A telescope guidance method and its application

Abstract

The present invention relates to the field of telescope guidance technology, and specifically provides a telescope guidance method and application thereof. The method is for a telescope whose azimuth rotation range is within an interval, and according to the relationship between the azimuth of the original guidance data of the telescope and the current pointing of the telescope, the rotation trajectory of the telescope is planned, and then the actual guidance data of the telescope is obtained to guide the telescope. At the same time, different guidance methods for the telescope are planned for stars, satellites and temporary targets. The method of the present invention can ensure that the telescope will not generate unnecessary reverse cross-circle rotation before the observation of a single target begins, and can also try to ensure that reverse cross-circle rotation will not be generated during the observation of a single target, thereby reducing the waiting time for target observation, reducing the probability of interruption of target observation, and increasing the effective observation time.

Description

Technical Field

[0001] The invention relates to the technical field of telescope guidance, and specifically provides a telescope guidance method and application thereof. Background Art

[0002] Since Galileo made the first telescope in 1609, telescope technology has continued to develop, from optical bands to full bands, from ground to space, observation capabilities have become increasingly stronger, and more celestial information can be captured. Telescopes are playing an increasingly important role in the fields of astronomical observation and celestial tracking.

[0003] A ground-based telescope is a type of astronomical telescope. A ground-based telescope is a telescope installed on the ground. Its azimuth angle rotation range is usually limited by the structure of the telescope bracket, the geographical location of the observation site, and the observation target. Some ground-based telescopes are designed to have a structure that can rotate 360 ​​degrees in azimuth, so as to observe any position in the sky. These telescopes usually have a sophisticated tracking system and a stabilization device to ensure the accuracy and stability of the observation. This type of telescope can observe any position in the sky without moving. Unlike the above telescopes, some horizontal telescopes can reach an azimuth rotation range of -270° to +270° through mechanical structure design, and the elevation range still covers 0° to 90°. The design cost and maintenance difficulty of this type of telescope are relatively low. However, in actual applications, since the guidance data of the observed target is still within the range of 0° to 360°, when using this type of telescope to observe and track the target, the telescope may point to "rotate in a big circle", resulting in short effective observation time, low observation efficiency, and discontinuous observation of this type of telescope. Therefore, how to better guide this type of telescope to track the target becomes the key to the application of this type of telescope. Summary of the invention

[0004] In order to solve the above problems, the present invention provides a telescope guidance method and its application, for an azimuth rotation range of For telescopes within the interval, the rotation trajectory of the telescope is planned for stars, satellites and temporary targets based on the relationship between the original guidance data azimuth of the telescope and the current pointing of the telescope. This prevents the telescope from making unnecessary reverse cross-circle rotations, reduces the waiting time for target observation, reduces the probability of interruption of target observation, and increases the effective observation time.

[0005] The telescope guiding method provided by the present invention comprises:

[0006] Set the azimuth of the original guidance data obtained based on the target position to ,in, , Indicates the serial number of the original guidance data. The actual azimuth angle of the telescope is currently , the azimuth angle range that the telescope can point to is ,in, , , make the following judgment:

[0007] like , then to guide the telescope for the actual guidance data;

[0008] like , then to guide the telescope for the actual guidance data;

[0009] like ,when , then To guide the telescope for the actual guidance data; , then To actually guide the telescope for the data.

[0010] An application of a telescope guidance method includes: observing known celestial bodies, known trajectory targets and temporary targets based on the telescope guidance method.

[0011] Preferably, the known celestial body is a star, and the known trajectory target is a satellite.

[0012] Preferably, the star observation method is:

[0013] H1: Calculation Azimuth of the star at the moment ,calculate Azimuth of the star at the moment ,in, represents the current time of observing the star, Indicates the observation time of the star; make the following judgments:

[0014] like , proceed to the next step, otherwise the telescope rotation trajectory planning is not performed;

[0015] H2: If , then use the positive interval Plan the telescope rotation trajectory; otherwise proceed to the next step;

[0016] H3: When , then use a negative interval Plan the telescope rotation trajectory; otherwise proceed to the next step;

[0017] H4: Calculate separately and The absolute value of , then use a negative interval Plan the telescope rotation trajectory; if , then use the positive interval Plan the telescope rotation trajectory, where: Indicates the encoder azimuth angle value corresponding to the actual pointing direction of the telescope, .

[0018] Preferably, the observation time of the star The value should not be less than 10 minutes.

