Reconnaissance method, system and equipment for multi-system mobile terminal

Abstract

The invention discloses a reconnaissance method, system and device for a multi-system mobile terminal, and belongs to the field of wireless communication, the method comprises the following steps: S1, obtaining time domain information and frequency domain information of a communication signal of the multi-system mobile terminal to be detected through a code detection processor, the time domain information comprising a time slot of the communication signal, and the frequency domain information comprising a frequency domain of the communication signal; the frequency domain information comprises a frequency point and a spectrum width of the communication signal; wherein the time slot is represented by high and low level signals; s2, transmitting the time slot, the frequency point and the spectrum width to a direction finding receiver through a code detection processor; s3, placing a direction-finding receiver at a frequency point of the communication signal, setting an appropriate bandwidth according to a frequency spectrum width, and controlling acquisition of the direction-finding receiver according to high and low level signals corresponding to the time slot; and S4, according to an acquisition signal of the direction finding receiver, calculating to obtain azimuth and pitching information of the to-be-tested multi-system mobile terminal. According to the invention, selective acquisition of the multi-system mobile terminal can be realized, and noise interference within acquisition time is reduced.

Description

Technical Field

[0001] The present invention relates to the field of wireless communications, and in particular to a reconnaissance method, system and device for a multi-standard mobile terminal. Background Art

[0002] In the field of radio reconnaissance and direction finding, the detection of unknown targets generally relies on the electromagnetic signal radiated by the target itself. The electromagnetic signal is generated by the target and radiates into free space. Although the electromagnetic signal has the characteristics of a wave, it generally propagates in a straight line. According to the amplitude characteristics or spatial characteristics of the electromagnetic signal, the electromagnetic signal can be received and processed by the receiving device, and the wave direction can be inversely calculated to a certain extent, thereby realizing the direction finding of the unknown target.

[0003] In the conventional direction finding field, during direction finding, the electromagnetic signal properties radiated by the target to be measured are generally relatively simple, that is, the signal frequency of the target to be measured is stable and known, and the electromagnetic signal radiated by the target to be measured is continuous in time, which is also more conducive to the extraction of the characteristics of the target to be measured. In addition, the amplitude of the electromagnetic signal radiated by the target to be measured must be higher than the background noise to a certain extent, so as to distinguish the signal and background noise of the target to be measured; it can be seen that the existing conventional direction finding methods are often used to measure the direction of the target to be measured with a relatively simple electromagnetic signal property, that is, the signal radiated to the outside is fixed, and the time of the radiated signal is continuous within a certain period of time. Conventional direction finding methods do not need to consider the interference of background noise on the target signal too much.

[0004] The frequency of the communication signal of the multi-standard mobile terminal depends on the allocation of the surrounding base stations. With the development of society, there are a large number of multi-standard mobile terminals. Even in places with very small traffic, there are still many types of signals in the communication frequency band. This makes it impossible to determine the frequency information of the communication signal of the target to be measured at the time of direction finding during detection; second, when the frequency of the communication signal of the target to be measured is known, the time slot of the communication signal cannot be captured. When the multi-standard mobile terminal is in a certain communication signal mode, the multi-standard mobile terminal will not always radiate signals at a certain frequency, and there may be a situation where it sends and receives signals from time to time, which will cause a large amount of noise signals in the collected signals and it is impossible to solve the effective direction information; third, it is impossible to distinguish whether the collected signal comes from the target to be measured. Summary of the invention

[0005] The purpose of the present invention is to overcome the problems existing in the direction finding process for targets with wide-band and time-domain discontinuous signals, and to provide a reconnaissance method, system and device for a multi-standard mobile terminal.

[0006] The objective of the present invention is achieved through the following technical solutions: In a first aspect, a reconnaissance method for a multi-standard mobile terminal is provided, comprising the following steps: S1. Obtaining the time domain information and frequency domain information of the communication signal of the multi-standard mobile terminal to be tested through the detection processor, wherein the time domain information includes the time slot of the communication signal, and the frequency domain information includes the frequency point and spectrum width of the communication signal; wherein the time slot is represented by a high and low level signal; S2, transmitting the time slot, frequency point and spectrum width to the direction finding receiver through the code detection processor; S3, placing the direction finding receiver at the frequency point of the communication signal, setting a suitable bandwidth according to the spectrum width, and controlling the collection of the direction finding receiver according to the high and low level signals corresponding to the time slot; S4. Calculate and obtain the azimuth and elevation information of the multi-standard mobile terminal to be measured according to the collected signal of the direction finding receiver.

