JPH1164478A - Dgps receiver - Google Patents

Dgps receiver

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Publication number
JPH1164478A
JPH1164478A JP23784197A JP23784197A JPH1164478A JP H1164478 A JPH1164478 A JP H1164478A JP 23784197 A JP23784197 A JP 23784197A JP 23784197 A JP23784197 A JP 23784197A JP H1164478 A JPH1164478 A JP H1164478A
Authority
JP
Japan
Prior art keywords
information
reference station
satellite
elevation angle
gps
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP23784197A
Other languages
Japanese (ja)
Other versions
JP3708689B2 (en
Inventor
Mikio Nakamura
幹男 中村
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Japan Radio Co Ltd
Original Assignee
Japan Radio Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Japan Radio Co Ltd filed Critical Japan Radio Co Ltd
Priority to JP23784197A priority Critical patent/JP3708689B2/en
Publication of JPH1164478A publication Critical patent/JPH1164478A/en
Application granted granted Critical
Publication of JP3708689B2 publication Critical patent/JP3708689B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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  • Position Fixing By Use Of Radio Waves (AREA)

Abstract

PROBLEM TO BE SOLVED: To adjust a reference station with a satellite which a user selects and increase the number of satellite capable of differential correction by calculating the elevation angle of each satellite from the reference of the reference station position and selecting the satellite for receiving in the sequence of larger elevation angle. SOLUTION: With a differential GPS receiver, a beacon station selection part 109, for example, obtains information of user position from a position calculator 105 and the like, in which broadcasting is received with a beacon receiver 107, and GPS correction data is output to a correction information output part 110 and the position information of the reference station is output to a reference station position memory 111. A satellite selection part 104 calculates the elevation angle of each satellite form the position of the reference station, selects a predetermined number of satellite in the sequence of larger elevation angle and inputs the satellite number to a GPS receiver 101. The GPS receiver 101 receives the wave from those satellite and user position and the like are calculated in the position calculator 105 by using the correction quantity calculated in the correction information output part 110. Further a constitution by interference positioning is also possible.

Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION

【0001】[0001]

【発明の属する技術分野】本発明はDGPS受信機に関
し、特に受信機側で電波を受信する衛星の選択に関す
る。
[0001] 1. Field of the Invention [0002] The present invention relates to a DGPS receiver, and more particularly to the selection of a satellite for receiving radio waves on the receiver side.

【0002】[0002]

【従来の技術】GPS(Global Positioning System)
は、米国が運用する衛星航法システムであり、このシス
テムを利用して測位情報を得るGPS受信機、および基
準局からのGPS補正データを得て高精度な測位を行う
D(differential)GPS受信機については良く知られて
いる。本発明はDGPS受信機一般に適用できる技術で
あるが、以下、ビーコン(beacon)DGPSシステムを用
いて説明する。
2. Description of the Related Art GPS (Global Positioning System)
Is a satellite navigation system operated by the United States. This system uses a GPS receiver that obtains positioning information using this system, and a D (differential) GPS receiver that obtains GPS correction data from a reference station and performs high-accuracy positioning. Is well known. The present invention is a technology applicable to DGPS receivers in general, and will be described below using a beacon DGPS system.

