CN104035976B - A method for storage and retrieval gps satellite broadcast ephemeris data - Google Patents

A method for storage and retrieval gps satellite broadcast ephemeris data Download PDF

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CN104035976B
CN104035976B CN201410219884.XA CN201410219884A CN104035976B CN 104035976 B CN104035976 B CN 104035976B CN 201410219884 A CN201410219884 A CN 201410219884A CN 104035976 B CN104035976 B CN 104035976B
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satellite
data
ephemeris data
ephemeris
gps
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CN104035976A (en
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王新志
岳东杰
柯福阳
贾军辉
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南京信息工程大学
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Abstract

本发明公开了一种GPS卫星广播星历数据的存储与检索方法,将数据存储区分为星历数据和索引数据两个部分,根据卫星编号对GPS卫星广播星历数据进行存储。 The present invention discloses a method for storage and retrieval of GPS satellite broadcast ephemeris data, the data storage area is divided into two portions ephemeris data and the index data of the GPS satellites broadcast ephemeris data is stored according to the satellite number. 所述索引数据部分包括历元总数、CPS周数、星历位置信息,所述星历位置信息包括GPS周秒、星历数据存储位置。 The index data portion includes the total number of epochs, the CPS weeks, ephemeris location information, the location information includes GPS ephemeris circumferential seconds, ephemeris data storage location. 该GPS卫星广播星历数据的存储与检索方法在利用测站观测数据和卫星星历数据计算卫星坐标时,目标性强,检索效率高,能大幅提高计算效率。 When the method of storage and retrieval GPS satellite broadcast ephemeris data and satellite ephemeris data observation data is calculated using the coordinates of the satellite station, targeted, high retrieval efficiency, can significantly improve the computational efficiency.

Description

一种GPS卫星广播星历数据的存储与检索方法 Storage and retrieval using GPS satellites broadcast ephemeris data

技术领域 FIELD

[0001] 本发明涉及一种GPS卫星广播星历数据的存储与检索方法,属于卫星应用研究领域。 [0001] The present invention relates to a method for storage and retrieval of GPS satellite broadcast ephemeris data, the satellites belonging to the field of applied research.

背景技术 Background technique

[0002] GPS是英文Global Positioning System(全球定位系统)的简称,是利用GPS卫星,在全球范围内实时进行定位、导航的系统。 [0002] GPS is the English Global Positioning System (GPS) for short, is the use of GPS satellites for positioning in real time on a global scale, the navigation system. GPS进行定位、导航的原理是将GPS卫星在空间的坐标作为已知值,用户利用接收机测量某一点至卫星的距离,在观测到4颗或4颗以上卫星时,就可以根据GPS卫星的坐标利用后方交会算法计算出接收机的位置。 GPS positioning, the principles of navigation in the GPS satellite is a known value coordinate space, the user uses the receiver to measure the distance of a point of the satellite, when more than 4 is observed or four satellites, the GPS satellite can be the receiver calculates the position coordinates using the algorithm resection. 因此,已知卫星轨道坐标是GPS进行定位的前提条件。 Consequently, the known coordinates of the satellite orbit is a prerequisite for GPS positioning.

[0003] GPS广播星历是通过卫星发射的含有轨道信息的导航电文,用户接收到这些信号,经过解码便可以获得所需要的卫星星历。 [0003] GPS navigation message broadcast ephemeris containing orbit information transmitted by the satellite, the user receives these signals, it can be decoded to obtain the desired satellite ephemeris.

[0004] 卫星星历,又称为卫星轨道数据。 [0004] satellite ephemeris, also known as satellite orbit data. 以开普勒定律的6个轨道参数之间的数学关系确定飞行体的时间、坐标、方位、速度等各项参数,具有极高的精度。 Mathematical relation between Kepler's laws of six orbital parameters determining the time of flight of the body, the parameters of coordinates, direction, speed, etc., with very high precision.

[0005] 卫星星历能精确计算、预测、描绘、跟踪卫星、飞行体的时间、位置、速度等运行状〇 [0005] The satellite ephemeris accurately calculated, prediction, depicted in the satellite tracking, time of flight body, position, speed and other operating square shape

[0006] 通常的存储方法是以卫星编号和时间为线索进行排列。 [0006] The method is generally stored and time aligned satellite number as a clue.