[0007] In some preferred embodiments, the step of controlling the acquisition of the direction finding receiver according to the high and low level signals corresponding to the time slots includes: When the high and low level signals corresponding to the time slot remain at a high level, the direction finding receiver is controlled to perform continuous acquisition; When the high and low level signals corresponding to the time slot are alternating between high and low levels, the level-triggered mode is used to control the direction-finding receiver to perform intermittent acquisition.

[0008] In some preferred embodiments, the transmitting of the time slot, frequency point and spectrum width to the direction finding receiver by the code detection processor comprises: The code detection processor outputs the frequency point, spectrum width and high and low level signals corresponding to the time slot to the direction finding receiver through a standardized interface.

[0009] In some preferred embodiments, it also includes: The detection processor obtains the standard of the communication signal of the multi-standard mobile terminal to be tested, the international mobile user identification code, the mobile terminal identification code and the brand of the multi-standard mobile terminal.

[0010] In some preferred embodiments, it also includes: Different multi-standard mobile terminals are distinguished through the time domain information and frequency domain information of the communication signal.

[0011] In some preferred embodiments, the acquisition signal of the direction finding receiver includes: The phase and amplitude information of the same multi-standard mobile terminal to be tested received by different receiving antenna elements of the direction finding antenna array.

[0012] In a second aspect, a reconnaissance method for a multi-standard mobile terminal is provided, comprising: The code detection processor obtains the time domain information and frequency domain information of the communication signal of the multi-standard mobile terminal to be tested, wherein the time domain information includes the time slot of the communication signal, and the frequency domain information includes the frequency point and spectrum width of the communication signal; wherein the time slot is represented by a high and low level signal; The code detection processor transmits the time slot, frequency point and spectrum width to the direction finding receiver, and controls the direction finding receiver to collect the communication signal of the multi-standard mobile terminal to be detected according to the high and low level signals corresponding to the time slot.

[0013] In a third aspect, a reconnaissance method for a multi-standard mobile terminal is provided, comprising: The direction finding receiver receives the time domain information and frequency domain information of the communication signal of the multi-standard mobile terminal to be tested, wherein the time domain information includes the time slot of the communication signal, and the frequency domain information includes the frequency point and spectrum width of the communication signal; wherein the time slot is represented by a high and low level signal; The direction finding receiver controls the collection of the direction finding receiver according to the high and low level signals corresponding to the time slots, and calculates the azimuth and elevation information of the multi-standard mobile terminal to be measured according to the collected signals.

[0014] In a fourth aspect, a reconnaissance system for a multi-standard mobile terminal is provided, comprising: A code detection processor, used to obtain time domain information and frequency domain information of the communication signal of the multi-standard mobile terminal to be tested, wherein the time domain information includes the time slot of the communication signal, and the frequency domain information includes the frequency point and spectrum width of the communication signal; wherein the time slot is represented by a high and low level signal; the code detection processor is also used to transmit the time slot, frequency point and spectrum width to a direction finding receiver; A direction finding receiver, used to set the corresponding frequency and bandwidth according to the communication signal, and collect the high and low level signals corresponding to the time slot of the multi-standard mobile terminal to be tested; The data processing unit is used to calculate the azimuth and elevation information of the multi-standard mobile terminal to be measured according to the collected signal of the direction finding receiver.

[0015] In some preferred embodiments, the direction finding receiver and the code detection processor use different antenna arrays to meet their respective needs for transmitting and receiving signals.

[0016] In some preferred embodiments, the direction finding receiver performs height measurement through an elevation direction finding antenna array and performs direction measurement through an azimuth direction finding antenna array.