[0019] Preferably, the satellite observation method is:

[0020] W1: Settings is the current moment of satellite observation, calculate The azimuth corresponding to the satellite position at the moment , make the following judgment:

[0021] like , then proceed to the next step, otherwise the telescope rotation trajectory is not planned;

[0022] W2: From From the moment, all the azimuth angle values ​​on the satellite motion trajectory are traversed in order from small to large time. , make the following judgment:

[0023] If there is a satisfy , then use the positive interval Plan the telescope rotation trajectory; otherwise proceed to the next step;

[0024] W3: If there is a satisfy , then use a negative interval Plan the telescope rotation trajectory, otherwise proceed to the next step;

[0025] W4: Calculate separately and The absolute value of , then use a negative interval Plan the telescope rotation trajectory; if , then use the positive interval Plan the telescope rotation trajectory.

[0026] Preferably, the observation method of the temporary target is:

[0027] L1: Setting is the current moment of the temporary target observation, The azimuth corresponding to the target position obtained by the guidance source at the moment is , make the following judgment:

[0028] like , then proceed to the next step, otherwise the telescope rotation trajectory is not planned;

[0029] L2: Receive the real-time position of the target obtained by the two-frame guidance source, and determine the azimuth and speed direction based on the two frames of data. If the azimuth and speed are positive, use the negative interval Plan the telescope rotation trajectory; if the azimuth velocity is negative, use the positive interval Plan the telescope rotation trajectory.

[0030] Compared with the prior art, the present invention can achieve the following beneficial effects:

[0031] The embodiment of the present invention proposes a method for The invention discloses a guidance method for a telescope within a range. The method plans the rotation trajectory of the telescope according to the azimuth of the original guidance data of the telescope and the current pointing of the telescope. The method can ensure that the telescope will not produce unnecessary reverse cross-circle rotation before the start of single target observation, and can also ensure as much as possible that no reverse cross-circle rotation will occur during the single target observation, thereby reducing the waiting time for target observation, reducing the probability of target observation interruption, and increasing the effective observation time.

[0032] At the same time, different observation methods of the telescope are planned for stars, satellites and temporary targets, which can greatly reduce the occurrence of the telescope's azimuth axis rotating in the opposite direction across the circle during target observation, ensure the continuity of the observation work, extend the effective observation time, and reduce the occurrence of the telescope's azimuth axis rotating in the opposite direction across the circle at the beginning of observation, thereby reducing the observation waiting time. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 is a flow chart of a telescope guiding method provided according to an embodiment of the present invention;

[0034] Figure 2 is a schematic diagram of the azimuth rotation range of a telescope provided according to an embodiment of the present invention;

[0035] Figure 3 is a flow chart of a method for tracking stars through a telescope provided according to an embodiment of the present invention;

[0036] Figure 4 is a flow chart of a method for tracking satellites through a telescope provided according to an embodiment of the present invention;

[0037] Figure 5 It is a flow chart of a method for tracking a temporary target by a telescope provided according to an embodiment of the present invention. DETAILED DESCRIPTION

[0038] In order to make the purpose, technical scheme and advantages of the invention clearer, the invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are only used to explain the invention and do not constitute a limitation to the invention. Similar components in different embodiments use associated similar component numbers. In the following embodiments, many detailed descriptions are to enable the invention to be better understood. However, those skilled in the art can easily recognize that some of the features can be omitted in different situations, or can be replaced by other components, materials, and methods. In some cases, some operations related to the invention are not shown or described in the specification, in order to avoid the core part of the invention being overwhelmed by too much description, and for those skilled in the art, it is not necessary to describe these related operations in detail, and they can fully understand the related operations according to the description in the specification and the general technical knowledge in the art.

[0039] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other to form various implementation methods. At the same time, the steps or actions in the method description can also be interchanged or adjusted in a manner that is obvious to those skilled in the art. Therefore, the various sequences in the specification and the drawings are only for the purpose of clearly describing a certain embodiment and are not meant to be a necessary sequence, unless otherwise specified that a certain sequence must be followed.

[0040] In the description of the invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the 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 a limitation on the invention. In addition, the terms "first", "second", etc. are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. In the description of the invention, unless otherwise specified, the meaning of "multiple" is two or more.

[0041] In the description of the invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" 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 invention can be understood according to specific circumstances.

[0042] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments.