[0007] 星历数据每2小时发布一次,全天共12组,每组又包含32颗卫星的星历数据。 [0007] The ephemeris data is published once every two hours, a day a total of 12 groups, and each group containing the ephemeris data of satellites 32. 目前,GPS卫星广播星历数据通常以时间为顺序进行存储。 Currently, GPS satellites broadcast ephemeris data is typically stored as a sequence of time. 根据某一卫星的观测数据计算其坐标时,需要经过2个检索步骤:一、根据卫星观测数据的时间匹配广播星历发布的时间;二、根据卫星的编号,提取该时段中相应的星历数据。 Calculating the coordinate data from the observation of a satellite search step to go through 2: a, based on the time matching satellite data broadcast ephemeris release time; two, according to the number of satellites, the extraction period corresponding ephemeris data. 这种数据存储和检索方式存在的问题是:每次匹配,目标不强,造成计算效率低下。 The problem with this way of data storage and retrieval problem: each match, the target is not strong, resulting in low efficiency calculation.

发明内容 SUMMARY

[0008] 本发明所要解决的技术问题是提供一种GPS卫星广播星历数据的存储与检索方法,解决利用测站观测数据和卫星星历数据进行匹配并计算卫星坐标,匹配目标不强,计算效率低下的问题。 [0008] The present invention solves the technical problem is to provide a GPS satellite broadcast ephemeris data storage and retrieval method, solution using station observation data and satellite ephemeris data matching and calculates the satellite coordinates, the matching target is not strong, is calculated inefficiencies.

[0009] 本发明为解决上述技术问题采用以下技术方案: [0009] The present invention employs the following technical solution to solve the above problems:

[0010] —方面,本发明提供一种GPS卫星广播星历数据的存储方法,首先将星历数据存储区划分为星历数据、索引数据两个部分,然后对星历数据进行检索统计后进行存储;所述索弓丨数据部分包括历元总数、CPS周数、星历位置信息,所述星历位置信息包括GPS周秒、星历数据存储位置。 [0010] - After aspect, the present invention provides a method for storing GPS satellite broadcast ephemeris data, first ephemeris data storage area is divided into two portions ephemeris data, index data, and ephemeris data for statistics retrieval storage; the data cable Shu bow portion includes the total number of epochs, the CPS weeks, ephemeris location information, the location information includes GPS ephemeris circumferential seconds, ephemeris data storage location.

[0011] —种GPS卫星广播星历数据的存储方法,具体实施步骤如下: [0011] - storing method species GPS satellites broadcast ephemeris data, specific implementation steps are as follows:

[0012] 步骤1,下载卫星广播星历数据,并将其转化为Rinex格式; [0012] Step 1, download satellite broadcast ephemeris data, and translate them into the format Rinex;

[0013] 步骤2,逐行读取Rinex格式的卫星广播星历数据,根据卫星编号,对卫星广播星历数据进行逐个检索,将卫星编号、时间参数、星历参数按卫星编号的顺序进行排列,存入星历数据部分;所述时间参数包括年、月、日、时、分、秒、GPS周秒; [0013] Step 2, the progressive format Rinex read satellite ephemeris data broadcast, according to the satellite number of the satellite broadcast ephemeris data retrieved one by one, to arrange the satellite number, a time parameter, by satellite ephemeris sequence number , stored ephemeris data portion; the time parameters include the year, month, day, hour, minute, second, GPS week seconds;

[0014] 步骤3,调用步骤2中存储的星历数据,根据卫星编号,统计每颗卫星星历数据的历元总数,存入索引数据部分中历元总数位置;统计每颗卫星星历数据的GPS周数,存入索引数据部分中GPS周数位置;统计每颗卫星星历数据的GPS周秒,存入索引数据部分中星历位置信息的历元周秒位置; [0014] Step 3, the step of calling the ephemeris data stored in the 2, according to the satellite number, then count the number of epochs each satellite ephemeris data, stored in the index data portion of the total number of positions epoch; statistics for each satellite ephemeris data the GPS week number, the index data stored in GPS week number location part; statistics for each satellite ephemeris data from the GPS circumferential seconds, the index data stored in the second circumferential portion epoch ephemeris position location information;

[0015] 步骤4,根据卫星编号,遍历该卫星星历数据的历元数,统计每颗卫星星历数据在星历数据部分的位置,存入索引数据部分中星历位置信息的星历数据存储位置。 [0015] Step 4. The satellite number, the number of cells that traversed epoch satellite ephemeris data, satellite ephemeris statistics for each position in the data portion of the ephemeris data, the index data stored ephemeris data in the position information portion ephemeris storage location.

