DASH interferometer reference judgment device and adjustment method

Abstract

The invention relates to the technical field of interferometers on reference satellites, and particularly discloses a DASH interferometer reference judgment device and an adjustment method, and the adjustment method comprises the steps: S1, building a DASH interferometer horizontal reference; s2, establishing the same standard of the krypton lamp and the theodolite S3, establishing a krypton lamp and a DASH interferometer as a system reference and a four-dimensional adjusting lifting platform as a system reference position; s4, establishing a system reference state of the krypton lamp and the theodolite; and S5, establishing that the cubic reference prism and the theodolite are in a system reference state, so that the cubic reference prism, the DASH interferometer and the krypton lamp are all used as system references. The method is used for a scene in which the system reference time cannot be determined when the DASH interferometer is integrated on a satellite platform. According to the method, the reference of the DASH interferometer system is determined by using the cubic prism, detection is easy, and convenience is provided for assembly between the satellite platform and the DASH interferometer.

Description

Technical Field

[0001] The invention relates to the technical field of interferometers on reference satellites, and in particular to a DASH interferometer reference determination device and an adjustment method. Background Art

[0002] Satellite remote sensing has the advantages of high accuracy and no geographical restrictions in realizing global large-scale climate detection. The wind field detection interferometer based on the limb observation mode obtains the airglow emission spectrum of atmospheric components, and inverts the Doppler shift, broadening and intensity changes of the atmospheric fine spectrum according to the changes in the phase, contrast and amplitude of the interference pattern with the atmospheric wind field, thereby quantitatively detecting parameters such as the atmospheric wind field.

[0003] Compared with the traditional spatial heterodyne spectrometer, the Doppler asymmetric spatial heterodyne, referred to as DASH interferometer, adds a field-of-view widening prism, increases the observation angle, and has a wider detection area. It also introduces an optical path difference and provides a very high spectral resolution, which improves the accuracy of wind speed inversion.

[0004] Since the DASH interferometer is mounted on a satellite platform, it can only observe with the satellite's orbital motion. When detecting the wind field in the middle and upper atmosphere, it needs to accurately point to the target area, and the observation field between the two needs to be highly consistent. However, the satellite platform and the DASH interferometer are not assembled as a whole, and the optical axis between the two cannot be connected. If there is a slight tilt deviation in the adjustment of the satellite platform and the DASH interferometer, it will eventually affect the quality of the interference fringe imaging.

[0005] Based on this, those skilled in the art urgently need to provide a new method for solving the problem that the reference of the DASH interferometer cannot be determined when it is integrated into a satellite platform. Summary of the invention

[0006] Therefore, the technical problem to be solved by the present invention is to overcome the defects existing in the above-mentioned prior art, thereby providing a DASH interferometer reference determination device and an adjustment method.

[0007] A DASH interferometer reference determination device comprises: a DASH interferometer, a four-dimensional adjustment lifting platform, a computer, a theodolite and a lifting platform, wherein the DASH interferometer is arranged on the four-dimensional adjustment lifting platform; the computer is connected to the DASH interferometer by signal; and further comprises: an adjustment platform, a krypton lamp, a plane mirror and a cubic reference prism; The plane mirror is detachably connected to the window plane at the light entrance of the DASH interferometer; The krypton lamp is detachably connected to the adjustment table; The theodolite is detachably connected to the lifting platform; The cubic reference prism is movably connected to the DASH interferometer, and the normal line of the reflecting surface of the cubic reference prism is parallel to the optical axis of the light inlet of the DASH interferometer.

[0008] Preferably, the equipment used to establish the horizontal reference of the DASH interferometer includes: a DASH interferometer, a four-dimensional adjustment lifting platform, a plane mirror, a theodolite and a lifting platform; The plane mirror and the light entrance window of the DASH interferometer have the same reference; The theodolite and the plane mirror are at the same level; The theodolite is in a horizontal position; In the field of view of the theodolite telescope, the center of the crosshairs coincides with the center of the plane mirror.

[0009] Preferably, the equipment used to establish the krypton lamp and the theodolite as the same reference includes: a theodolite, a lifting platform, a krypton lamp and an adjustment platform; The krypton lamp installed on the adjustment table is at the same height as the theodolite installed on the lifting platform; The incident light from the krypton lamp coincides with the center of the crosshairs in the theodolite.