[0043] like Figure 1 As shown, the azimuth rotation range is The telescope, , an embodiment of the present invention provides a telescope guidance method, which is as follows:

[0044] like Figure 2 As shown, when the azimuth rotation range of the telescope is When the actual pointing azimuth of the telescope is Its observation range can still cover However, since the azimuth angle and encoder value of the actual guidance data of the telescope do not correspond to the observation range one by one, when tracking the target, it is necessary to plan the trajectory of the telescope tracking the target, that is, the rotation direction, and convert the azimuth angle in the original guidance data obtained according to the actual position of the target to make it conform to the range. , becomes actual guidance data that can be recognized by the telescope, and can then be used by the telescope for telescope guidance. When tracking a target through such a telescope, usually, the deviation span between the azimuth angle corresponding to the target position at the previous moment and the azimuth angle corresponding to the target position at the next moment will not be very large, because the target is in continuous motion, so there will be no large changes in the azimuth angle.

[0045] Since the pitch angle of the telescope is not affected by the azimuth rotation range, the embodiment of the present invention does not consider the pitch angle in the actual guidance data of the telescope.

[0046] The azimuth rotation range is The complete rotation trajectory of the telescope can be divided into the negative interval and positive interval , and in the interval Within the range, the rotation trajectories of the telescopes do not overlap. and is the trajectory overlap interval.

[0047] In the embodiment of the present invention, represents the azimuth of the original guidance data obtained according to the position of the target, and the azimuth satisfies ,in, Indicates the serial number of the original boot data, with Indicates the azimuth that the telescope is currently pointing to, and this azimuth satisfies .

[0048] Azimuth of the original guidance data and the current actual pointing azimuth Make the following judgment:

[0049] like , indicating the azimuth of the original guidance data Corresponding to the non-overlapping interval of the positive interval, at this time, no matter which interval the telescope is currently pointing to, To guide the telescope's rotation for actual guidance data;

[0050] like , indicating the azimuth of the original guidance data In the non-overlapping interval corresponding to the negative interval, at this time, no matter which interval the telescope is actually pointing to, To guide the telescope's rotation for actual guidance data;

[0051] like , indicating the azimuth of the original guidance data In the overlapping interval of the corresponding positive interval, at this time, if the azimuth angle of the telescope is actually pointed at satisfy , that is, the actual azimuth of the telescope is currently in the positive interval, then To guide the telescope to rotate for the actual guidance data; if , that is, the actual azimuth of the telescope is currently in the negative range, then To actually guide the telescope for the data.

[0052] Through the above judgment, the original guidance data can be converted into actual guidance data that can be recognized by the telescope to guide the telescope.

[0053] Based on the above-mentioned telescope guidance method, an embodiment of the present invention also proposes the application of the telescope guidance method, including the application of tracking known celestial bodies, known trajectory targets and temporary targets. The embodiment of the present invention specifically proposes an observation method for observing stars, satellites and temporary targets through this type of telescope.

[0054] When observing a target, once the initial azimuth of the actual guidance data is determined, when the azimuth of the original guidance data is subsequently converted into the azimuth of the actual guidance data, the primary guidance standard should be to ensure guidance continuity. For example, if the telescope is currently pointing at -100°, it belongs to the negative azimuth interval. The azimuth of the original guidance data at the current moment is 359.99°, and the azimuth of the actual guidance data corresponding to this moment is -0.01°; if the azimuth of the original guidance data at the next moment is 0.01°, the azimuth of the actual guidance data at this moment is still 0.01°; if the azimuth of the original guidance data at the next moment is 91°, the azimuth of the actual guidance data at this moment is still 91°. This example shows that even if the initial actual guidance data uses a negative azimuth interval, in order to ensure the continuity of the actual guidance data, the actual guidance data at a certain moment in the future may still be a positive number and use a positive azimuth interval, and vice versa.

[0055] In view of the above telescope guidance method, when the azimuth of the original guidance data is in the interval When the azimuth of the original guidance data is in the interval When the azimuth angle of the original guidance data is less than 360°, the azimuth angle obtained by subtracting 360° from the azimuth angle of the original guidance data can be used as the actual guidance data for telescope guidance. These two cases are unique. Therefore, in practical applications, we will not repeat how to obtain the actual guidance data in the above two cases. We will only use the azimuth angle of the original guidance data in the interval Discuss the situation within the scope.

[0056] Embodiment 1: Use this type of telescope to observe stars.

