CN106330198A - Ship position information compression and reduction method - Google Patents
Ship position information compression and reduction method Download PDFInfo
- Publication number
- CN106330198A CN106330198A CN201610732136.0A CN201610732136A CN106330198A CN 106330198 A CN106330198 A CN 106330198A CN 201610732136 A CN201610732136 A CN 201610732136A CN 106330198 A CN106330198 A CN 106330198A
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- China
- Prior art keywords
- position information
- pos
- compression
- client
- num
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Classifications
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
- H03M7/00—Conversion of a code where information is represented by a given sequence or number of digits to a code where the same, similar or subset of information is represented by a different sequence or number of digits
- H03M7/30—Compression; Expansion; Suppression of unnecessary data, e.g. redundancy reduction
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S19/00—Satellite radio beacon positioning systems; Determining position, velocity or attitude using signals transmitted by such systems
- G01S19/38—Determining a navigation solution using signals transmitted by a satellite radio beacon positioning system
- G01S19/39—Determining a navigation solution using signals transmitted by a satellite radio beacon positioning system the satellite radio beacon positioning system transmitting time-stamped messages, e.g. GPS [Global Positioning System], GLONASS [Global Orbiting Navigation Satellite System] or GALILEO
- G01S19/42—Determining position
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- Engineering & Computer Science (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Computer Networks & Wireless Communication (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Information Transfer Between Computers (AREA)
Abstract
The invention discloses a ship position information compression and reduction method, mainly comprising the following steps: creating indexes for all ship position information sets POS[ALL] through 10 time stamps under UTC/GMT+8:00 time zones; implementing initial definition on all ship position information sets to form a defined ship position information set POS[B-E] according to searched time periods; compressing POS[B-E] to form a compressed ship position information set POS[B-E][NUM] according to the setting of handling capacity of a client; ensuring that the client displays POS[B-E][NUM] or implements other data operations on POS[B-E][NUM]; ensuring that the client implements reduction operations on existing POS[B-E][NUM] to obtain POS[B-E]; and stopping compression operations if the client no longer needs ship position information or the obtained ship position information is the most fine-grained ship position information. Thereby, the defects that data cannot be reduced due to the compression aiming at a 'situation' graph mode in the prior art, and relatively high requirements for hardware performance are needed can be solved; and meanwhile, the problem of performance bottlenecks caused by a relatively large data volume in a process of acquiring and displaying the ship position information by the client can be solved.
Description
Technical field
The present invention relates to position information processing technology field, in particular it relates to a kind of position information compression and method of reducing.
Background technology
Field of information processing on the berth, existing AIS compression algorithm, GPS compression method, for the mode of " situation " figure
It is compressed；Its shortcoming: data cannot be reduced, higher to hardware performance requirements；At common AIS trace playback, GPS history is returned
The scene such as tracing back, client needs to be shown position information, and each request data quantity is huge, and can be with it
His data manipulation, such as: sequence, data format conversion etc., have serious performance bottleneck.
Summary of the invention
It is an object of the invention to, for the problems referred to above, propose a kind of position information compression and method of reducing, to solve visitor
When family end obtains and shows position information, the advantage of the performance bottleneck that factor data amount causes relatively greatly.
For achieving the above object, the technical solution used in the present invention is: a kind of position information compression and method of reducing, mainly
Including:
Step 1: by the timestamp under 10 UTC/GMT+8:00 time zones, set up rope for all position informations set POS [ALL]
Draw；
Step 2: according to the time period of inquiry, define the information aggregate at all accommodations for the first time, forms the accommodation after defining
Information aggregate POS [B-E]；
Step 3: set according to the treating capacity of client, POS [B-E] is compressed, form the position information set after compression
POS[B-E][NUM]；
Step 4: POS [B-E] [NUM] is shown or other data manipulations by client；
Step 5: client carries out restoring operation to POS [B-E] [NUM] and obtains POS [B-E]；
Step 6: if client is no longer necessary to position information or obtained position information is the most fine-grained position information, the most no longer enter
Row compression, otherwise proceeds compression to position information according to the treating capacity of client.