【0003】ビーコンDGPSシステムは、その位置が
予め正確に解っている既知の基準局でGPS衛星からの
電波を受信し、この電波で測定される擬似距離情報と既
知の位置から求めた距離情報から測定値に含まれる誤差
情報を求め、この誤差情報をGPS補正データとして複
数のビーコン放送局へ回線(一般的には有線回線)を通
じて送信し、各ビーコン放送局で無線により放送する。
なお、ビーコン放送局で無線により放送される内容は、
RTCM SC−104のデータフォーマットを使用し
て、上述のGPS補正データの他に、例えば基準局の位
置情報やGPS衛星の動作状態、その他のメッセージが
含まれる。またビーコンDGPS受信機にはビーコン放
送局からの電波を受信するビーコン受信部が設けられて
おり、従ってビーコンDGPS受信機では近くのビーコ
ン放送局からGPS補正データを入力して、自身のGP
S受信部で測位に使用される擬似距離情報を補正して正
確な位置情報を出力することができる。
A beacon DGPS system receives a radio wave from a GPS satellite at a known reference station whose position is known in advance and measures the distance from pseudorange information measured by the radio wave and distance information obtained from the known position. Error information included in the value is obtained, and this error information is transmitted as GPS correction data to a plurality of beacon broadcasting stations via a line (generally, a wired line), and each beacon broadcasting station broadcasts it wirelessly.
In addition, the contents broadcasted wirelessly by the beacon broadcasting station are as follows:
Using the data format of the RTCM SC-104, in addition to the above-described GPS correction data, for example, the position information of the reference station, the operation state of the GPS satellite, and other messages are included. The beacon DGPS receiver is provided with a beacon receiver for receiving radio waves from the beacon broadcasting station. Therefore, the beacon DGPS receiver inputs GPS correction data from a nearby beacon broadcasting station and receives its own GP.
The S receiving unit can correct the pseudo distance information used for positioning and output accurate position information.

【0004】図2は、従来のこの種のビーコンDGPS
受信機の構成の一例を示すブロック図である。図2にお
いて、200はGPS受信用アンテナ、201はGPS
受信部、202はGPSアルマナック(almanac) メモ
リ、203はリアルタイムクロック、204は衛星選択
部、205は測位計算部、206はビーコン受信用アン
テナ、207はビーコン受信部、208はビーコン局情
報メモリ、209はビーコン局選択部、210は補正情
報出力部、212は入力部、213は表示部を示す。
FIG. 2 shows a conventional beacon DGPS of this type.
It is a block diagram which shows an example of a structure of a receiver. In FIG. 2, reference numeral 200 denotes a GPS receiving antenna, and 201 denotes a GPS antenna.
A receiving unit, 202 is a GPS almanac (almanac) memory, 203 is a real-time clock, 204 is a satellite selecting unit, 205 is a positioning calculating unit, 206 is a beacon receiving antenna, 207 is a beacon receiving unit, 208 is a beacon station information memory, 209 Denotes a beacon station selection unit, 210 denotes a correction information output unit, 212 denotes an input unit, and 213 denotes a display unit.

【0005】ビーコン局情報メモリ208には、ビーコ
ン放送局から放送された局アルマナックデータが記憶さ
れており、ビーコン局選択部209では測位計算部20
5或は入力部212からのユーザ位置の情報を得て、ユ
ーザ位置に最も近いビーコン放送局を選択する。そして
選択したビーコン放送局の送信周波数およびボーレート
が読み出され、読み出された送信周波数およびボーレー
トがビーコン受信部207に設定され、ビーコン受信部
207で当該ビーコン放送局からの放送が受信される。
The beacon station information memory 208 stores station almanac data broadcast from a beacon broadcast station.
5 or obtains information on the user position from the input unit 212, and selects the beacon broadcast station closest to the user position. Then, the transmission frequency and the baud rate of the selected beacon broadcasting station are read, the read transmission frequency and the baud rate are set in the beacon receiving section 207, and the beacon receiving section 207 receives the broadcast from the beacon broadcasting station.