[0057] like Figure 3 As shown, the rotation interval is in the range The method of observing stars with a telescope in the room is as follows:

[0058] Star tracking is one of the important functions of the horizontal telescope. This function plays an important role in astronomical observation, pointing correction of observation equipment and astronomical positioning. The commonly used star pointing calculation tool is the basic astronomy standard code toolkit SOFA. The telescope control system inputs the UTC time, the address of the telescope observation station and the right ascension and declination information of the star to accurately calculate the position (azimuth and pitch angle) of the star at the corresponding time at the observation station, thereby guiding the telescope to observe stars. Normally, the azimuth angle of the star changes slowly, and the star observation time is usually short. Therefore, for star observation, it is generally only necessary to ensure that the telescope does not rotate in the opposite direction within 10 minutes. Set the observation time of the star to , For the sake of safety, the embodiment of the present invention will The value is 30 minutes.

[0059] H1: Settings is the current time of star observation, calculate Azimuth of the star at the moment ,calculate Azimuth of the star at the moment , the azimuth of the star is the original guidance data, Indicates the azimuth of the last raw guidance data of star observation. Make the following judgment:

[0060] like , then proceed to the next step, otherwise it indicates In the interval or At this time, the actual guidance data of the corresponding telescope are or , there is no need to plan the telescope's rotation trajectory.

[0061] H2: If , it means that in the complete star observation process, the original guidance data corresponds to the transition from the overlapping area of ​​the positive interval to the non-overlapping area of ​​the positive interval. Therefore, the positive interval is used to plan the telescope rotation trajectory, that is, the actual guidance data obtained by conversion is in the positive interval to guide the telescope rotation; if it does not meet , then proceed to the next step of judgment.

[0062] H3: If , it means that in the complete star observation process, the original guidance data corresponds to the transition from the overlapping area of ​​the positive interval to the non-overlapping area of ​​the negative interval. Therefore, the negative interval is used to plan the telescope rotation trajectory, that is, the actual guidance data obtained by conversion is in the negative interval to guide the telescope rotation; if it does not meet , then proceed to the next step of judgment.

[0063] H4: If the previous judgment is not satisfied , then it means and Both are in the overlapping area of ​​the positive interval. At this time, the telescope can be guided in the positive interval or the negative interval. In order to enable the telescope to track the target in a shorter time and extend the effective observation time, it is necessary to select the nearest guidance distance for telescope guidance.

[0064] Calculate separately and The absolute value of , then use a negative interval Plan the telescope's rotation trajectory, that is, use negative intervals The azimuth angle is the actual guidance data for telescope guidance, that is ;like , then use the positive interval Plan the telescope rotation trajectory, that is, use the positive interval The azimuth angle is the actual guidance data for telescope guidance, that is .in, Indicates the encoder azimuth angle value corresponding to the actual pointing direction of the telescope, .

[0065] Embodiment 2: Using this type of telescope to track satellites.

[0066] When using a horizontal telescope to track satellites, two-line orbital elements (TLE) are usually used to calculate the observable orbit of the satellite and guide the telescope for tracking observation. Two-line orbital elements are a kind of orbit encoding method. Using a suitable prediction model at a given epoch, the position and velocity of the satellite at any point in the orbit can be estimated with a certain accuracy. The calculation model corresponding to the two-line orbital elements is the simplified perturbations model. The SGP4 and SDP4 models are usually used to calculate the motion trajectory of satellites and space debris during the observable time period.

[0067] The satellite's motion trajectory includes a time series, as well as the azimuth and elevation angles corresponding to each time point in the time series. The telescope uses the points on the satellite's motion trajectory as the original guidance data, and then obtains the actual guidance data to guide the telescope to rotate for tracking and shooting. Figure 4 As shown, the specific method is as follows:

[0068] W1: Settings is the current moment of satellite observation, calculate The azimuth corresponding to the satellite position at the moment , the satellite's azimuth is the original guidance data, and the following judgment is made:

[0069] like , then proceed to the next step, otherwise it indicates In the interval or At this time, the actual guidance data of the corresponding telescope are or , there is no need to plan the telescope's rotation trajectory.

[0070] W2: From From the moment, all the azimuth angle values ​​on the satellite motion trajectory are traversed in order from small to large time. , Indicates from From the moment, any azimuth angle value on the satellite motion trajectory is judged as follows:

[0071] If there is a satisfy , it means that in the complete satellite tracking process, the original guidance data corresponds to the transition from the overlapping area of ​​the positive interval to the non-overlapping area of ​​the positive interval. Therefore, the positive interval is used Plan the telescope rotation trajectory, that is, the actual guidance data obtained by conversion is in the positive interval to guide the telescope rotation; if it does not meet , then proceed to the next step of judgment.