[0010] Preferably, when the krypton lamp and the DASH interferometer are established as the system reference, and the four-dimensional adjustment lifting platform is used as the system reference position, the device includes: a DASH interferometer, a four-dimensional adjustment lifting platform, a theodolite, a lifting platform, a krypton lamp, an adjustment platform and a computer; The position of the DASH interferometer installed on the four-dimensional adjustable lifting platform when it is at the horizontal reference; The theodolite, lifting platform, krypton lamp and adjustment platform are located at the positions when the krypton lamp and theodolite are on the same reference; The light emitted by the krypton lamp is imaged in the computer through the DASH interferometer, and the interference fringes are in the center of the field of view.

[0011] Preferably, the device used to establish the krypton lamp and theodolite in a system reference state comprises: a theodolite, a lifting platform, and a krypton lamp in a system reference state; The theodolite mounted on the lifting platform is at the same height as the krypton lamp at the system reference; The incident light from the krypton lamp coincides with the center of the crosshairs in the theodolite.

[0012] Preferably, the equipment used to establish the cubic reference prism and theodolite in the system reference state includes: a DASH interferometer in the system reference, a theodolite in the system reference, a lifting platform, and a cubic reference prism mounted on the DASH interferometer; The light emitted by the theodolite is reflected by the cubic reference prism, and the center of the crosshairs and the reflected light of the cubic reference prism are seen to coincide in the telescope field of the theodolite. At this time, the cubic reference prism, DASH interferometer and krypton lamp are all system references.

[0013] Preferably, it also includes a device used to verify whether the cubic reference prism, the DASH interferometer and the krypton lamp are all system references, specifically including: a DASH interferometer at the system reference, a theodolite at the system reference, a lifting platform, a cubic reference prism at the system reference, a krypton lamp at the system reference and an adjustment platform; The theodolite at the system reference is aligned with the cubic reference prism at the system reference and the krypton lamp at the system reference respectively, and the horizontal angle and vertical angle values ​​measured and displayed by the theodolite at the system reference are compared to ensure that the cubic reference prism and the krypton lamp light source are at the same system reference state. The DASH interferometer system reference is obtained by detecting the position state of the cubic reference prism.

[0014] A method for assembling and adjusting a DASH interferometer reference determination device is implemented by using the DASH interferometer reference determination device, comprising the following steps: S1. Establish the DASH interferometer horizontal reference; S2. Establish the same benchmark between krypton lamp and theodolite; S3. Establish the krypton lamp and DASH interferometer as the system reference, and the four-dimensional adjustment lifting platform as the system reference position; S4. Establish that the krypton lamp and theodolite are in the system reference state; S5. Establish the cubic reference prism and theodolite in the system reference state, so that the cubic reference prism, DASH interferometer and krypton lamp are all system references; S6. Verify whether the cubic reference prism, DASH interferometer and krypton lamp are all system references. If the result is yes, complete the adjustment; if the result is no, repeat steps S1-S5 until the verification result is yes.

[0015] Preferably, when executing step S2, it is necessary to rotate the translation knob of the four-dimensional adjustment lifting platform to make the DASH interferometer evacuate the observation field of the theodolite; When executing step S3, the four-dimensional adjustment lifting platform moved in step S2 needs to be restored to the initial position, and the DASH interferometer returns to the center of the field of view.

[0016] Preferably, step S4 uses the system reference established by the krypton lamp in step S3, and when executing step S4, the translation knob of the four-dimensional adjustment lifting platform needs to be rotated to make the DASH interferometer evacuate the front of the krypton lamp light source; When executing step S5: the translation knob of the four-dimensional adjustment lifting platform is roughly adjusted to make the DASH interferometer appear again in the telescope field of view of the theodolite.

[0017] The technical solution of the present invention has the following advantages: The present invention first benchmarks the krypton lamp and theodolite, then establishes the system benchmark of the krypton lamp, DASH interferometer and theodolite, and finally cleverly uses the reflected light of the cubic benchmark prism as the adjustment reference light and theodolite for benchmarking, so as to realize that the cubic benchmark prism, DASH interferometer and krypton lamp are all system benchmarks; the present invention is used in the scenario where the system benchmark of the DASH interferometer cannot be determined when it is integrated into a satellite platform. The present invention uses a cubic prism to determine the system benchmark of the DASH interferometer, which is easy to detect and provides convenience for the assembly between the satellite platform and the DASH interferometer. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0019] Figure 1 It is a schematic diagram of an embodiment of an installation and adjustment method of a DASH interferometer reference determination device of the present invention; Figure 2 This is a schematic diagram of the coincidence of the center of the theodolite crosshairs and the bull's eye; Figure 3 This is a schematic diagram of the coincidence of the center of the theodolite crosshairs and the krypton lamp light source; Figure 4 Schematic diagram of the interference fringes position.