【0006】一方、GPSアルマナックメモリ202に
は、衛星から送信されたアルマナックデータが記憶され
ており、衛星選択部204ではリアルタイムクロック2
03からの現在時刻情報を得て、全ての衛星の衛星位
置,速度を算出し、この衛星位置,速度の情報とユーザ
位置とから、各衛星の仰角を計算し、故障等問題が生じ
ている衛星を除き、仰角の大きい順に電波を受信する複
数の受信衛星(例えば4個)を選択し、選択した受信衛
星の衛星番号をGPS受信部201へ入力する。なおユ
ーザ位置の情報は上述のように、測位計算部205から
求められた位置あるいは入力部212で設定された位置
情報が使用される。この衛星の選択は適宜行われる。G
PS受信部201では入力された衛星番号により当該受
信衛星群からの電波を受信し、電波が受信された衛星ま
での擬似距離情報を抽出し、測位計算部205に出力す
る。なお干渉測位を行うDGPSでは、擬似距離情報の
替わりにキャリア位相が抽出され、測位計算部205に
送られて、基準局から送信される基準局で受信したキャ
リア周波数の位相情報と比較して(位相差により)測位
計算が行われることになるが、以下、通常のDGPSを
例に説明する。
On the other hand, the GPS almanac memory 202 stores almanac data transmitted from a satellite.
Obtain the current time information from 03, calculate the satellite positions and velocities of all the satellites, calculate the elevation angle of each satellite from the information of the satellite positions and velocities and the user position, and have a problem such as failure. Except for satellites, a plurality of receiving satellites (for example, four) that receive radio waves in order of increasing elevation are selected, and the satellite numbers of the selected receiving satellites are input to the GPS receiving unit 201. As described above, the user position information uses the position obtained by the positioning calculation unit 205 or the position information set by the input unit 212. The selection of this satellite is performed as appropriate. G
The PS receiving unit 201 receives radio waves from the receiving satellite group based on the input satellite number, extracts pseudo distance information to the satellite from which the radio waves were received, and outputs the information to the positioning calculation unit 205. In DGPS for performing interference positioning, a carrier phase is extracted instead of the pseudorange information, sent to the positioning calculation unit 205, and compared with the carrier frequency phase information received by the reference station and transmitted from the reference station (phase difference). Therefore, the positioning calculation is performed. Hereinafter, a description will be given of a normal DGPS as an example.

【0007】補正情報出力部210は、ビーコン受信部
207から出力される放送データからGPS補正データ
を抽出して擬似距離に対する補正量を算出し、測位計算
部205へその情報を出力する。測位計算部205で
は、GPS受信部201から出力される擬似距離情報
を、入力される擬似距離補正量で補正し、補正した擬似
距離で測位計算を行い、ユーザの位置,速度を算出す
る。そして算出された位置,速度が表示部213に表示
される。
The correction information output section 210 extracts GPS correction data from the broadcast data output from the beacon receiving section 207, calculates a correction amount for the pseudo distance, and outputs the information to the positioning calculation section 205. The positioning calculation unit 205 corrects the pseudo distance information output from the GPS receiving unit 201 with the input pseudo distance correction amount, performs positioning calculation using the corrected pseudo distance, and calculates the position and speed of the user. Then, the calculated position and speed are displayed on the display unit 213.

【0008】[0008]

【発明が解決しようとする課題】従来のDGPS受信機
では、受信する衛星の選択はユーザ位置を基準として仰
角の大きい順に複数個の衛星を選択する構成となってい
るので、測位精度が低下したり、測位情報の算出に時間
がかかる場合が生じる。すなわち基準局とユーザとの距
離が離れている場合、同じ衛星でも仰角が異なってくる
ためユーザ位置で仰角に基づいて選択される複数の衛星
と、基準局で仰角に基づいて選択される複数の衛星とに
ズレが生じるが、このズレが生じた場合、ディファレン
シャル補正に使用できる衛星は共通の衛星に限られるの
で、ディファレンシャル補正に使用できる衛星の数が少
なくなり、その結果、測位精度の低下や測位情報の算出
に時間がかかるという問題点があった。
In the conventional DGPS receiver, the satellite to be received is selected from a plurality of satellites in descending elevation angle with respect to the user position, so that the positioning accuracy is reduced. Or it takes time to calculate the positioning information. That is, when the distance between the reference station and the user is large, the elevation angle is different even for the same satellite, so that a plurality of satellites selected based on the elevation angle at the user position and a plurality of satellites selected based on the elevation angle at the reference station. When this deviation occurs, the number of satellites that can be used for differential correction is reduced because the satellites that can be used for differential correction are limited to common satellites, resulting in a decrease in positioning accuracy and positioning information. There is a problem that it takes time to calculate.