Further, described step 3 also includes, if also needing position information set POS [B-E] [NUM] after compression
Be compressed, then that continues the treating capacity according to client is set for compression.
Further, described position information includes that ship indicates.
Further, in step 4, other data manipulations described include sequence and format conversion.
A kind of position information compression of various embodiments of the present invention and method of reducing, owing to specifically including that by 10 UTF-8
Timestamp under time zone, sets up index for all position informations set POS [ALL]；According to the time period of inquiry, to all accommodations
Information aggregate define for the first time, formed define after position information set POS [B-E]；Treating capacity according to client sets
Fixed, POS [B-E] is compressed, forms position information set POS [B-E] [NUM] after compression；Client is to POS [B-E]
[NUM] carries out showing or other data manipulations；Client carries out restoring operation to existing POS [B-E] [NUM] and obtains POS [B-
E]；If client is no longer necessary to position information or obtained position information is the most fine-grained position information, the most no longer it is compressed；
Such that it is able to overcome in prior art the mode for " situation " figure to be compressed, data cannot be reduced, and hardware performance
Seek higher defect；When overcoming client obtain and show position information, the property that data volume causes relatively greatly can be solved simultaneously
Can bottleneck problem.
Other features and advantages of the present invention will illustrate in the following description, and, partly become from description
Obtain it is clear that or understand by implementing the present invention.
Below by drawings and Examples, technical scheme is described in further detail.
Accompanying drawing explanation
Accompanying drawing is for providing a further understanding of the present invention, and constitutes a part for description, with the reality of the present invention
Execute example together for explaining the present invention, be not intended that limitation of the present invention.In the accompanying drawings:
Fig. 1 is the principle flow chart of a kind of position information compression described in the specific embodiment of the invention and method of reducing.
Detailed description of the invention
Below in conjunction with accompanying drawing, the preferred embodiments of the present invention are illustrated, it will be appreciated that preferred reality described herein
Execute example be merely to illustrate and explain the present invention, be not intended to limit the present invention.
Specifically, a kind of position information compression and method of reducing, specifically include that
Step 1: by the timestamp under 10 UTC/GMT+8:00 time zones, set up rope for all position informations set POS [ALL]
Draw；
Step 2: according to the time period of inquiry, define the information aggregate at all accommodations for the first time, forms the accommodation after defining
Information aggregate POS [B-E]；
Step 3: set according to the treating capacity of client, POS [B-E] is compressed, form the position information set after compression
POS[B-E][NUM]；
Step 4: POS [B-E] [NUM] is shown or other data manipulations by client；
Step 5: client carries out restoring operation to existing POS [B-E] [NUM] and obtains POS [B-E]；
Step 6: if client is no longer necessary to position information or obtained position information is the most fine-grained position information, the most no longer enter
Row compression, otherwise proceeds compression to position information according to the treating capacity of client.
Described step 3 also includes, if also needing position information set POS [B-E] [NUM] after compression is compressed,
That then continues the treating capacity according to client is set for compression.
Described position information includes that ship indicates.
In step 4, other data manipulations described include sequence and format conversion.
In conjunction with Fig. 1, position information comprises: unique sign of this ship；
1. by the timestamp in 10 UTC/GMT+8:00 time zones, for all position information set (hereinafter referred to as POS
[ALL]) set up index；
2. according to the time period of inquiry, defining POS [ALL] for the first time, now position information collection is combined into POS [B-E]；
3. set according to the treating capacity of client, POS [B-E] is compressed into POS [B-E] [NUM];
4. POS [B-E] [NUM] is shown or other data manipulations by client；
5. client carries out restoring operation to existing POS [B-E] [NUM];
Obtain position information border (POS [BOUND]), obtain the position information after reduction by POS [BOUND]；
6. client is no longer necessary to position information or has been the most fine-grained position information at present, will not recompress；
At least can reach following beneficial effect:
Finally it is noted that the foregoing is only the preferred embodiments of the present invention, it is not limited to the present invention, although
Being described in detail the present invention with reference to previous embodiment, for a person skilled in the art, it still can be right
Technical scheme described in foregoing embodiments is modified, or wherein portion of techniques feature is carried out equivalent.All
Within the spirit and principles in the present invention, any modification, equivalent substitution and improvement etc. made, should be included in the protection of the present invention
Within the scope of.