[0072] W3: If there is a satisfy , it means that in the complete satellite tracking process, the original guidance data corresponds to the transition from the overlapping area of ​​the positive interval to the non-overlapping area of ​​the negative interval. Therefore, the negative interval is used. Plan the telescope rotation trajectory, that is, the actual guidance data obtained by conversion is in the negative interval to guide the telescope rotation; if it does not meet , then proceed to the next step of judgment.

[0073] W4: If the previous step does not satisfy the judgment , then it means and Both are in the overlapping area of ​​the positive interval. At this time, the telescope can be guided in the positive interval or the negative interval. In order to ensure the continuity of telescope guidance, the nearest guidance distance needs to be selected for telescope guidance.

[0074] Calculate separately and The absolute value of , then use a negative interval Plan the telescope's rotation trajectory, that is, use negative intervals The azimuth angle is the actual guidance data for telescope guidance, that is ;like , then use the positive interval Plan the telescope rotation trajectory, that is, use the positive interval The azimuth angle is the actual guidance data for telescope guidance, that is .in, Indicates the encoder azimuth angle value corresponding to the actual pointing direction of the telescope, .

[0075] Embodiment 3: Using this type of telescope to track temporary targets.

[0076] Tracking temporary targets with a telescope is usually called real-time external guidance. The real-time position of the target is obtained by a remote device with target capture function, i.e., the guidance source. The real-time position of the target is sent to the local telescope control system through the network, and then converted into telescope guidance instructions by the local telescope control system to guide the telescope. Unlike star tracking and satellite tracking, when the telescope performs real-time external guidance on the target, it does not know the trajectory of the target in the future, so real-time external guidance cannot plan the orientation according to the entire target trajectory.

[0077] like Figure 5 As shown, the observation method of the temporary target in the embodiment of the present invention is as follows:

[0078] L1: Setting is the current moment of the temporary target observation, The azimuth corresponding to the target position obtained by the guidance source at the moment is , make the following judgment:

[0079] like , then proceed to the next step, otherwise it indicates In the interval or At this time, the actual guidance data of the corresponding telescope are or , there is no need to plan the telescope's rotation trajectory.

[0080] L2: Receive the real-time position of the target obtained by two frames of guidance sources, and determine the azimuth speed direction based on the two frames of data. If the azimuth speed is positive, use the negative interval to plan the telescope rotation trajectory, that is, the actual guidance data obtained by conversion is in the negative interval to guide the telescope to rotate; if the azimuth speed is negative, use the positive interval to plan the telescope rotation trajectory, that is, the actual guidance data obtained by conversion is in the positive interval to guide the telescope to rotate.

[0081] The telescope guidance method provided by the present invention can significantly reduce the occurrence of the telescope's azimuth axis rotating in the opposite direction across the circle during target observation, thereby ensuring the continuity of observation work and extending the effective observation time. It can also reduce the occurrence of the telescope's azimuth axis rotating in the opposite direction across the circle at the beginning of observation, thereby reducing the observation waiting time.

[0082] The embodiment of the present invention will The value is 270°, so the azimuth rotation range of the telescope is , take this value as an example to illustrate the above method:

[0083] For the above values, if the rotation trajectory planning of the telescope when observing the target is unreasonable, the azimuth axis of the telescope may rotate in the opposite direction or during the observation process, for example:

[0084] The telescope is currently in observation idle time, with the azimuth pointing to -180°. At this time, the azimuth of the target to be observed is 175 degrees, and the azimuth limit area will not be passed during the entire observation process. At this time, the best method is to guide the telescope azimuth to -185° and observe in the negative azimuth interval. If the planning is unreasonable, the telescope control system will guide the telescope from -180° to 175° at the beginning of the observation, turning 355°, which will greatly increase the observation waiting time and may reduce the effective observation time.

[0085] During target observation, the target trajectory guidance range may cross the limit area of ​​-270° or 270°. For example, if the azimuth of the original guidance data at the current moment is 269.99°, and the azimuth of the original guidance data at the next moment is 270.01°, the azimuth of the actual guidance data sent to the telescope at the next moment will be -89.99° due to crossing the limit area. At this time, during target observation, it will take a long time to wait for the telescope azimuth axis to rotate in the opposite direction, resulting in a reduction in effective observation time.

