CN201266086Y

CN201266086Y - GPS compass

Info

Publication number: CN201266086Y
Application number: CNU2008201102197U
Authority: CN
Inventors: 范君晔; 陈亮; 贺宏宇
Original assignee: Beijing Sdi Tech Development Co Ltd
Current assignee: Beijing SDi Science & Technology Co., Ltd.
Priority date: 2008-08-26
Filing date: 2008-08-26
Publication date: 2009-07-01
Anticipated expiration: 2018-08-26

Abstract

The utility model discloses a GPS compass which comprises a shell, a GPS receiving system and a power supply module which are arranged in the shell, wherein the GPS receiving system is composed of a main GPS receiver, an auxiliary GPS receiver and a processor, the main GPS receiver and the auxiliary GPS receiver are respectively connected with a GPS antenna used for obtaining GPS carrier phase signals of a carrier, the processor is used for resolving the state of the carrier, and the power supply module is used for providing a power supply needed by the GPS receiving system. Because of resolving the state of the carrier by using the GPS carrier phase signals, the utility model has the characteristics of global beam, 24-hour service, high accuracy, multiple functions, and the like.

Description

The GPS compass

Technical field

The utility model is about GPS hi-Fix, direction finding technology, is specifically related to a kind of GPS compass.

Background technology

The men of old relies on the sun daytime and relies on the position of fixed star to determine direction at night, is called celestial navigation.But celestial navigation is subjected to weather effect very big, has invented compass afterwards.Compass then is not subjected to weather effect, so obtain important application in navigation.Modern times, compass also in constantly development forward, polytype compass occurred.The function of existing platform compass system is, the attitude angle and the course information of carrier is provided, and as aircraft, naval vessel and vehicle need all at the volley to know that attitude angle information, aircraft need know three-dimensional attitude information; And naval vessel and vehicle move in the plane, then only need the attitude information of two dimension, just course angle.The current majority navigational system is all using electronic compass to come direction indication.Electronic compass relies on the magnetic field of the earth, and generally about 1 degree, some senior compass degree of accuracy can be higher than 0.1 degree to its angular accuracy.But the shortcoming of electronic compass is to be subjected to easily the interference of electromagnetic field, can't obtain using in a lot of occasions, for example is subjected to the influence of the fuselage or the hull iron compound of aircraft; The aspect also can very large deviation occur because north geographic pole follows the difference of magnetic north at the two poles of the earth in addition.

Along with the development of technology, gyrostatic use also more and more widely owing to independently provide 3 d pose information, so, have a wide range of applications in space flight and the some other field in aviation.Gyroscope has the high superperformance of precision, can guarantee that carrier also can provide attitude information accurately under abominable dynamic environment.Gyroscope does not rely on the information in any external world and measures navigation information, therefore is not subjected to natural or artificial interference, has good disguise.But gyrostatic major defect is that navigation error accumulates in time, and the back produces unallowable accumulated error working long hours.

The utility model content

The utility model has overcome the deficiencies in the prior art, and a kind of GPS compass that high-precision location and navigation information are provided is provided.

The technical solution of the utility model is:

A kind of GPS compass, comprise a housing, it is characterized in that, an one GPS receiving system and a power module are set in housing, and described GPS receiving system is made up of from a GPS receiver and a processor a main GPS receiver,, described main GPS receiver be connected a gps antenna respectively from the GPS receiver, be used to obtain the gps carrier phase signal of carrier, described processor is used to resolve the attitude of carrier, and described power module is used to the GPS receiving system that required power supply is provided.

Described processor can be the DSP digital processing unit.

Described processor can connect several LED light, and described pilot lamp provides location, difference and course lock state information respectively.

Described processor can connect several parallel serial ports.

Described processor can connect a storer, and this storer is used for the data of GPS receiving system are gathered and stored.

Described power module can comprise a power transfer module and a battery.

The inside surface of described housing can be provided with electromagnetic screen equipment.

Described housing can be the box of a sealing.

Compared with prior art, the beneficial effects of the utility model are:

1, the whole world covers: gps system has 24 satellites to be evenly distributed on six near-circular orbits of 22000KM overhead, form satellite network simultaneously covering the whole world, 6-11 satellite can be seen at least simultaneously in any position on earth, and the GPS compass can use in any region in the whole world like this.