[0017] In a fifth aspect, a code detection processor is provided, comprising: A communication signal acquisition unit, used to acquire time domain information and frequency domain information of the communication signal of the multi-standard mobile terminal to be tested, wherein the time domain information includes the time slot of the communication signal, and the frequency domain information includes the frequency point and spectrum width of the communication signal; wherein the time slot is represented by a high and low level signal; The control signal transmission unit is used to transmit the time slot, frequency point and spectrum width to the direction finding receiver, and control the direction finding receiver to collect the communication signal of the multi-standard mobile terminal to be tested according to the high and low level signals corresponding to the time slot.

[0018] In a sixth aspect, a direction finding receiver is provided, comprising: An acquisition processing unit, used to receive time domain information and frequency domain information of a communication signal of a multi-standard mobile terminal to be tested, wherein the time domain information includes a time slot of the communication signal, and the frequency domain information includes a frequency point and a spectrum width of the communication signal; wherein the time slot is represented by a high and low level signal; The acquisition processing unit is also used to control the acquisition of the direction finding receiver according to the high and low level signals corresponding to the time slot, and calculate the azimuth and elevation information of the multi-standard mobile terminal to be tested according to the acquired signals.

[0019] In some preferred embodiments, the direction finding receiver further includes a radio frequency front end and a frequency conversion channel.

[0020] It should be further explained that the technical features corresponding to the above options can be combined or replaced with each other to form a new technical solution if there is no conflict.

[0021] Compared with the prior art, the present invention has the following beneficial effects: (1) The present invention obtains the time domain information and frequency domain information of the communication signal of the multi-standard mobile terminal to be tested through the detection code processor, and controls the acquisition mode of the direction finding receiver according to the time domain information and the frequency domain information, so that the direction finding receiver only collects data during the period when the communication signal of the multi-standard mobile terminal to be tested exists. Even if the multi-standard mobile terminal to be tested has a wide band and time domain discontinuity such as transmitting and receiving at the same time, it can ensure that the collected signal is the target signal, avoiding a large amount of noise signal interference during the collection period; in addition, the detection code processor can distinguish each multi-standard mobile terminal and other targets from the frequency domain and the time domain, so that when finding the direction, it can distinguish whether the collected signal comes from the corresponding multi-standard mobile terminal to be tested, and adapt to complex reconnaissance environments.

[0022] (2) In one example, the detection code processor of the present invention can not only be used to provide the frequency, bandwidth and time domain characteristics of the target to be detected, but also obtain the standard, international mobile user identification code, mobile terminal identification code and brand of the multi-standard mobile terminal communication signal to be detected, which can assist in confirming the target to be detected and further ensure the accuracy of reconnaissance and direction finding.

[0023] (3) In one example, the present invention can perform different modes of acquisition, wherein when the high and low level signals corresponding to the time slot remain at a high level, the direction finding receiver is controlled to perform continuous acquisition; when the high and low level signals corresponding to the time slot are alternating between high and low levels, the direction finding receiver is controlled to perform intermittent acquisition in a level-triggered mode. Different acquisition modes can be switched for different targets.

[0024] (4) In one example, the direction finding receiver of the present invention includes a radio frequency front end, a frequency conversion channel and an acquisition processing unit. Different radio frequency front ends, frequency conversion channels and acquisition processing units are configured according to different targets, direction finding accuracy and direction finding system requirements to adapt to the acquisition of various signals. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 A flow chart of a reconnaissance method for a multi-standard mobile terminal shown in an embodiment of the present invention; Figure 2 The specific direction finding process of the multi-standard mobile terminal shown in the embodiment of the present invention is schematically illustrated; Figure 3 A schematic diagram of a multi-standard mobile terminal reconnaissance system according to an embodiment of the present invention; Figure 4 A schematic diagram of a code detection processor according to an embodiment of the present invention. DETAILED DESCRIPTION

[0026] The technical solution of the present invention is clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all of the embodiments. The components of the embodiments of the present application described and shown in the accompanying drawings can be arranged and designed in various configurations. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0027] It should be noted that the defects existing in the solutions in the above-mentioned prior art are the results obtained by the inventor after practice and careful research. Therefore, the discovery process of the above-mentioned problems and the solutions proposed in the embodiments of the present application for the above-mentioned problems below should all be the contributions made by the inventor to the present application in the process of invention and creation, and should not be understood as technical contents known to technical personnel in this field.