[0086] Will The value is 270°, and the actual guidance data and encoder value of the corresponding telescope are within the range The telescope's pointing range still covers , that is, the azimuth angle value of the original guidance data is within the range When obtaining the actual guidance data based on the original guidance data, the range needs to be The original bootstrap data is transformed to the range on for telescope identification.

[0087] When the azimuth of the original guidance data is in the range When the azimuth of the original guidance data is within the range, for example, 45°, the actual guidance data of the telescope has an azimuth of 45°. When the azimuth angle is within, for example, 300°, the actual guidance data of the telescope has an azimuth angle of -60°, and the actual pointing angle of the telescope at -60° is the same as the pointing angle corresponding to 300° in the original data.

[0088] When the azimuth of the original guidance data is in the range For example, 120°, the actual azimuth of the telescope's guidance data is divided into multiple situations. The encoder value of the telescope is used to determine whether the telescope is currently pointing in the interval Above or in the range If in the interval It means that the rotation in the positive interval is closest to 120°, so 120° can be directly used as the azimuth of the actual guidance data. It indicates that the rotation in the negative interval is closest to the direction of 120°, with -240° being the azimuth of the actual guidance data.

[0089] Although the embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and cannot be understood as limiting the present invention. Those skilled in the art may change, modify, replace and modify the above embodiments within the scope of the present invention.

[0090] The above specific implementations of the present invention do not constitute a limitation on the protection scope of the present invention. Any other corresponding changes and modifications made based on the technical concept of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. An application of a telescope guidance method, characterized in that: include: Based on the guidance method of the telescope, observe known celestial bodies, targets with known trajectories, and temporary targets; The guiding method of the telescope comprises: Set the azimuth of the original guidance data obtained based on the target position to ,in, , Indicates the serial number of the original guidance data. The actual azimuth angle of the telescope is currently , the azimuth angle range that the telescope can point to is ,in, , , make the following judgment: like , then to guide the telescope for the actual guidance data; like , then to guide the telescope for the actual guidance data; like ,when , then To guide the telescope for the actual guidance data; , then to guide the telescope for the actual guidance data; The known celestial body is a star, and the known trajectory target is a satellite; The observation method of the star is: H1: Calculation Azimuth of the star at the moment ,calculate Azimuth of the star at the moment ,in, represents the current time of observing the star, Indicates the observation time of the star; make the following judgments: like , proceed to the next step, otherwise the telescope rotation trajectory planning is not performed; H2: If , then use the positive interval Plan the telescope rotation trajectory; otherwise proceed to the next step; H3: When , then use a negative interval Plan the telescope rotation trajectory; otherwise proceed to the next step; H4: Calculate separately and The absolute value of , then use a negative interval Plan the telescope rotation trajectory; if , then use the positive interval Plan the telescope rotation trajectory, where: Indicates the encoder azimuth angle value corresponding to the actual pointing direction of the telescope, ; The satellite observation method is: W1: Settings is the current moment of satellite observation, calculate The azimuth corresponding to the satellite position at the moment , make the following judgment: like , then proceed to the next step, otherwise the telescope rotation trajectory is not planned; W2: From From the moment, all the azimuth angle values ​​on the satellite motion trajectory are traversed in order from small to large time. , make the following judgment: If there is a satisfy , then use the positive interval Plan the telescope rotation trajectory; otherwise proceed to the next step; W3: If there is a satisfy , then use a negative interval Plan the telescope rotation trajectory, otherwise proceed to the next step; W4: Calculate separately and The absolute value of , then use a negative interval Plan the telescope rotation trajectory; if , then use the positive interval Plan the telescope's rotation trajectory; The observation method of the temporary target is: L1: Setting is the current moment of the temporary target observation, The azimuth corresponding to the target position obtained by the guidance source at the moment is , make the following judgment: like , then proceed to the next step, otherwise the telescope rotation trajectory is not planned; L2: Receive the real-time position of the target obtained by the two-frame guidance source, and determine the azimuth and speed direction based on the two frames of data. If the azimuth and speed are positive, use the negative interval Plan the telescope rotation trajectory; if the azimuth velocity is negative, use the positive interval Plan the telescope rotation trajectory.

2. Application of the telescope guidance method according to claim 1, characterized in that: Observation duration of the star in question The value should not be less than 10 minutes.

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