2, round-the-clock: the GPS compass utilizes the radiowave of the satellite attitude measurement that navigates, the influence that this radiowave is not subjected to meteorological condition and changes round the clock, though can produce corresponding delay when radiowave passes through ionosphere and troposphere, can eliminate these errors at the two difference algorithms of GPS compass utilization.Gps signal also can bring certain influence to signal trace because of blocking of pile, dense forest, jumps phenomenon (as the blackout of short time) and can solve by the cycle slip reparation if Xiao Zhou occurs.

3, high precision: when the GPS compass utilizes carrier phase to resolve, as long as accurately calculate initial integer ambiguity, its precision can reach centimetre-sized in theory so, and simultaneously two difference algorithms have been eliminated most of error term, thereby guarantee the high precision of dead reckoning fully.

4, multi-usage: be used in the attitude navigational system of all kinds of the army and the people's carrier in land, sea and air, especially on aircraft and naval vessels, in the vehicle attitude location, also bring into use simultaneously.

Description of drawings

Fig. 1 is the utility model structural representation;

Fig. 2 is the processing flow chart of the utility model processor.

Embodiment

Below in conjunction with the drawings and specific embodiments the utility model is described in further detail:

The utility model has a housing (box), a main GPS receiver, is set from a GPS receiver and a processor in box, and the power module that is used to power, as shown in Figure 1.Main GPS receiver be connected a gps antenna respectively from the GPS receiver, be used to obtain the gps carrier phase signal of carrier, processor comes calculating location with the phase center of main gps antenna as reference point.The phase center of main gps antenna just can be determined two attitude angle of carrier with respect to local Department of Geography by this baseline: the position angle and the angle of pitch to being called baseline from the line between the phase center of gps antenna.

With reference to figure 2, implementation process of the present utility model is as follows:

1.GPS antenna receives the signal that gps satellite is broadcast;

2. main GPS receiver and accept signal from gps antenna from the GPS receiver amplifies through intermediate frequency, and filtering and signal Processing realize tracking, locking, measurement to signal.Obtain broadcast message and obtain the pseudorange locating information by the decoding of track loop reconstructed carrier., the code delay locking ring aligns this machine pseudo-random code with the satellite pseudo-random code that receives, realize tracking, identification and the pseudo range measurement of satellite; The carrier phase locking ring will duplicate carrier phase and the satellite carrier phase locking that receives, and carry out carrier phase measurement, in the hope of surveying the phase pseudorange;

3, processor utilizes main GPS receiver and determines attitude of carrier from the carrier phase signal of GPS receiver.

The utility model can carry out serial ports expansion, and equipment has three independent serial ports, and the data after resolving can be used for a plurality of host computers, and each host computer can obtain the data of different statement or different-format, convenient user's use as required.

The utility model can be provided with several LED light, and status informations such as location, difference and course locking are provided, and understands GPS compass current working state more easily in real time.

In order to satisfy client's demand, the utility model has also taken into full account electromagnetic interference (EMI), is provided with electromagnetic barrier equipment at the inside surface of housing, has superpower antijamming capability, makes this GSP compass can operate as normal under stronger electromagnetic environment.

And housing seal is handled, and it is effective to be isolated from the outside, and the utility model still can operate as normal under the dust storm condition, has good dust-proof, satisfies multi-field multiduty demand and uses.

More than by specific embodiment GPS compass provided by the utility model has been described, it will be understood by those of skill in the art that in the scope that does not break away from the invention essence, can make certain deformation or modification to the utility model.

Claims

1, a kind of GPS compass, comprise a housing, it is characterized in that, an one GPS receiving system and a power module are set in housing, and described GPS receiving system is made up of from a GPS receiver and a processor a main GPS receiver,, described main GPS receiver be connected a gps antenna respectively from the GPS receiver, be used to obtain the gps carrier phase signal of carrier, described processor is used to resolve the attitude of carrier, and described power module is used to the GPS receiving system that required power supply is provided.

2, GPS compass as claimed in claim 1 is characterized in that, described processor is the DSP digital processing unit.

3, GPS compass as claimed in claim 1 or 2 is characterized in that, described processor connects several LED light.

4, GPS compass as claimed in claim 1 or 2 is characterized in that, described processor connects a storer, and this storer is used for the data of GPS receiving system are gathered and stored.

5, GPS compass as claimed in claim 1 is characterized in that, described processor connects several parallel serial ports.

6, GPS compass as claimed in claim 1 is characterized in that, described power module comprises a power transfer module and a battery.

7, GPS compass as claimed in claim 1 is characterized in that, the inside surface of described housing is provided with electromagnetic screen equipment.

As claim 1 or 7 described GPS compass, it is characterized in that 8, described housing is the box of a sealing.