[0020] Description of reference numerals: 1-adjustment table; 2-krypton lamp; 3-plane mirror; 4-DASH interferometer; 5-four-dimensional adjustment lifting platform; 6-cubic reference prism; 7-theodolite; 8-lifting platform; 9-computer. DETAILED DESCRIPTION

[0021] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0022] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0023] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0024] In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0025] Example 1 like Figure 1 As shown, a DASH interferometer reference determination device includes: a DASH interferometer 4, a four-dimensional adjustment lifting platform 5, a computer 9, a theodolite 7, a lifting platform 8, an adjustment platform 1, a krypton lamp 2, a plane mirror 3 and a cubic reference prism 6, the DASH interferometer 4 is arranged on the four-dimensional adjustment lifting platform 5; the computer 9 is connected to the DASH interferometer 4 by signal; The plane mirror 3 is detachably connected to the window plane of the light entrance of the DASH interferometer 4; The krypton lamp 2 is detachably connected to the adjustment platform 1; The theodolite 7 is detachably connected to the lifting platform 8; The cubic reference prism 6 is movably connected to the DASH interferometer 4 , and the normal line of the reflecting surface of the cubic reference prism 6 is parallel to the optical axis of the light inlet of the DASH interferometer 4 .

[0026] It should be noted that, in actual application: the cubic reference prism 6 is fixed on the mirror base by glue, and an adjustment pad is placed under the mirror base; the adjustment pad is fixed on the DASH interferometer 4 as a whole, and the angle offset of the cubic reference prism is finely adjusted by the tooling margin left by the adjustment pad, thereby realizing the adjustment of the optical path where the cubic reference prism 6 is located.

[0027] As an implementation method: the equipment used to establish the horizontal reference of the DASH interferometer 4 includes: the DASH interferometer 4, the four-dimensional adjustment lifting platform 5, the plane mirror 3, theodolite 7 and the lifting platform 8; The plane mirror 3 and the light entrance window of the DASH interferometer 4 have the same reference; The theodolite 7 and the plane mirror 3 are at the same level; The theodolite 7 is in a horizontal state; In the field of view of the telescope of the theodolite 7, the center of the crosshairs coincides with the center point of the plane mirror 3.

[0028] As an implementation mode: when establishing the krypton lamp 2 and theodolite 7 as the same reference, the equipment used includes: theodolite 7, lifting platform 8, krypton lamp 2 and adjustment platform 1; The krypton lamp 2 mounted on the adjustment platform 1 and the theodolite 7 mounted on the lifting platform 8 are at the same height; The incident light emitted by the krypton lamp 2 coincides with the center of the crosshairs in the theodolite 7 .

[0029] As an implementation method: when the krypton lamp 2 and the DASH interferometer 4 are established as the system reference, and the four-dimensional adjustment lifting platform 5 is the system reference position, the device used includes: the DASH interferometer 4, the four-dimensional adjustment lifting platform 5, theodolite 7, the lifting platform 8, the krypton lamp 2, the adjustment platform 1 and the computer 9; The DASH interferometer 4 mounted on the four-dimensional adjustable lifting platform 5 is located at the position when the horizontal reference is used; The theodolite 7, the lifting platform 8, the krypton lamp 2 and the adjustment platform 1 are located at the positions when the krypton lamp 2 and the theodolite 4 are on the same reference; The light emitted by the krypton lamp 2 is imaged in the computer 9 through the DASH interferometer 4, and the interference fringes are at the center of the field of view.

[0030] As an implementation mode: the device used to establish that the krypton lamp 2 and theodolite 7 are in a system reference state comprises: theodolite 7, a lifting platform 8, and the krypton lamp 2 in the system reference state; The theodolite 7 mounted on the lifting platform 8 is at the same height as the krypton lamp 2 at the system reference; The incident light emitted by the krypton lamp 2 coincides with the center of the crosshairs in the theodolite 7 .

[0031] As an implementation mode: the equipment used when establishing the cubic reference prism 6 and theodolite 7 in the system reference state includes: the DASH interferometer 4 in the system reference, the theodolite 7 in the system reference, the lifting platform 8 and the cubic reference prism 6 installed on the DASH interferometer 4; The light emitted by the theodolite 7 is reflected by the cubic reference prism 6, and the center of the crosshairs and the reflected light of the cubic reference prism 6 are seen to coincide in the telescope field of the theodolite 7. At this time, the cubic reference prism 6, the DASH interferometer 4 and the krypton lamp 2 are all system references.