[0016] 另一方面,本发明提供一种GPS卫星广播星历数据的检索方法,该方法是用于检索采用如权利要求1所述的存储方法进行存储的星历数据,包括以下具体步骤: [0016] another aspect, the present invention provides a method of retrieving GPS satellites broadcast ephemeris data, the method is employed for retrieving storage method as claimed in claim 1 for the stored ephemeris data, it comprises the following steps:

[0017] 步骤1,根据测站的观测数据,确定卫星编号; [0017] Step 1, the station according to the observation data, the satellite number determination;

[0018] 步骤2,根据卫星编号,查找该卫星索引数据的存储位置; [0018] Step 2. The satellite number, to find the storage location of the index data of the satellite;

[0019] 步骤3,从索引数据中提取星历数据的历元总数,逐个将历元时刻的GPS周秒和卫星的观测时刻进行作差; [0019] Step 3, the total number of epochs extract ephemeris data from the index data, one by one observation time of the GPS epoch, and the circumferential second difference for the satellite will be;

[0020] 步骤4,提取步骤3中作差后差值最小的GPS周秒所对应的星历数据存储位置; [0020] Step 4, after the step of extracting the difference between the minimum difference value corresponding to the second circumferential GPS ephemeris data storage location for 3;

[0021] 步骤5,根据步骤4中提取的星历数据存储位置,提取对应的星历数据部分的存储数据,完成星历数据的检索。 [0021] Step 5. The ephemeris data extracted from the storage location in step 4, extract data stored ephemeris data portion corresponding to the complete ephemeris data retrieval.

[0022] 本发明采用以上技术方案与现有技术相比,将数据存储区分为星历数据和索引数据两个部分,根据卫星编号对GPS卫星广播星历数据进行存储。 [0022] With the above aspect of the present invention compared with the prior art, the data storage area is divided into two portions ephemeris data and the index data of the GPS satellites broadcast ephemeris data is stored according to the satellite number. 该GPS卫星广播星历数据的存储与检索方法在利用测站观测数据和卫星星历数据计算卫星坐标时,目标性强,检索效率尚,能大幅提尚计算效率。 When the method of storage and retrieval of GPS satellites broadcast ephemeris data and satellite observations of satellite ephemeris data is calculated using the coordinates of the station, strong targets, retrieval efficiency yet can still provide substantial computational efficiency.

附图说明 BRIEF DESCRIPTION

[0023]图1是星历数据部分结构图。 [0023] FIG. 1 is a configuration diagram of part of the ephemeris data.

[0024]图2是索引数据部分结构图。 [0024] FIG. 2 is a configuration diagram of part of the index data.

[0025]图3是本发明中存储方法流程图。 [0025] FIG. 3 is a flowchart of a method of the present invention is stored.

[0026] 图4是本发明中检索方法流程图。 [0026] FIG 4 is a flowchart of a method of the present invention to retrieve.