[0028] Based on the above related statements, since this embodiment involves wireless communication related technologies, in order to make the purpose, technical solutions and advantages of the embodiments of the present application clearer, the relevant professional terms that may be involved in the present invention are explained below: 1. IMSI: The full name is International Mobile Subscriber Identification Number, which is a number assigned internationally to uniquely identify a mobile user. It is stored in the SIM card, HLR / VLR, and is a unique (up to 15 digits) code used to identify individual users on the GSM network. This code is valid in all locations in the network, including roaming areas. It is assigned to mobile phones by operators.

[0029] 2. EMSI: Mobile terminal identification code. Every mobile phone has a unique serial number.

[0030] In view of the technical problems pointed out in the background technology, the embodiments provided by the present invention are as follows: Example 1

[0031] Reference Figure 1 In an exemplary embodiment, a method for detecting a multi-standard mobile terminal is provided, comprising the following steps: S1. Obtaining the time domain information and frequency domain information of the communication signal of the multi-standard mobile terminal to be tested through the detection processor, wherein the time domain information includes the time slot of the communication signal, and the frequency domain information includes the frequency point and spectrum width of the communication signal; wherein the time slot is represented by a high and low level signal; S2, transmitting the time slot, frequency point and spectrum width to the direction finding receiver through the code detection processor; S3, placing the direction finding receiver at the frequency point of the communication signal, setting a suitable bandwidth according to the spectrum width, and controlling the collection of the direction finding receiver according to the high and low level signals corresponding to the time slot; S4. Calculate and obtain the azimuth and elevation information of the multi-standard mobile terminal to be measured according to the collected signal of the direction finding receiver.

[0032] Specifically, Figure 2 As shown, the direction finding receiver provides a level-triggered acquisition mode based on the process of the traditional single-frequency continuous wave direction finding receiver, that is, on the basis of the conventional continuous wave direction finding receiver, a level-triggered acquisition mode is added. The level-triggered acquisition mode controls the acquisition processing card in the direction finding receiver by the high and low levels input from the outside to match the time domain discontinuity of the multi-standard mobile terminal to be tested in different communication signal modes (such as GSM, TDD, etc. of mobile communication signals), and minimizes the noise signal within the acquisition time.

[0033] In this method, the level-triggered acquisition mode is triggered by a high-level signal. When the code detection processor gives a high-level signal to the direction-finding receiver, the direction-finding receiver starts to collect. When the code detection processor gives a low-level signal or the high-level signal ends, the direction-finding receiver stops collecting. Because the duration of the communication signal is in the millisecond level, which is usually longer than the pulse trigger time, the level trigger is selected. That is, when there is a communication signal, the device always maintains a high level (for example, 5V), so that the direction-finding receiver collects the signal.

[0034] It should be noted that in some other special scenarios, when the communication signals of some multi-standard mobile terminals to be tested exist for a short time (less than the pulse trigger duration), the pulse triggered acquisition mode can also be selected to perform direction finding on the multi-standard mobile terminals to be tested in the extremely short time when the communication signals exist.

[0035] Therefore, the present invention can perform different modes of acquisition. For example, when the high and low level signals corresponding to the time slot remain at a high level, the direction finding receiver is controlled to perform continuous acquisition; when the high and low level signals corresponding to the time slot are alternating between high and low levels, the direction finding receiver is controlled to perform intermittent acquisition in a level-triggered mode. Different acquisition modes can be switched for different targets. That is, the direction finding receiver can select high and low levels to control acquisition, or can directly perform continuous acquisition.

[0036] Furthermore, the communication signal of the multi-standard mobile terminal is detected by the detection processor to obtain the characteristics of the communication signal of the multi-standard mobile terminal, including the time domain information and frequency domain information corresponding to the communication signal. The time domain information mainly refers to the time when the communication signal of the multi-standard mobile terminal exists, that is, the time slot. The frequency domain information mainly refers to the frequency point and spectrum width of the communication signal of the multi-standard mobile terminal. The frequency domain information of the multi-standard mobile terminal to be tested captured by the detection processor is transmitted to the direction finding receiver through the information interface to control the direction finding receiver to be placed at the corresponding frequency point and bandwidth; the time domain information is transmitted to the direction finding receiver through the information interface in the form of high and low levels to control the start and stop of the acquisition of the direction finding receiver to adapt to the discontinuous signal acquisition in the time domain.

[0037] Furthermore, combined with the traditional radio direction-finding system process, according to the accuracy requirements, a matching direction-finding antenna array and a corresponding direction-finding receiver are selected. The direction-finding antenna array receives the surrounding radio signals. Under the control of the detection processor, the direction-finding receiver distinguishes the signals received by the direction-finding antenna array in the frequency domain and the time domain, selectively collects and processes them, and finally obtains the phase, amplitude and other information of the same target received by different receiving antenna elements of the direction-finding antenna array. After calculation, the azimuth and elevation information of the object to be measured can be obtained.

[0038] Furthermore, the detection code processor outputs the frequency point, spectrum width, and high and low level signals corresponding to the time slot to the direction finding receiver through a standardized interface. The detection code processor can not only be used to provide the frequency point, bandwidth, and time domain characteristics of the target under test, but also provide the standard, IMSI, EMSI, and multi-standard mobile terminal brand of the communication signal of the target under test. It can be used to assist in confirming the target to be tested and further ensure the accuracy of reconnaissance and direction finding.

[0039] Furthermore, the method is not only applicable to the height and direction measurement of multi-standard mobile terminals, but can also be used for the direction measurement of other targets to be measured with similar communication signal standards as the multi-standard mobile terminals. Example 2

[0040] Based on the inventive concept of embodiment 1, a detection method of a multi-standard mobile terminal is provided, including: The code detection processor obtains the time domain information and frequency domain information of the communication signal of the multi-standard mobile terminal to be tested, wherein the time domain information includes the time slot of the communication signal, and the frequency domain information includes the frequency point and spectrum width of the communication signal; wherein the time slot is represented by a high and low level signal; The code detection processor transmits the time slot, frequency point and spectrum width to the direction finding receiver, and controls the direction finding receiver to collect the communication signal of the multi-standard mobile terminal to be detected according to the high and low level signals corresponding to the time slot. Example 3

[0041] Based on the inventive concept of embodiment 1, a detection method of a multi-standard mobile terminal is provided, including: The direction finding receiver receives the time domain information and frequency domain information of the communication signal of the multi-standard mobile terminal to be tested, wherein the time domain information includes the time slot of the communication signal, and the frequency domain information includes the frequency point and spectrum width of the communication signal; wherein the time slot is represented by a high and low level signal; The direction finding receiver controls the collection of the direction finding receiver according to the high and low level signals corresponding to the time slots, and calculates the azimuth and elevation information of the multi-standard mobile terminal to be measured according to the collected signals. Example 4

[0042] Based on the same inventive concept as that of Embodiment 1, a multi-standard mobile terminal reconnaissance system is provided, which can realize height and direction measurement of multi-standard mobile terminals, such as Figure 3 As shown, the system includes: A code detection processor, used to obtain time domain information and frequency domain information of the communication signal of the multi-standard mobile terminal to be tested, wherein the time domain information includes the time slot of the communication signal, and the frequency domain information includes the frequency point and spectrum width of the communication signal; wherein the time slot is represented by a high and low level signal; the code detection processor is also used to transmit the time slot, frequency point and spectrum width to a direction finding receiver; A direction finding receiver, used to set the corresponding frequency and bandwidth according to the communication signal, and collect the high and low level signals corresponding to the time slot of the multi-standard mobile terminal to be tested; The data processing unit is used to calculate the azimuth and elevation information of the multi-standard mobile terminal to be measured according to the collected signal of the direction finding receiver.

[0043] Specifically, the direction-finding receiver and the code detection processor use different antenna arrays to meet their different needs for sending and receiving signals. The height and direction finding of multi-standard mobile terminals are mainly achieved by using height-finding arrays and direction-finding arrays. The height-finding array uses an elevation direction-finding antenna array to receive signals of multi-standard mobile terminal signal bands. The direction-finding array uses an azimuth direction-finding antenna array to receive signals of mobile terminal signal bands, and uses a radio frequency switching unit in front of the direction-finding receiver to switch between elevation signals and azimuth signals.