[0032] As an implementation mode: it also includes a device used to verify whether the cubic reference prism 6, the DASH interferometer 4 and the krypton lamp 2 are all system references, specifically including: the DASH interferometer 4 at the system reference, the theodolite 7 at the system reference, the lifting platform 8, the cubic reference prism 6 at the system reference, the krypton lamp 2 at the system reference and the adjustment platform 1; The theodolite 7 at the system reference is aligned with the cubic reference prism 6 at the system reference and the krypton lamp 2 at the system reference respectively, and the horizontal angle and vertical angle values ​​measured and displayed by the theodolite 7 at the system reference are compared to see whether they are the same, so as to ensure that the cubic reference prism 6 and the krypton lamp 2 light source are at the same system reference state; The system reference of the DASH interferometer 4 is obtained by detecting the position state of the cubic reference prism 6.

[0033] Example 2 A method for assembling and adjusting a DASH interferometer reference determination device is implemented by applying the DASH interferometer reference determination device of embodiment 1, comprising the following steps: S1. Establish DASH interferometer 4 horizontal reference; S2. Establish the same benchmark between krypton lamp 2 and theodolite 7; S3. Establish krypton lamp 2 and DASH interferometer 4 as the system reference, and four-dimensional adjustment lifting platform 5 as the system reference position; S4. Establish krypton lamp 2 and theodolite 7 in the system reference state; S5. Establishing the cubic reference prism 6 and theodolite 7 in the system reference state to achieve the cubic reference prism 6, DASH interferometer 4 and krypton lamp 2 are system references; S6. Verify whether the cubic reference prism 6, DASH interferometer 4 and krypton lamp 2 are all system references. If the result is yes, complete the adjustment; if the result is no, repeat steps S1-S5 until the verification result is yes.

[0034] Specifically: Step S1: Place the DASH interferometer 4 on the four-dimensional adjustable lifting platform 5, fix the plane mirror 3 on the plane of the light entrance window of the DASH interferometer 4, and keep the plane mirror 3 and the light entrance window of the DASH interferometer 4 to have the same reference.

[0035] Place the theodolite 7 on the lifting platform 8 and make the plane mirror 3 at the same level. Adjust the base of the theodolite 7 to make the circular level bubble in the center, and establish the theodolite 7 in a horizontal state; fine-tune the four-dimensional adjustment lifting platform 5 until the center of the crosshairs and the center of the bull's eye coincide in the field of view of the telescope of the theodolite 7, as shown in the figure. Figure 2 As shown, at this time, the DASH interferometer 4 has established a horizontal state, and the four-dimensional adjustment lifting platform 5 is in the initial position.

[0036] Step S2: Rotate the translation knob of the four-dimensional adjustment lifting platform 5 to make the DASH interferometer 4 withdraw from the observation field of the theodolite 7, fix the krypton lamp 2 on the adjustment platform 1 and at the same height as the theodolite 7, and fine-tune the azimuth and elevation knobs of the adjustment platform 1 to make the incident light of the krypton lamp 2 coincide with the center of the crosshairs in the theodolite 7, as shown in FIG. Figure 3 As shown, the theodolite 7 and the krypton lamp 2 light source are in the same reference state at this time.

[0037] Step S3: The four-dimensional adjustment lifting platform 5 moved in step S2 is restored to its initial position, and the DASH interferometer 4 returns to the center of the field of view. The light emitted by the krypton lamp 2 is imaged in the computer 9 through the DASH interferometer 4, and the translation knob of the four-dimensional adjustment lifting platform 5 is fine-tuned to make the interference fringes in the center of the field of view, such as Figure 4 As shown, at this time, the DASH interferometer 4 and the krypton lamp 2 are established as the system reference, and the four-dimensional adjustment lifting platform 5 is the system reference position.

[0038] Step S4: Using the system reference established by the krypton lamp 2 in step S3, rotate the translation knob of the four-dimensional adjustment lifting platform 5 to move the DASH interferometer 4 away from the front of the krypton lamp 2 light source, then place the theodolite 7 at the same height as the krypton lamp 2, adjust the azimuth and pitch of the theodolite 7, so that the center of the crosshairs seen in the telescope of the theodolite 7 coincides with the incident light of the krypton lamp 2, as shown in FIG. Figure 3 As shown, at this time, the krypton lamp 2 and theodolite 7 establish the same system reference state.

