processor executes the computer program, the processor implements the satellite navigation receiver military code signal acquisition function test method in the above embodiments.

As shown in fig. 14, the preferred embodiment of the present application also provides a computer device, which may be a terminal or a biopsy server, and the internal structure thereof may be as shown in fig. 14. The computer device includes a processor, a memory, and a network interface connected by a system bus. Wherein the processor of the computer device is configured to provide computing and control capabilities. The memory of the computer device comprises a nonvolatile storage medium and an internal memory. The non-volatile storage medium stores an operating system and a computer program. The internal memory provides an environment for the operation of an operating system and computer programs in the non-volatile storage medium. The network interface of the computer device is used for communicating with other external computer devices through network connection. The computer program is executed by a processor to realize the method for testing the acquisition function of the military code signal of the satellite navigation receiver.

Those skilled in the art will appreciate that the architecture shown in fig. 14 is merely a block diagram of some of the structures associated with the disclosed aspects and is not intended to limit the computing devices to which the disclosed aspects apply, as particular computing devices may include more or less components than those shown, or may combine certain components, or have a different arrangement of components.

The preferred embodiment of the present application further provides a storage medium, where the storage medium includes a stored program, and when the program runs, the apparatus where the storage medium is located is controlled to execute the method for testing the satellite navigation receiver military code signal acquisition function in the foregoing embodiments.

It should be noted that the steps illustrated in the flowcharts of the figures may be performed in a computer system such as a set of computer-executable instructions and that, although a logical order is illustrated in the flowcharts, in some cases, the steps illustrated or described may be performed in an order different than here.

If the functions of the method of the present embodiment are implemented in the form of software functional units and sold or used as independent products, the functions may be stored in one or more storage media readable by a computing device. Based on such understanding, part of the technical solutions or portions of the embodiments contributing to the prior art may be embodied in the form of a software product stored in a storage medium and including instructions for causing a computing device (which may be a personal computer, a server, a mobile computing device, a network device, or the like) to perform all or part of the steps of the methods described in the embodiments of the present application. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes.

The above description is only for the purpose of illustrating the preferred embodiments of the present application and is not to be construed as limiting the present application, and any modifications, equivalents, improvements, etc. made within the spirit and principle of the present application should be included in the scope of the present application.

Claims

1. A method for testing a military code signal acquisition function of a satellite navigation receiver is characterized by comprising the following steps:

generating and broadcasting a corresponding civil code deception satellite navigation signal in an external field real environment according to the acquired satellite ephemeris and actual test requirements, and generating and broadcasting a corresponding time service signal for time service in the external field real environment according to synchronous signal time and actual test requirements, wherein the civil code deception satellite navigation signal is provided with corresponding signal position offset, signal time offset and power offset relative to a real civil code satellite navigation signal, and the power of the civil code deception satellite navigation signal is greater than that of the real civil code satellite navigation signal; the time service signal is provided with a corresponding signal time offset relative to the current real civil code satellite navigation signal;

2. The method for testing acquisition function of military code signals of a satellite navigation receiver according to claim 1, wherein the step of completing the acquisition of satellite ephemeris comprises the steps of:

directly resolving a received satellite navigation signal ephemeris from a received real civil code satellite navigation signal to finish ephemeris acquisition;

or,

3. The method for testing acquisition function of military code signals of a satellite navigation receiver according to claim 1, wherein the signal synchronization operation of signal time synchronization and reference clock synchronization specifically comprises the steps of:

analyzing the real time of the signal of the real civil code satellite navigation signal and a signal reference clock;

4. The satellite navigation receiver military code signal capture function test method according to claim 1, wherein the civil code deception satellite navigation signal comprises a Beidou system-based civil code deception satellite navigation signal, a glonass system-based civil code deception satellite navigation signal, a global positioning system-based civil code deception satellite navigation signal, and a galileo system-based civil code deception satellite navigation signal, wherein when a signal position offset of the civil code deception satellite navigation signal is 0m and a signal time offset is 0s, a visible satellite, a space pattern distribution, a signal position, and a signal time of the civil code deception satellite navigation signal are consistent with a real civil code satellite navigation signal.

5. The method for testing the military code signal capturing function of the satellite navigation receiver according to claim 1, wherein when the satellite navigation receiver is placed in an infield application scene, after a civil code deception satellite navigation signal and a time service signal are generated and broadcast, the satellite navigation receiver is controlled to start the military code signal capturing function, and before the satellite navigation signal and the time service signal are received, the method further comprises the following steps:

in an external field application scene, synchronously recording accessed satellite navigation signals and time service signals, and storing the satellite navigation signals and the time service signals in a file form, wherein the satellite navigation signals comprise real civil code satellite navigation signals, real military code signals, civil code deception satellite navigation signals and abnormal signals, and the abnormal signals comprise multipath, noise and interference signals in an external field real environment;

6. The method for testing the military code signal acquisition function of the satellite navigation receiver according to claim 1, wherein the test of the military code signal acquisition function of the satellite navigation receiver under the conditions of an outfield real complex environment and a real military code signal is completed according to the acquisition of the military code signal of the satellite navigation receiver and the PVT navigation solution condition, and specifically comprises the following steps:

outputting a false position with enough offset from a real position after a satellite navigation receiver which finishes cold start captures and tracks an civil code deception satellite navigation signal;

7. The method for testing acquisition function of military code signals of a satellite navigation receiver according to claim 1, wherein corresponding civil code deception satellite navigation signals are generated and broadcast in a field real environment according to the acquired satellite ephemeris and actual test requirements, and corresponding time service signals for time service are generated and broadcast in the field real environment according to the synchronized signal time and the actual test requirements, specifically comprising the steps of:

if the military code direct capture function of the satellite navigation receiver needs to be tested, when the civil code deception satellite navigation signal is generated and broadcasted, the signal time offset of the civil code deception satellite navigation signal is set to be beyond the time uncertainty of the satellite navigation receiver, and meanwhile, the time offset of the time service signal is set to be 0 when the time service signal is generated and broadcasted.

8. The method for testing the military code signal acquisition function of the satellite navigation receiver according to claim 7, wherein the test of the military code signal acquisition function of the satellite navigation receiver is completed under the conditions of an outfield real complex environment and a real military code signal according to the acquisition of the military code signal of the satellite navigation receiver and the PVT navigation resolving condition, and specifically comprises the following steps:

9. The method for testing acquisition function of military code signals of a satellite navigation receiver according to claim 1, wherein corresponding civil code deception satellite navigation signals are generated and broadcast in a field real environment according to the acquired satellite ephemeris and actual test requirements, and corresponding time service signals for time service are generated and broadcast in the field real environment according to the synchronized signal time and the actual test requirements, specifically comprising the steps of:

if the civil code guided military code capturing function of the satellite navigation receiver needs to be tested, setting the signal time offset of the time service signal to be out of the time uncertainty of the satellite navigation receiver when the time service signal is generated and broadcast, and setting the time offset of the civil code deception satellite navigation signal to be 0 when the civil code deception satellite navigation signal is generated and broadcast.

10. The method for testing the acquisition function of the military code signal of the satellite navigation receiver according to claim 9, wherein the test of the acquisition function of the military code signal of the satellite navigation receiver under the conditions of the outfield real complex environment and the real military code signal is completed according to the acquisition of the military code signal of the satellite navigation receiver and the PVT navigation solution condition, and specifically comprises the following steps: