CN204902852U - Star is a star angular distance testing arrangement for simulator - Google Patents

Abstract

The utility model discloses a special test device for a star simulator, which is mainly composed of a vibration isolation optical platform, a height adjustment mechanism, an angle adjustment mechanism, a locking positioning mechanism and an optical theodolite. The vibration isolation optical platform is placed on the ground, the height adjustment mechanism is fixed on the vibration isolation optical platform, the angle adjustment mechanism is fixed on the height adjustment mechanism, the locking positioning mechanism is fixed on the angle adjustment mechanism, and the optical theodolite is placed on the ground. The device can realize the precise measurement of the angular distance between the stars of the star simulator.

Description

Inter-satellite angular distance test device for star simulator

technical field

The utility model relates to the testing technology of space vehicle ground calibration equipment, in particular to an inter-satellite angular distance testing device for a star simulator.

Background technique

The star simulator is the ground calibration equipment of the star sensor. Usually the simulation accuracy of the star simulator is reflected in the accuracy of the angular distance between the stars, that is, the accuracy of the angular distance between the stars of the star simulator directly determines the working accuracy of the star sensor. Under laboratory conditions, the accuracy of the inter-satellite angular distance can be calculated by measuring the azimuth and elevation angles of the simulated star points one by one, and using empirical formulas.

The measurement of inter-satellite angular distance is a crucial step in the development of a star simulator. In order to improve the simulation accuracy of the star simulator, it is necessary to build an effective and accurate inter-satellite angular distance test device. The test device should have the characteristics of high measurement accuracy, stable and reliable performance, and easy operation.

Contents of the invention

The utility model aims at the demand existing in the prior art, and designs an inter-satellite angular distance testing device for a star simulator. For star simulators of different dimensions, the precise measurement of the angular distance between the stars of the star simulator is realized by using a vibration-isolated optical platform, a height adjustment mechanism, an angle adjustment mechanism, a locking positioning mechanism and an optical theodolite.

The technical scheme adopted by the utility model to realize the requirement of the prior art is: to design a set of inter-satellite angular distance testing device for a star simulator, which is composed of a vibration-isolation optical platform, a height adjustment mechanism, an angle adjustment mechanism, a locking positioning mechanism and an optical theodolite .

The vibration isolation optical platform is placed on the ground, the height adjustment mechanism is fixed on the vibration isolation optical platform, the angle adjustment mechanism is fixed on the height adjustment mechanism, the locking positioning mechanism is fixed on the angle adjustment mechanism, and the optical theodolite is placed on the ground. Wherein, the angle adjustment mechanism includes a pitch angle adjustment module, an azimuth angle adjustment module and a rotation angle adjustment module; the locking positioning mechanism includes a clamping module and a limit locking module.

When in use, first place the star simulator on the locking positioning mechanism, the clamping module is used to place star simulators of different dimensions, and the limit locking module is used to fix the axial and circumferential positions of the star simulator; then Adjust the optical theodolite objective lens to the horizontal position and keep it still; secondly, use the height adjustment mechanism to adjust the relative height between the star simulator and the optical theodolite, so that the optical axis of the star simulator and the optical theodolite are basically at the same height; finally use the optical theodolite eyepiece to observe The relative position of the center of the reticle and the star point of the center of the star simulator, keep the objective lens of the optical theodolite fixed, use the angle adjustment module to adjust the azimuth and elevation angle of the star simulator, until the star point of the center of the star simulator coincides with the center of the reticle, and Record the readings of the optical theodolite at the current position, and similarly, the angular position of each star point can be measured.

To sum up, the star-to-star angular distance testing device for the star simulator of the present invention is mainly composed of a vibration-isolation optical platform, a height adjustment mechanism, an angle adjustment mechanism, a locking positioning mechanism and an optical theodolite. The utility model has the advantages of simple composition and stable performance, and can meet the inter-satellite angular distance measurement requirements of the star simulator.