[0039] Step S5: Coarsely adjust the translation knob of the four-dimensional adjustment lifting platform 5 so that the DASH interferometer 4 appears in the telescope field of view of the theodolite 7, and finely adjust the tooling allowance of the cubic reference prism 6 so that the light emitted by the theodolite 7 is reflected by the cubic reference prism 6, and the center of the crosshairs and the reflected light of the cubic reference prism 6 are seen to coincide in the telescope field of the theodolite 7, as shown in FIG. Figure 2 As shown, at this time, the cubic reference prism 6 and theodolite 7 establish the same system reference state.

[0040] Step S6: Use the theodolite 7 to align the krypton lamp light source and the cubic reference prism 6 in turn, and compare whether the horizontal angle and vertical angle values ​​measured and displayed by the theodolite 7 before and after are the same, to ensure that the cubic reference prism 6 and the krypton lamp 2 light source are in the same system reference state, and the DASH interferometer 4 system reference is obtained by detecting the position state of the cubic reference prism 6.

[0041] The method of this embodiment determines the reference of the Doppler asymmetric spatial heterodyne DASH interferometer 4 system by using a cubic reference prism 6. The application of this technology greatly improves the detection sensitivity and accuracy of the system. In the assembly process between the satellite platform and the DASH interferometer, the use of the cubic reference prism 6 simplifies the alignment and calibration steps. In addition, the design and manufacturing accuracy of the cubic reference prism 6 directly affects the performance of the interferometer system, so extremely high precision control is required during the processing and detection process.

[0042] The high processing accuracy and excellent optical performance of the cubic reference prism 6 enable high-precision alignment during the assembly process, thus greatly facilitating the assembly between the satellite platform and the DASH interferometer. This convenience is not only reflected in the simplification of the assembly process, but also in the convenience of system maintenance and calibration, because the stability and reliability of the cubic reference prism 6 reduce the system calibration requirements and maintenance costs.

[0043] In summary, the application of cubic reference prism 6 in the DASH interferometer system not only improves the detection capability of the system, but also provides great convenience for the assembly between the satellite platform and the interferometer, which has important practical significance in space remote sensing and military applications.

[0044] Obviously, the above embodiments are merely examples for the purpose of clear explanation, and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived therefrom are still within the scope of protection of the invention.

Claims

1. A DASH interferometer reference determination device, comprising: A DASH interferometer (4), a four-dimensional adjustment lifting platform (5), a computer (9), a theodolite (7) and a lifting platform (8), wherein the DASH interferometer (4) is arranged on the four-dimensional adjustment lifting platform (5); the computer (9) is connected to the DASH interferometer (4) by signal; and the device is characterized in that it also includes: an adjustment platform (1), a krypton lamp (2), a plane mirror (3) and a cubic reference prism (6); The plane mirror (3) is detachably connected to the window plane of the light entrance of the DASH interferometer (4); The krypton lamp (2) is detachably connected to the adjustment platform (1); The theodolite (7) is detachably connected to the lifting platform (8); The cubic reference prism (6) is movably connected to the DASH interferometer (4), and the normal line of the reflection surface of the cubic reference prism (6) is parallel to the optical axis of the light inlet of the DASH interferometer (4).

2. The DASH interferometer reference determination device according to claim 1, characterized in that: The equipment used to establish the horizontal reference of the DASH interferometer (4) includes: the DASH interferometer (4), a four-dimensional adjustment lifting platform (5), a plane mirror (3), a theodolite (7) and a lifting platform (8); The plane mirror (3) and the light entrance window of the DASH interferometer (4) have the same reference; The theodolite (7) and the plane mirror (3) are at the same level; The theodolite (7) is in a horizontal state; In the field of view of the theodolite (7) telescope, the center of the crosshairs coincides with the center point of the plane mirror (3).

3. The DASH interferometer reference determination device according to claim 2, characterized in that: When establishing the krypton lamp (2) and the theodolite (7) as the same reference, the equipment used includes: theodolite (7), a lifting platform (8), the krypton lamp (2) and an adjustment platform (1); The krypton lamp (2) mounted on the adjustment platform (1) and the theodolite (7) mounted on the lifting platform (8) are at the same height; The incident light from the krypton lamp (2) coincides with the center of the crosshairs in the theodolite (7).