Claims (5)
1. a position information compression and method of reducing, it is characterised in that comprise the following steps:
Step 1: by the timestamp under 10 UTC/GMT+8:00 time zones, set up rope for all position informations set POS [ALL]
Draw；
Step 2: according to the time period of inquiry, define the information aggregate at all accommodations for the first time, forms the accommodation after defining
Information aggregate POS [B-E]；
Step 3: set according to the treating capacity of client, POS [B-E] is compressed, form the position information set after compression
POS[B-E][NUM]；
Step 4: POS [B-E] [NUM] is shown or other data manipulations by client；
Step 5: client carries out restoring operation to POS [B-E] [NUM], the position information after being reduced；
Step 6: if client is no longer necessary to position information or obtained position information is the most fine-grained position information, the most no longer enter
Row compression, otherwise proceeds compression to position information according to the treating capacity of client.
A kind of position information compression the most according to claim 1 and method of reducing, it is characterised in that in described step 3 also
Including, if also needing position information set POS [B-E] [NUM] after compression is compressed, then continue the process according to client
That measures is set for compression.
A kind of position information compression the most according to claim 2 and method of reducing, it is characterised in that described step 5 is concrete
For, obtain position information border (POS [BOUND]), obtain the position information after reduction by POS [BOUND].
A kind of position information compression the most according to claim 3 and method of reducing, it is characterised in that described position information bag
Include ship uniquely to indicate.
A kind of position information compression the most according to claim 1 and method of reducing, it is characterised in that in step 4, described its
His data manipulation includes sequence and format conversion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610732136.0A CN106330198A (en) | 2016-08-26 | 2016-08-26 | Ship position information compression and reduction method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610732136.0A CN106330198A (en) | 2016-08-26 | 2016-08-26 | Ship position information compression and reduction method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106330198A true CN106330198A (en) | 2017-01-11 |
Family
ID=57791643
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610732136.0A Pending CN106330198A (en) | 2016-08-26 | 2016-08-26 | Ship position information compression and reduction method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106330198A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102646130A (en) * | 2012-03-12 | 2012-08-22 | 华中科技大学 | Method for storing and indexing mass historical data |
| CN103065503A (en) * | 2012-12-27 | 2013-04-24 | 重庆大学 | Reappearing method and system controlling river reach ship traveling dynamic and signal revealing process |
| WO2013057174A1 (en) * | 2011-10-20 | 2013-04-25 | Deutsche Post Ag | Comparing positional data |
| CN103914449A (en) * | 2012-12-29 | 2014-07-09 | 上海可鲁系统软件有限公司 | Multisource time series data compression storage method |
-
2016
- 2016-08-26 CN CN201610732136.0A patent/CN106330198A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013057174A1 (en) * | 2011-10-20 | 2013-04-25 | Deutsche Post Ag | Comparing positional data |
| CN102646130A (en) * | 2012-03-12 | 2012-08-22 | 华中科技大学 | Method for storing and indexing mass historical data |
| CN103065503A (en) * | 2012-12-27 | 2013-04-24 | 重庆大学 | Reappearing method and system controlling river reach ship traveling dynamic and signal revealing process |
| CN103914449A (en) * | 2012-12-29 | 2014-07-09 | 上海可鲁系统软件有限公司 | Multisource time series data compression storage method |
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Application publication date: 20170111 |