[0044] This efficient code detection and high-precision height and direction finding system for multi-standard mobile terminals involves a signal processing process, which distinguishes signals in the frequency domain and time domain, and controls the direction finding receiver to collect signals that match their characteristics. It can not only adapt to different types of multi-standard mobile terminal communication signal standards, but also greatly distinguish multiple targets in the frequency domain and time domain, so that the system has the ability to adapt to multiple targets to be measured within the range of the equipment. Example 5

[0045] Based on the same inventive concept as that of Embodiment 1, a code detection processor is provided, such as Figure 4 As shown, including: A communication signal acquisition unit, used to acquire time domain information and frequency domain information of the communication signal of the multi-standard mobile terminal to be tested, wherein the time domain information includes the time slot of the communication signal, and the frequency domain information includes the frequency point and spectrum width of the communication signal; wherein the time slot is represented by a high and low level signal; The control signal transmission unit is used to transmit the time slot, frequency point and spectrum width to the direction finding receiver, and control the direction finding receiver to collect the communication signal of the multi-standard mobile terminal to be tested according to the high and low level signals corresponding to the time slot.

[0046] The code detection processor can work independently as a reconnaissance device to detect the signals of surrounding multi-standard mobile terminals. It outputs the frequency and bandwidth through a standardized interface, and outputs the high and low levels corresponding to the time domain characteristics through a hardware circuit. The code detection processor mainly realizes the capture and decoding of the frequency and time slots of multi-standard mobile terminal signals. By capturing the frequency and time domain of the devices around the device through the code detection processor, it can distinguish the surrounding targets from the frequency and time domain to adapt to the multi-target environment. Example 6

[0047] Based on the same inventive concept as that of Embodiment 1, a direction finding receiver is provided, comprising: An acquisition processing unit, used to receive time domain information and frequency domain information of a communication signal of a multi-standard mobile terminal to be tested, wherein the time domain information includes a time slot of the communication signal, and the frequency domain information includes a frequency point and a spectrum width of the communication signal; wherein the time slot is represented by a high and low level signal; The acquisition processing unit is also used to control the acquisition of the direction finding receiver according to the high and low level signals corresponding to the time slot, and calculate the azimuth and elevation information of the multi-standard mobile terminal to be tested according to the acquired signals.

[0048] The direction-finding receiver can work independently and can be used as an independent device for monitoring the surrounding electromagnetic environment. The acquisition and processing method of the direction-finding receiver is controlled by the signal of the code detection processor. If the code detection processor receives a communication signal that is discontinuous in the time domain, the code detection processor will inform the receiver of the frequency and time domain characteristics of the device, set the frequency and place the receiver at the frequency of the communication signal, and set the appropriate bandwidth to collect according to the time domain characteristics of the signal. This can distinguish the situation of multiple targets in the surrounding area.

[0049] Furthermore, the direction finding receiver also includes a radio frequency front end and a frequency conversion channel. In practical applications, different radio frequency front ends, frequency conversion channels and acquisition processing units are configured according to different targets, direction finding accuracy and direction finding system requirements to adapt to the acquisition of multiple signals.

[0050] The above specific implementation methods are detailed descriptions of the present invention. It cannot be determined that the specific implementation methods of the present invention are limited to these descriptions. For ordinary technicians in the technical field to which the present invention belongs, several simple deductions and substitutions can be made without departing from the concept of the present invention, which should be regarded as belonging to the protection scope of the present invention.

Claims

1. A multi-standard mobile terminal reconnaissance method, characterized in that: The following steps are involved: S1. Obtaining the time domain information and frequency domain information of the communication signal of the multi-standard mobile terminal to be tested through the detection processor, wherein the time domain information includes the time slot of the communication signal, and the frequency domain information includes the frequency point and spectrum width of the communication signal; wherein the time slot is represented by a high and low level signal; S2, transmitting the time slot, frequency point and spectrum width to the direction finding receiver through the code detection processor; S3, placing the direction finding receiver at the frequency point of the communication signal, setting a suitable bandwidth according to the spectrum width, and controlling the collection of the direction finding receiver according to the high and low level signals corresponding to the time slot; S4. Calculate and obtain the azimuth and elevation information of the multi-standard mobile terminal to be measured according to the collected signal of the direction finding receiver.