【0009】本発明はかかる問題点を解決するためにな
されたものであり、基準局とユーザとの距離が離れてい
ても双方で選択する衛星を一致させ、ディファレンシャ
ル補正できる衛星の数を原則として常時最大数確保でき
るDGPS受信機を提供することを目的としている。
SUMMARY OF THE INVENTION The present invention has been made to solve such a problem. Even when the distance between the reference station and the user is long, the satellites selected by the two stations are made to coincide with each other, and the number of satellites that can be differentially corrected is always constant. It is intended to provide a DGPS receiver capable of securing the maximum number.

【0010】[0010]

【課題を解決するための手段】本発明に係わるDGPS
受信機は、基準局から送られてくる基準局位置を基準と
して各衛星の仰角を算出し、この方法で算出された仰角
の大きい順に電波を受信する複数の衛星を選択すること
とし、基準局で選択される衛星と一致させることとし
た。具体的には、適宜GPS衛星の仰角を計算し、この
仰角情報により電波を受信する複数の衛星を選択し、選
択した衛星からの電波を受信して得られる擬似距離情報
を、基準局から送信される情報のGPS補正データで補
正し、補正した擬似距離により測位情報を出力するDG
PS受信機において、基準局から送信される情報の基準
局位置データにより基準局位置を得、得られた基準局位
置を基準としてGPS衛星の仰角を計算し、この仰角情
報により電波を受信する複数の衛星を選択する手段を備
えたことを特徴とする。
DISCLOSURE OF THE INVENTION DGPS according to the present invention
The receiver calculates the elevation angle of each satellite based on the reference station position sent from the reference station, selects a plurality of satellites that receive radio waves in descending order of the elevation angle calculated by this method, and selects the satellites. Satellites. Specifically, the elevation angle of the GPS satellite is appropriately calculated, a plurality of satellites that receive radio waves are selected based on the elevation angle information, and pseudorange information obtained by receiving radio waves from the selected satellite is transmitted from the reference station. DG that corrects with the GPS correction data of the information and outputs the positioning information based on the corrected pseudo distance
In the PS receiver, the reference station position is obtained from the reference station position data of the information transmitted from the reference station, the elevation angle of the GPS satellite is calculated based on the obtained reference station position, and a plurality of satellites receiving radio waves are selected based on the elevation angle information. Means for performing the operation.

【0011】また、適宜GPS衛星の仰角を計算し、こ
の仰角情報により電波を受信する複数の衛星を選択し、
選択した衛星からの電波を受信して得られる擬似距離情
報を、基準局からビーコン放送局を介して送信される情
報をビーコン受信部で受信してこの情報のGPS補正デ
ータで補正し、補正した擬似距離により測位情報を出力
するビーコンDGPS受信機において、基準局からビー
コン放送局を介して送信される情報の基準局位置データ
により基準局位置を得、得られた基準局位置を基準とし
てGPS衛星の仰角を計算し、この仰角情報により電波
を受信する複数の衛星を選択する手段を備えたことを特
徴とする。
Further, the elevation angles of the GPS satellites are appropriately calculated, and a plurality of satellites for receiving radio waves are selected based on the elevation angle information.
Pseudorange information obtained by receiving radio waves from the selected satellite is received by a beacon receiver from information transmitted from a reference station via a beacon broadcasting station, and corrected with GPS correction data of this information, and the corrected pseudorange information is obtained. In a beacon DGPS receiver that outputs positioning information according to a distance, a reference station position is obtained from reference station position data of information transmitted from a reference station via a beacon broadcasting station, and an elevation angle of a GPS satellite is calculated based on the obtained reference station position. Means for selecting a plurality of satellites for receiving radio waves based on the elevation angle information.