4. The DASH interferometer reference determination device according to claim 3, characterized in that: When the krypton lamp (2) and the DASH interferometer (4) are established as the system reference, and the four-dimensional adjustment lifting platform 5 is established as the system reference position, the device used includes: a DASH interferometer (4), a four-dimensional adjustment lifting platform (5), a theodolite (7), a lifting platform (8), a krypton lamp (2), an adjustment platform (1) and a computer (9); The position of the DASH interferometer (4) mounted on the four-dimensional adjustable lifting platform (5) when it is located at a horizontal reference; The theodolite (7), the lifting platform (8), the krypton lamp (2) and the adjustment platform (1) are located at positions when the krypton lamp (2) and the theodolite (4) are on the same reference; The light emitted by the krypton lamp (2) is imaged in the computer (9) through the DASH interferometer (4), and the interference fringes are located at the center of the field of view.

5. The DASH interferometer reference determination device according to claim 4, characterized in that: The device used to establish that the krypton lamp (2) and the theodolite (7) are in a system reference state comprises: the theodolite (7), a lifting platform (8), and the krypton lamp (2) in the system reference state; The theodolite (7) mounted on the lifting platform (8) is at the same height as the krypton lamp (2) at the system reference; The incident light from the krypton lamp (2) coincides with the center of the crosshairs in the theodolite (7).

6. The DASH interferometer reference determination device according to claim 5, characterized in that: The equipment used to establish the cubic reference prism (6) and theodolite (7) in the system reference state includes: a DASH interferometer (4) in the system reference, a theodolite (7) in the system reference, a lifting platform (8), and a cubic reference prism (6) mounted on the DASH interferometer (4); The light emitted by the theodolite (7) is reflected by the cubic reference prism (6), and the center of the crosshairs and the light reflected by the cubic reference prism (6) are seen to coincide in the telescope field of view of the theodolite (7). At this time, the cubic reference prism (6), the DASH interferometer (4) and the krypton lamp (2) are all system references.

7. The DASH interferometer reference determination device according to claim 6, characterized in that: A device used to verify whether the cubic reference prism (6), the DASH interferometer (4) and the krypton lamp (2) are all system references, specifically comprising: a DASH interferometer (4) at the system reference, a theodolite (7) at the system reference, a lifting platform (8), a cubic reference prism (6) at the system reference, a krypton lamp (2) at the system reference and an adjustment platform (1); The theodolite (7) at the system reference is aligned with the cubic reference prism (6) at the system reference and the krypton lamp (2) at the system reference respectively, and the horizontal angle and vertical angle values ​​measured and displayed by the theodolite (7) at the system reference are compared to see whether they are the same, so as to ensure that the cubic reference prism (6) and the krypton lamp (2) are at the same system reference state; The system reference of the DASH interferometer (4) is obtained by detecting the position state of the cubic reference prism (6).

8. A method for assembling and adjusting a DASH interferometer reference determination device, characterized in that: The DASH interferometer reference determination device according to claim 7 is implemented, comprising the following steps: S1. Establish the horizontal reference of DASH interferometer (4); S2. Establish the same reference for the krypton lamp (2) and theodolite (7); S3. Establish krypton lamp (2) and DASH interferometer (4) as the system reference, and four-dimensional adjustment lifting platform 5 as the system reference position; S4. Establishing the krypton lamp (2) and theodolite (7) in a system reference state; S5. Establishing the cubic reference prism (6) and theodolite (7) in the system reference state, so that the cubic reference prism (6), the DASH interferometer (4) and the krypton lamp (2) are all system references; S6. Verify whether the cubic reference prism (6), DASH interferometer (4) and krypton lamp (2) are all system references. If the result is yes, the adjustment is completed; if the result is no, repeat steps S1-S5 until the verification result is yes.

9. The method for assembling and adjusting the DASH interferometer reference determination device according to claim 8, characterized in that: When executing step S2, it is necessary to rotate the translation knob of the four-dimensional adjustment lifting platform (5) to make the DASH interferometer (4) evacuate the observation field of the theodolite (7); When executing step S3, the four-dimensional adjustment lifting platform (5) moved in step S2 needs to be restored to its initial position, and the DASH interferometer (4) returns to the center of the field of view.

10. The method for assembling and adjusting the DASH interferometer reference determination device according to claim 8, characterized in that: Step S4 uses the system reference established by the krypton lamp (2) in step S3, and when executing step S4, the translation knob of the four-dimensional adjustment lifting platform (5) needs to be rotated to make the DASH interferometer (4) move away from the front of the krypton lamp (2) light source; When executing step S5: the translation knob of the four-dimensional adjustment lifting platform (5) is roughly adjusted so that the DASH interferometer (4) reappears in the telescope field of view of the theodolite (7).

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