具体实施方式 Detailed ways

[0027] 下面详细描述本发明的实施方式,所述实施方式的示例在附图中示出,其中自始至终相同或类似的标号表示相同或类似的元件或具有相同或类似功能的元件。 [0027] Embodiment of the present invention is described in detail below, by way of example in the embodiment illustrated in the accompanying drawings, wherein same or similar reference numerals designate the same or similar elements or elements having the same or similar functions. 下面通过参考附图描述的实施方式是示例性的,仅用于解释本发明,而不能解释为对本发明的限制。 By way of the following embodiments described with reference to the accompanying drawings are exemplary only for explaining the present invention and should not be construed as limiting the present invention. [0028] 本技术领域技术人员可以理解的是,除非特意声明,这里使用的单数形式“一”、“一个”、“所述”和“该”也可包括复数形式。 [0028] skilled in the art will be appreciated that, unless expressly stated, as used herein, the singular forms "a", "an", "the" and "the" include the plural form. 应该进一步理解的是,本发明的说明书中使用的措辞“包括”是指存在所述特征、整数、步骤、操作、元件和/或组件,但是并不排除存在或添加一个或多个其他特征、整数、步骤、操作、元件、组件和/或它们的组。 It should be further understood that the phraseology used in the present specification "comprises" means the presence of stated features, integers, steps, operations, elements, and / or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and / or groups thereof. 应该理解,当我们称元件被“连接”或“耦接”到另一元件时,它可以直接连接或耦接到其他元件,或者也可以存在中间元件。 It should be understood that when an element is referred to us "connected" or "coupled" to another element, it can be directly connected or coupled to the other element or intervening elements may also be present. 此外,这里使用的“连接”或“耦接”可以包括无线连接或耦接。 Further, as used herein, "connected" or "coupled" may include wirelessly connected or coupled. 这里使用的措辞“和/或”包括一个或更多个相关联的列出项的任一单元和全部组合。 As used herein, the phrase "and / or" includes one or more of the listed items associated with any and all combinations of a cell.

[0029] 本技术领域技术人员可以理解的是,除非另外定义,这里使用的所有术语(包括技术术语和科学术语)具有与本发明所属领域中的普通技术人员的一般理解相同的意义。 [0029] skilled in the art will be appreciated that, unless otherwise defined, all terms (including technical and scientific terms) have the general understanding in the art the present invention belongs to one of ordinary skill in the same meaning. 还应该理解的是,诸如通用字典中定义的那些术语应该被理解为具有与现有技术的上下文中的意义一致的意义,并且除非像这里一样定义,不会用理想化或过于正式的含义来解释。 It should also be understood that generic terms, such as those defined in the dictionary should be understood as meaning that is consistent with significance in the context of the prior art, and unless the same as defined here, not idealized or overly formal sense Explanation.

[0030] 下面结合附图对本发明的技术方案做进一步的详细说明: [0030] The following detailed description of the drawings further aspect of the present invention in combination:

[0031] 一方面,本发明设计一种GPS卫星广播星历数据的存储方法,首先将星历数据存储区划分为星历数据、索引数据两个部分,然后对星历数据进行检索统计后进行存储;所述索弓丨数据部分包括历元总数、CPS周数、星历位置信息,所述星历位置信息包括GPS周秒、星历数据存储位置,用于按卫星编号顺序存储。 After [0031] In one aspect, the storage method of the present invention to design a GPS satellite broadcast ephemeris data, the first ephemeris data storage area is divided into two portions ephemeris data, index data, and ephemeris data for statistics retrieval storage; the data cable Shu bow portion includes the total number of epochs, the CPS weeks, ephemeris location information, the location information includes GPS ephemeris circumferential seconds, ephemeris data storage location, by satellite number for sequentially stored.

[0032] 如图1所示的星历数据部分结构图,其中32表示星历数据的数量,按照卫星编号进行顺序存储。 [0032] FIG ephemeris data is part of the structure shown in Figure 1, wherein the number 32 represents the ephemeris data, stored sequentially according to the satellite number. 各数据位置中分别存储卫星编号、时间参数、星历参数,时间参数包括年、月、日、时、分、秒、GPS周秒。 Each position data are stored in the satellite number, time parameters, the ephemeris parameters, including time parameters year, month, day, hour, minute, second, GPS week seconds.

[0033]如图2所示的索引数据部分结构图,其中PRN表示卫星编号。 [0033] FIG index data structure section shown in Figure 2, which represents the satellite PRN number. 索引数据部分包括历元总数、GPS周数、星历位置信息,所述星历位置信息包括GPS周秒、星历数据存储位置。 Index data portion includes the total number of epochs, GPS week number, the ephemeris location information, the location information includes GPS ephemeris circumferential seconds, ephemeris data storage location.