【0012】さらに、適宜GPS衛星の仰角を計算し、
この仰角情報により電波を受信する複数の衛星を選択
し、選択した衛星からのキャリア周波数を受信して得ら
れる位相情報を、基準局から送信される情報の基準局で
受信したキャリア周波数の位相情報と比較して干渉測位
を行い測位情報を出力するDGPS受信機において、基
準局から送信される情報の基準局位置データにより基準
局位置を得、得られた基準局位置を基準としてGPS衛
星の仰角を計算し、この仰角情報により電波を受信する
複数の衛星を選択する手段を備えたことを特徴とする。
Further, the elevation angle of the GPS satellite is calculated as appropriate,
Based on the elevation information, a plurality of satellites that receive radio waves are selected, and the phase information obtained by receiving the carrier frequency from the selected satellite is compared with the phase information of the carrier frequency received by the reference station in the information transmitted from the reference station. In a DGPS receiver that performs interference positioning and outputs positioning information, a reference station position is obtained from reference station position data of information transmitted from the reference station, an elevation angle of a GPS satellite is calculated based on the obtained reference station position, and the elevation angle is calculated. A means for selecting a plurality of satellites for receiving radio waves based on information is provided.

【0013】[0013]

【発明の実施の形態】以下、本発明の実施の形態を図面
を参照して説明する。図1は、本発明のDGPS受信機
の装置構成の一実施形態を示すブロック図である。図に
おいて、100はGPS受信用アンテナ、101はGP
S受信部、102はGPSアルマナック(almanac) メモ
リ、103はリアルタイムクロック、104は衛星選択
部、105は測位計算部、106はビーコン受信用アン
テナ、107はビーコン受信部、108はビーコン局情
報メモリ、109はビーコン局選択部、110は補正情
報出力部、111は基準局位置メモリ、112は入力
部、113は表示部を示す。
Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a block diagram showing one embodiment of the device configuration of the DGPS receiver of the present invention. In the figure, 100 is a GPS receiving antenna, 101 is GP
S receiving unit, 102 is a GPS almanac (almanac) memory, 103 is a real-time clock, 104 is a satellite selecting unit, 105 is a positioning calculation unit, 106 is a beacon receiving antenna, 107 is a beacon receiving unit, 108 is a beacon station information memory, Reference numeral 109 denotes a beacon station selection unit, 110 denotes a correction information output unit, 111 denotes a reference station position memory, 112 denotes an input unit, and 113 denotes a display unit.

【0014】次に動作について説明する。ビーコン局情
報メモリ108には、ビーコン放送局から放送された局
アルマナックデータが記憶されており、ビーコン局選択
部109では測位計算部105或は入力部112からの
ユーザ位置の情報を得て、ユーザ位置に最も近いビーコ
ン放送局を選択する。そして選択したビーコン放送局の
送信周波数およびボーレートが読み出され、読み出され
た送信周波数およびボーレートがビーコン受信部107
に設定され、ビーコン受信部107で当該ビーコン放送
局からの放送が受信される。受信されたビーコン放送局
からの放送のうち、GPS補正データは補正情報出力部
110へ出力され、基準局の位置情報は基準局位置メモ
リ111へ出力される。
Next, the operation will be described. The beacon station information memory 108 stores station almanac data broadcast from a beacon broadcast station, and the beacon station selection unit 109 obtains information on the user position from the positioning calculation unit 105 or the input unit 112, and Select the beacon station closest to the location. Then, the transmission frequency and baud rate of the selected beacon broadcasting station are read, and the read transmission frequency and baud rate are read by the beacon receiving unit 107.
, And the beacon receiving unit 107 receives a broadcast from the beacon broadcast station. In the received broadcast from the beacon broadcast station, the GPS correction data is output to the correction information output unit 110, and the position information of the reference station is output to the reference station position memory 111.