2. The multi-standard mobile terminal reconnaissance method according to claim 1, characterized in that: The step of controlling the acquisition of the direction finding receiver according to the high and low level signals corresponding to the time slots comprises: When the high and low level signals corresponding to the time slot remain at a high level, the direction finding receiver is controlled to perform continuous acquisition; When the high and low level signals corresponding to the time slot are alternating between high and low levels, the level-triggered mode is used to control the direction-finding receiver to perform intermittent acquisition.

3. The multi-standard mobile terminal reconnaissance method according to claim 1, characterized in that: The method of transmitting the time slot, frequency point and spectrum width to a direction finding receiver through a code detection processor comprises: The code detection processor outputs the frequency point, spectrum width and high and low level signals corresponding to the time slot to the direction finding receiver through a standardized interface.

4. The multi-standard mobile terminal reconnaissance method according to claim 1, characterized in that: Also includes: The detection processor obtains the standard of the communication signal of the multi-standard mobile terminal to be tested, the international mobile user identification code, the mobile terminal identification code and the brand of the multi-standard mobile terminal.

5. A multi-standard mobile terminal reconnaissance method, characterized in that: include: The code detection processor obtains the time domain information and frequency domain information of the communication signal of the multi-standard mobile terminal to be tested, wherein the time domain information includes the time slot of the communication signal, and the frequency domain information includes the frequency point and spectrum width of the communication signal; wherein the time slot is represented by a high and low level signal; The code detection processor transmits the time slot, frequency point and spectrum width to the direction finding receiver, and controls the direction finding receiver to collect the communication signal of the multi-standard mobile terminal to be detected according to the high and low level signals corresponding to the time slot.

6. A multi-standard mobile terminal reconnaissance method, characterized in that: include: The direction finding receiver receives the time domain information and frequency domain information of the communication signal of the multi-standard mobile terminal to be tested, wherein the time domain information includes the time slot of the communication signal, and the frequency domain information includes the frequency point and spectrum width of the communication signal; wherein the time slot is represented by a high and low level signal; The direction finding receiver controls the collection of the direction finding receiver according to the high and low level signals corresponding to the time slots, and calculates the azimuth and elevation information of the multi-standard mobile terminal to be measured according to the collected signals.

7. A multi-standard mobile terminal reconnaissance system, characterized in that: include: A code detection processor, used to obtain time domain information and frequency domain information of the communication signal of the multi-standard mobile terminal to be tested, wherein the time domain information includes the time slot of the communication signal, and the frequency domain information includes the frequency point and spectrum width of the communication signal; wherein the time slot is represented by a high and low level signal; the code detection processor is also used to transmit the time slot, frequency point and spectrum width to a direction finding receiver; A direction finding receiver, used to set the corresponding frequency and bandwidth according to the communication signal, and collect the high and low level signals corresponding to the time slot of the multi-standard mobile terminal to be tested; The data processing unit is used to calculate the azimuth and elevation information of the multi-standard mobile terminal to be measured according to the collected signal of the direction finding receiver.

8. A code detection processor, characterized in that: include: A communication signal acquisition unit, used to acquire time domain information and frequency domain information of the communication signal of the multi-standard mobile terminal to be tested, wherein the time domain information includes the time slot of the communication signal, and the frequency domain information includes the frequency point and spectrum width of the communication signal; wherein the time slot is represented by a high and low level signal; The control signal transmission unit is used to transmit the time slot, frequency point and spectrum width to the direction finding receiver, and control the direction finding receiver to collect the communication signal of the multi-standard mobile terminal to be tested according to the high and low level signals corresponding to the time slot.

9. A direction finding receiver, characterized in that: include: An acquisition processing unit, used to receive time domain information and frequency domain information of a communication signal of a multi-standard mobile terminal to be tested, wherein the time domain information includes a time slot of the communication signal, and the frequency domain information includes a frequency point and a spectrum width of the communication signal; wherein the time slot is represented by a high and low level signal; The acquisition processing unit is also used to control the acquisition of the direction finding receiver according to the high and low level signals corresponding to the time slot, and calculate the azimuth and elevation information of the multi-standard mobile terminal to be tested according to the acquired signals.

10. The direction finding receiver according to claim 9, characterized in that: The direction finding receiver also includes a radio frequency front end and a frequency conversion channel.

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