Description of drawings

Fig. 1 is the composition and structural representation of the star simulator of the present invention with the inter-satellite angular distance testing device;

Fig. 2 is a schematic diagram of the mutual positions of the vibration isolation optical platform, the height adjustment mechanism, the angle adjustment mechanism and the locking positioning mechanism of the inter-star angular distance testing device for the star simulator of the present invention;

Fig. 3 is the composition and structural representation of the angle adjustment mechanism of the inter-satellite angular distance testing device for the star simulator of the present invention;

Fig. 4 is a schematic diagram of the composition and structure of the locking and positioning mechanism of the inter-satellite angular distance testing device for the star simulator of the present invention.

Detailed ways

In order to make the purpose, technical solutions and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below in conjunction with the embodiments of the present utility model. It should be noted that, in the drawings or description, similar or identical elements all use the same reference signs.

Fig. 1 is the composition and structure diagram of a kind of inter-satellite angular distance testing device for star simulator provided by the embodiment of the utility model, the inter-satellite angular distance testing device for star simulator is mainly composed of vibration isolation optical platform 1, height adjustment mechanism 2, angle The adjustment mechanism 3, the locking positioning mechanism 4 and the optical theodolite 12 are composed.

Fig. 2 is a schematic diagram of the mutual positions of the vibration isolation optical platform 1, the height adjustment mechanism 2, the angle adjustment mechanism 3 and the locking positioning mechanism 4 of the inter-star angular distance testing device for the star simulator of the utility model, and the vibration isolation optical platform 1 is placed on the ground , the height adjustment mechanism 2 is fixed on the vibration-isolation optical platform 1 through the first connecting screw 5 and the second connecting screw 6, and the angle adjusting mechanism 3 is fixed on the height adjustment through the connecting plate 7 with the third connecting screw 8 and the fourth connecting screw 9. On the mechanism 2, the locking and positioning mechanism 4 is fixed on the angle adjustment mechanism 3 through the fifth connecting screw 10 and the sixth connecting screw 11, and the optical theodolite 12 is placed on the ground.

Preferably, the angle adjustment mechanism 3 is mainly composed of a rotation angle adjustment module 31, a pitch angle adjustment module 32, and an azimuth angle adjustment module 33. Schematic diagram of the composition and structure of the adjustment mechanism 3.

Preferably, the locking positioning mechanism 4 is mainly composed of a clamping module 41, a locking module 42, a first limit screw 43 and a second limit screw 44, as shown in FIG. Schematic diagram of the composition and structure of the locking and positioning mechanism 4 of the angular distance testing device.

When in use, first, the star simulator to be measured is placed on the locking positioning mechanism 4, the clamping module 41 is used to place the star simulator to be measured in different dimensions, and the locking module 42 is used to fix the axial direction of the star simulator. and circumferential position; then, adjust the optical theodolite 12 objective lenses to the horizontal position and keep still; secondly, utilize the height adjustment mechanism 2 to adjust the relative height of the star simulator and the optical theodolite 12, so that the star simulator optical axis and the optical theodolite 12 light The axes are basically at the same height; at last, observe the relative position of the crosshair center in the 12 eyepieces of the optical theodolite and the star point of the star simulator center, keep the 12 objective lenses of the optical theodolite still, and utilize the angle adjustment module 3 to adjust the azimuth and angle of the star simulator Elevation angle, until the star point in the center of the star simulator coincides with the center of the crosshair, and record the readings of the optical theodolite 12 at the current position. Similarly, the angular position of each star point can be measured.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present utility model, and are not intended to limit it; although the utility model has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: It is still possible to modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention .

Claims (1)

1. an angular distance proving installation between star simulator star, is characterized in that, comprises vibration isolation optical table, height regulating mechanism, angle-adjusting mechanism, locking positioning mechanism and optical theodolite;

Described angle-adjusting mechanism comprises luffing angle adjusting module, orientation angles adjusting module and anglec of rotation adjusting module;

Described locking positioning mechanism comprises self-clamping module and limiting locking module,

Described vibration isolation optical table is placed in ground, described height regulating mechanism is fixed on described vibration isolation optical table, described angle-adjusting mechanism is fixed on described height adjusting, locking positioning mechanism is fixed on angle-adjusting mechanism, optical theodolite is placed in ground, wherein, angle-adjusting mechanism comprises luffing angle adjusting module, orientation angles adjusting module and anglec of rotation adjusting module; Locking positioning mechanism comprises self-clamping module and limiting locking module.