【0015】一方、GPSアルマナックメモリ102に
は、衛星から送信されたアルマナックデータが記憶され
ており、衛星選択部104ではリアルタイムクロック1
03からの現在時刻情報を得て、全の衛星の衛星位置,
速度を算出し、この衛星位置,速度の情報と、基準局位
置メモリ111から読み出した基準局位置情報とから、
基準局の位置を基準として各衛星の仰角を計算し、故障
等問題が生じている衛星を除き、仰角の大きい順に電波
を受信する複数の受信衛星(例えば4個)を選択し、選
択した受信衛星の衛星番号をGPS受信部101へ入力
する。なお、この衛星の選択は適宜行われる。
On the other hand, the GPS almanac memory 102 stores almanac data transmitted from a satellite.
Obtain the current time information from 03, the satellite positions of all satellites,
The speed is calculated, and from the satellite position and speed information and the reference station position information read from the reference station position memory 111,
The elevation angle of each satellite is calculated based on the position of the reference station, and a plurality of reception satellites (for example, four) receiving radio waves in descending order of the elevation angle are selected except for a satellite having a problem such as a failure, and the selected reception satellite is selected. Is input to the GPS receiver 101. The selection of this satellite is performed as appropriate.

【0016】GPS受信部101では入力された衛星番
号により当該受信衛星群からの電波を受信し、電波が受
信された衛星までの擬似距離情報を抽出し、測位計算部
105に出力する。補正情報出力部110は、ビーコン
受信部107から出力されるGPS補正データから擬似
距離に対する補正量を算出し、測位計算部105へその
情報を出力する。測位計算部105では、GPS受信部
101から出力される擬似距離情報を、入力される擬似
距離補正量で補正し、補正された擬似距離で測位計算を
行い、ユーザの位置,速度を算出する。そして算出され
た位置,速度が表示部113に表示される。
The GPS receiving section 101 receives radio waves from the receiving satellite group based on the input satellite number, extracts pseudo distance information to the satellite from which the radio waves have been received, and outputs the information to the positioning calculation section 105. The correction information output unit 110 calculates a correction amount for the pseudo distance from the GPS correction data output from the beacon receiving unit 107 and outputs the information to the positioning calculation unit 105. The positioning calculation unit 105 corrects the pseudo distance information output from the GPS receiving unit 101 with the input pseudo distance correction amount, performs positioning calculation using the corrected pseudo distance, and calculates the position and speed of the user. Then, the calculated position and speed are displayed on the display unit 113.

【0017】すなわち本実施形態に示すGPS受信機
は、電波を受信する複数の衛星の選択を基準局位置を基
準として算出した仰角により適宜選択する構成としたの
で、基準局とユーザとの距離が離れていても双方で選択
する衛星を一致させることができるため、デファレンシ
ャル補正に使用できる衛星の数を原則として常時最大数
確保できることになる。なお本発明の場合、DGPS受
信機の位置(ユーザ位置)を基準とした見た場合、必ず
しも仰角の大きい衛星が選択されることにはならない
が、仰角は約5°以上あれば通常電波の受信に問題がな
いことが知られており、特に問題は生じない。
That is, the GPS receiver shown in the present embodiment is configured such that the selection of a plurality of satellites for receiving radio waves is appropriately selected based on the elevation angle calculated based on the position of the reference station, so that the distance between the reference station and the user is long. However, since the satellites selected by both sides can be matched, the maximum number of satellites that can be used for differential correction can always be secured in principle. In the case of the present invention, a satellite having a large elevation angle is not always selected when viewed with reference to the position of the DGPS receiver (user position). Is known to have no problem, and no particular problem occurs.

【0018】なお上述の実施形態では、ビーコンDGP
S受信機を例に説明しているが、一般のDGPS受信機
でも実施でき、更に干渉測位を行うDGPS受信機でも
実施できることは言うまでもない。
In the above embodiment, the beacon DGP
Although the S receiver has been described as an example, it is needless to say that the invention can be implemented with a general DGPS receiver and further with a DGPS receiver that performs interference positioning.

【0019】[0019]

【発明の効果】以上説明したように本発明のDGPS受
信機は、電波を受信する衛星の選択を、基準局の位置を
基準として各衛星の仰角を計算して行う構成としたの
で、ディファレンシャル補正できる衛星の数を原則とし
て常時最大数確保でき、測位精度を向上させ、測位時間
の短縮が図れるという効果がある。
As described above, the DGPS receiver of the present invention is configured to calculate the elevation angle of each satellite based on the position of the reference station by selecting the satellite receiving the radio wave, so that the differential correction can be performed. As a general rule, the maximum number of satellites can be secured at all times, so that the positioning accuracy can be improved and the positioning time can be shortened.