[0034] 本发明中一种GPS卫星广播星历数据的存储方法,如图3所示,具体实施步骤如下:[0035] 步骤1,下载卫星广播星历数据,并将其转化为Rinex格式; [0034] The method of the present invention, the storage of one GPS satellite broadcast ephemeris data, as shown, the specific steps are as follows Example 3: [0035] Step 1, download satellite broadcast ephemeris data, and translate them into the format Rinex;

[0036] 步骤2,逐行读取Rinex格式的卫星广播星历数据,根据卫星编号,对卫星广播星历数据进行逐个检索,将卫星编号、时间参数、星历参数按卫星编号的顺序进行排列,存入星历数据部分;所述时间参数包括年、月、日、时、分、秒、GPS周秒; [0036] Step 2, the progressive format Rinex read satellite ephemeris data broadcast, according to the satellite number of the satellite broadcast ephemeris data retrieved one by one, to arrange the satellite number, a time parameter, by satellite ephemeris sequence number , stored ephemeris data portion; the time parameters include the year, month, day, hour, minute, second, GPS week seconds;

[0037] 步骤3,调用步骤2中存储的星历数据,根据卫星编号,统计每颗卫星星历数据的历元总数,存入索引数据部分中历元总数位置;统计每颗卫星星历数据的GPS周数,存入索引数据部分中GPS周数位置;统计每颗卫星星历数据的GPS周秒,存入索引数据部分中星历位置信息的历元周秒位置; [0037] Step 3, the step of calling the ephemeris data stored in the 2, according to the satellite number, then count the number of epochs each satellite ephemeris data, stored in the index data portion of the total number of positions epoch; statistics for each satellite ephemeris data the GPS week number, the index data stored in GPS week number location part; statistics for each satellite ephemeris data from the GPS circumferential seconds, the index data stored in the second circumferential portion epoch ephemeris position location information;

[0038] 步骤4,根据卫星编号,遍历该卫星星历数据的历元数,统计每颗卫星星历数据在星历数据部分的位置,存入索引数据部分中星历位置信息的星历数据存储位置。 [0038] Step 4. The satellite number, the number of cells that traversed epoch satellite ephemeris data, satellite ephemeris statistics for each position in the data portion of the ephemeris data, the index data stored ephemeris data in the position information portion ephemeris storage location.

[0039]另一方面,本发明设计一种GPS卫星广播星历数据的检索方法,如图4所示,该方法是用于检索采用如权利要求1所述的存储方法进行存储的星历数据,包括以下具体步骤: [0039] On the other hand, to design a GPS satellite searching method according to the present invention, the broadcast ephemeris data, shown in Figure 4, the process is employed for retrieving ephemeris data storage method according to claim 1 for storing , comprises the following steps:

[0040] 步骤1,根据测站的观测数据,确定卫星编号; [0040] Step 1, the station according to the observation data, the satellite number determination;

[0041] 步骤2,根据卫星编号,查找该卫星索引数据的存储位置; [0041] Step 2. The satellite number, to find the storage location of the index data of the satellite;

[0042] 步骤3,从索引数据中提取星历数据的历元总数,逐个将历元时刻的GPS周秒和卫星的观测时刻进行作差; [0042] Step 3, the total number of epochs extract ephemeris data from the index data, one by one observation time of the GPS epoch, and the circumferential second difference for the satellite will be;

[0043] 步骤4,提取步骤3中作差后差值最小的GPS周秒所对应的星历数据存储位置; [0043] Step 4, after the step of extracting the difference between the minimum difference value corresponding to the second circumferential GPS ephemeris data storage location for 3;

[0044] 步骤5,根据步骤4中提取的星历数据存储位置,提取对应的星历数据部分的存储数据,完成星历数据的检索。 [0044] Step 5. The ephemeris data extracted from the storage location in step 4, extract data stored ephemeris data portion corresponding to the complete ephemeris data retrieval.

[0045]以上所述,仅为本发明中的具体实施方式,但本发明的保护范围并不局限于此,任何熟悉该技术的人在本发明所揭露的技术范围内,可理解想到的变换或替换,都应涵盖在本发明的包含范围之内,因此,本发明的保护范围应该以权利要求书的保护范围为准。 [0045] The above are only specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art within the technical scope disclosed by the present invention, it is understood contemplated transform or alternatively, shall fall within the scope of the present invention comprises, therefore, the scope of the present invention should be protected by the scope of the claims and their equivalents.

Claims (1)

1. 一种GPS卫星广播星历数据的检索方法,其特征在于,采用该检索方法进行检索的星历数据通过如下存储方法进行存储,该存储方法首先将星历数据存储区划分为星历数据、索引数据两个部分,然后对星历数据进行检索统计后进行存储,其中,所述索引数据部分包括历元总数、GPS周数、星历位置信息,所述星历位置信息包括GPS周秒、星历数据存储位置;具体实施步骤如下: 步骤A,下载卫星广播星历数据,并将其转化为Rinex格式; 步骤B,逐行读取Rinex格式的卫星广播星历数据,根据卫星编号,对卫星广播星历数据进行逐个检索,将卫星编号、时间参数、星历参数按卫星编号的顺序进行排列,存入星历数据部分;其中,所述时间参数包括年、月、日、时、分、秒、GPS周秒; 步骤C,调用步骤B中存储的星历数据,根据卫星编号,统计每颗卫星星历数据的 A method of retrieving GPS satellite broadcast ephemeris data, wherein the retrieval method using ephemeris data retrieved by the storage method is stored, the first storage method ephemeris data storage area into the ephemeris data , two index data portion, then the ephemeris data stored statistics retrieval, wherein the index data portion includes the total number of epochs, GPS week number, the ephemeris location information, the location information includes GPS ephemeris circumferential seconds , ephemeris data storage location; specific embodiment the following steps: step a, download satellite broadcast ephemeris data, and translate them into the format Rinex; procedure B, read line by line format Rinex satellite broadcast ephemeris data, in accordance with the satellite number, broadcasting satellite ephemeris data is retrieved one by one, the satellite number, a time parameter, satellite ephemeris data by arranging the order number, stored ephemeris data portion; wherein said parameter includes time, month, day, hour, minutes, seconds, GPS circumferential seconds; step C, and ephemeris data calls stored in step B, each satellite number from the satellite ephemeris data, statistics 元总数,存入索引数据部分中历元总数位置;统计每颗卫星星历数据的GPS周数,存入索引数据部分中GPS周数位置;统计每颗卫星星历数据的GPS周秒,存入索引数据部分中星历位置信息的历元周秒位置; 步骤D,根据卫星编号,遍历该卫星星历数据的历元数,统计每颗卫星星历数据在星历数据部分的位置,存入索引数据部分中星历位置信息的星历数据存储位置; 该检索方法包括以下具体步骤: 步骤1,根据测站的观测数据,确定卫星编号; 步骤2,根据卫星编号,查找该卫星索引数据的存储位置; 步骤3,从索引数据中提取星历数据的历元总数,逐个将历元时刻的GPS周秒和卫星的观测时刻进行作差; 步骤4,提取步骤3中作差后差值最小的GPS周秒所对应的星历数据存储位置; 步骤5,根据步骤4中提取的星历数据存储位置,提取对应的星历数据部分的存储数据 The numbers of total, total number of parts stored in the epoch location index data; weeks statistics for each GPS satellite ephemeris data, GPS week number is stored in the index position of the data portion; statistics for each satellite ephemeris data from the GPS circumferential seconds, deposit the index data portion epoch circumferential second position ephemeris position information; Procedure D, according to the satellite number, traversing epoch number of symbols of the satellite ephemeris data, statistical position of each satellite ephemeris data in the ephemeris data portion, deposit indexing data ephemeris data storage locations ephemeris position information portion; the retrieval method comprises the following steps: step 1, according to the observation data stations, determining satellite number; step 2, according to the satellite number, find the satellite index data storage location; 3, the total number of steps to extract ephemeris data from index data epochs, one by one observation time GPS epoch circumferential second satellite is performed for a difference; step 4, step 3 to extract the difference as the difference between second minimum circumference corresponding GPS ephemeris data storage locations; step 5 the ephemeris data extracted from the storage location in step 4, extract data stored ephemeris data portion corresponding to the 完成星历数据的检索。 Finish Search ephemeris data.
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