【図面の簡単な説明】[Brief description of the drawings]

【図1】本発明のDGPS受信機の装置構成の一実施形
態を示すブロック図である。
FIG. 1 is a block diagram showing an embodiment of a device configuration of a DGPS receiver of the present invention.

【図2】従来のこの種のDGPS受信機の装置構成の一
例を示すブロック図である。
FIG. 2 is a block diagram showing an example of a device configuration of a conventional DGPS receiver of this type.

【符号の説明】[Explanation of symbols]

100,200 GPS受信用アンテナ 101,201 GPS受信部 102,202 GPSアルマナックメモリ 103,203 リアルタイムクロック 104,204 衛星選択部 105,205 測位計算部 106,206 ビーコン受信用アンテナ 107,207 ビーコン受信部 108,208 ビーコン局情報メモリ 109,209 ビーコン局選択部 110,210 補正情報出力部 111 基準局位置メモリ 112,212 入力部 113,213 表示部 100, 200 GPS receiving antenna 101, 201 GPS receiving unit 102, 202 GPS almanac memory 103, 203 Real time clock 104, 204 Satellite selecting unit 105, 205 Positioning calculating unit 106, 206 Beacon receiving antenna 107, 207 Beacon receiving unit 108 , 208 Beacon station information memory 109, 209 Beacon station selection section 110, 210 Correction information output section 111 Reference station position memory 112, 212 Input section 113, 213 Display section

Claims (3)

【特許請求の範囲】[Claims] 【請求項1】 適宜GPS衛星の仰角を計算し、この仰
角情報により電波を受信する複数の衛星を選択し、選択
した衛星からの電波を受信して得られる擬似距離情報
を、基準局から送信される情報のGPS補正データで補
正し、補正した擬似距離により測位情報を出力するDG
PS受信機において、 基準局から送信される情報の基準局位置データにより基
準局位置を得、得られた基準局位置を基準としてGPS
衛星の仰角を計算し、この仰角情報により電波を受信す
る複数の衛星を選択する手段、 を備えたことを特徴とするDGPS受信機。
An elevation angle of a GPS satellite is appropriately calculated, a plurality of satellites receiving radio waves are selected based on the elevation angle information, and pseudorange information obtained by receiving radio waves from the selected satellite is transmitted from a reference station. DG that corrects with the GPS correction data of the information and outputs the positioning information based on the corrected pseudo distance
In the PS receiver, the reference station position is obtained from the reference station position data of the information transmitted from the reference station, and the GPS position is determined based on the obtained reference station position.
Means for calculating an elevation angle of a satellite and selecting a plurality of satellites for receiving radio waves based on the elevation angle information.
【請求項2】 適宜GPS衛星の仰角を計算し、この仰
角情報により電波を受信する複数の衛星を選択し、選択
した衛星からの電波を受信して得られる擬似距離情報
を、基準局からビーコン放送局を介して送信される情報
をビーコン受信部で受信してこの情報のGPS補正デー
タで補正し、補正した擬似距離により測位情報を出力す
るビーコンDGPS受信機において、 基準局からビーコン放送局を介して送信される情報の基
準局位置データにより基準局位置を得、得られた基準局
位置を基準としてGPS衛星の仰角を計算し、この仰角
情報により電波を受信する複数の衛星を選択する手段、 を備えたことを特徴とするビーコンDGPS受信機。
2. An elevation angle of a GPS satellite is appropriately calculated, a plurality of satellites for receiving radio waves are selected based on the elevation angle information, and pseudo-range information obtained by receiving radio waves from the selected satellite is transmitted from a reference station to a beacon broadcast. A beacon DGPS receiver that receives information transmitted via a station at a beacon receiving unit, corrects the information with GPS correction data of the information, and outputs positioning information based on the corrected pseudo distance. Means for obtaining a reference station position based on reference station position data of transmitted information, calculating an elevation angle of a GPS satellite based on the obtained reference station position, and selecting a plurality of satellites for receiving radio waves based on the elevation angle information. A beacon DGPS receiver characterized by the above-mentioned.
【請求項3】 適宜GPS衛星の仰角を計算し、この仰
角情報により電波を受信する複数の衛星を選択し、選択
した衛星からのキャリア周波数を受信して得られる位相
情報を、基準局から送信される情報の基準局で受信した
キャリア周波数の位相情報と比較して干渉測位を行い測
位情報を出力するDGPS受信機において、 基準局から送信される情報の基準局位置データにより基
準局位置を得、得られた基準局位置を基準としてGPS
衛星の仰角を計算し、この仰角情報により電波を受信す
る複数の衛星を選択する手段、 を備えたことを特徴とするDGPS受信機。
3. An elevation angle of a GPS satellite is appropriately calculated, a plurality of satellites for receiving radio waves are selected based on the elevation angle information, and phase information obtained by receiving a carrier frequency from the selected satellite is transmitted from a reference station. DGPS receiver that performs interference positioning by comparing the information with the carrier frequency phase information received by the reference station and outputs the positioning information, obtains the reference station position from the reference station position data of the information transmitted from the reference station, and obtains the obtained reference station. GPS based on position
Means for calculating an elevation angle of a satellite and selecting a plurality of satellites for receiving radio waves based on the elevation angle information.
JP23784197A 1997-08-20 1997-08-20 DGPS receiver Expired - Fee Related JP3708689B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP23784197A JP3708689B2 (en) 1997-08-20 1997-08-20 DGPS receiver

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP23784197A JP3708689B2 (en) 1997-08-20 1997-08-20 DGPS receiver

Publications (2)

Publication Number Publication Date
JPH1164478A true JPH1164478A (en) 1999-03-05
JP3708689B2 JP3708689B2 (en) 2005-10-19

Family

ID=17021213

Family Applications (1)

Application Number Title Priority Date Filing Date
JP23784197A Expired - Fee Related JP3708689B2 (en) 1997-08-20 1997-08-20 DGPS receiver

Country Status (1)

Country Link
JP (1) JP3708689B2 (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002122652A (en) * 2000-10-12 2002-04-26 Nec Corp Correction data calculating system for dgps
KR100399703B1 (en) * 2001-04-09 2003-09-29 (주)비웨이 High-Precision GPS Chipset Using Embedded DGPS Data Receiving Units for On-Air Broadcasting Subcarrier
CN104035107A (en) * 2014-06-11 2014-09-10 东莞市泰斗微电子科技有限公司 Differential information transmitting method of satellite navigation satellite navigation receiver and corresponding receiver
CN104035108A (en) * 2014-06-11 2014-09-10 东莞市泰斗微电子科技有限公司 Differential information transmitting method of satellite navigation satellite navigation receiver and corresponding receiver
KR101645411B1 (en) * 2015-01-27 2016-08-04 한국해양과학기술원 D g p s method based on self reference station

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002122652A (en) * 2000-10-12 2002-04-26 Nec Corp Correction data calculating system for dgps
KR100399703B1 (en) * 2001-04-09 2003-09-29 (주)비웨이 High-Precision GPS Chipset Using Embedded DGPS Data Receiving Units for On-Air Broadcasting Subcarrier
CN104035107A (en) * 2014-06-11 2014-09-10 东莞市泰斗微电子科技有限公司 Differential information transmitting method of satellite navigation satellite navigation receiver and corresponding receiver
CN104035108A (en) * 2014-06-11 2014-09-10 东莞市泰斗微电子科技有限公司 Differential information transmitting method of satellite navigation satellite navigation receiver and corresponding receiver
KR101645411B1 (en) * 2015-01-27 2016-08-04 한국해양과학기술원 D g p s method based on self reference station

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