JPH07135679A - Mobile station position specification device - Google Patents
Mobile station position specification deviceInfo
- Publication number
- JPH07135679A JPH07135679A JP28239093A JP28239093A JPH07135679A JP H07135679 A JPH07135679 A JP H07135679A JP 28239093 A JP28239093 A JP 28239093A JP 28239093 A JP28239093 A JP 28239093A JP H07135679 A JPH07135679 A JP H07135679A
- Authority
- JP
- Japan
- Prior art keywords
- mobile station
- station
- ranging
- signal
- distance
- 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
Links
Landscapes
- Mobile Radio Communication Systems (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は位置が既知の複数の測距
局から、位置が未知の移動局へ測距信号を発信し、移動
局から返送される位置信号を受信するまでの時間から、
各測距局と移動局間の距離を算出し、これらの距離と各
測距局の位置によって移動局の位置を特定する移動局位
置特定装置に係り、特に移動局が、測距信号を多重化し
て共通の位置信号を各測距局に返送し、各測距局がその
位置信号から自己の測距符号を抽出して距離を算出する
ようにした移動局位置特定装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to the time from when a plurality of distance measuring stations whose positions are already known are transmitted to a mobile station whose position is unknown and when a position signal returned from the mobile station is received. ,
The present invention relates to a mobile station position specifying device that calculates the distance between each distance measuring station and a mobile station and specifies the position of the mobile station based on these distances and the position of each distance measuring station. The present invention relates to a mobile station position identifying device that converts the common position signal to each distance measuring station and returns the common position signal, and each distance measuring station extracts its own distance measuring code from the position signal to calculate the distance.
【０００２】[0002]
【従来の技術】一般に、人、自動車、船舶、宇宙船等の
移動物に受送信機能を有する移動局を持たせ、位置が既
知の複数の測距局から移動局へ測距信号を送り、移動局
から返送された位置信号の所用時間と各測距局の位置に
よって、移動局の位置を特定する移動局位置特定装置が
知られている。2. Description of the Related Art Generally, a moving object such as a person, an automobile, a ship, and a spacecraft is provided with a mobile station having a transmitting / receiving function, and a ranging signal is sent from a plurality of ranging stations whose positions are known to the mobile station. There is known a mobile station position specifying device that specifies the position of the mobile station based on the required time of the position signal returned from the mobile station and the position of each ranging station.
【０００３】図４は、この電波による移動局の位置特定
装置の概念を示している。図において、移動局２１は受
送信器を有し、この移動局２１へ少なくとも３つの位置
が既知の測距局２２ａ，２２ｂ，２２ｃが測距信号を送
る。移動局２１は測距信号を受け取って、直ちにこれを
返送する。測距局２２ａ，２２ｂ，２２ｃは、返送され
た信号から電波の往復時間を算出し、これに基づいて移
動局２１までの距離ｄ1 ，ｄ2 ， ｄ3 を算出する。さ
らに、この距離ｄ1 ，ｄ2 ， ｄ3 と各測距局２２ａ，
２２ｂ，２２ｃの位置から移動局２１の位置を特定す
る。FIG. 4 shows the concept of a position specifying device for a mobile station using this radio wave. In the figure, a mobile station 21 has a transmitter / receiver, and at least three distance measuring stations 22a, 22b, 22c whose positions are known send a distance measuring signal to the mobile station 21. The mobile station 21 receives the distance measurement signal and immediately returns it. The distance-measuring stations 22a, 22b, 22c calculate the round-trip time of the radio wave from the returned signals, and calculate the distances d1, d2, d3 to the mobile station 21 based on the calculated round-trip times. Further, the distances d1, d2, d3 and the distance measuring stations 22a,
The position of the mobile station 21 is specified from the positions of 22b and 22c.
【０００４】図５は、移動局２１と測距局２２ａ，２２
ｂ，２２ｃの構成を示している。測距局２２ａ，２２
ｂ，２２ｃは同一の構成を有し、それぞれ各測距局に特
有の測距符号ａ，ｂ，ｃを生成する測距符号生成器２３
ａ，２３ｂ，２３ｃと、測距符号ａ，ｂ，ｃを電波に乗
せて送信する送信器２４ａ，２４ｂ，２４ｃと、位置信
号を受信する受信器２５ａ，２５ｂ，２５ｃと、送信と
受信の時間差から移動局までの距離を計算する距離計数
器２６ａ，２６ｂ，２６ｃとを有している。また、測距
局側は、各測距局と移動局の距離から移動局の位置を特
定する判定部２７を有している。FIG. 5 shows a mobile station 21 and distance measuring stations 22a and 22.
The structure of b and 22c is shown. Distance measuring stations 22a, 22
b and 22c have the same configuration, and the ranging code generator 23 generates the ranging codes a, b and c unique to each ranging station.
a, 23b, 23c, transmitters 24a, 24b, 24c for transmitting the distance measurement codes a, b, c on radio waves, receivers 25a, 25b, 25c for receiving position signals, and a time difference between transmission and reception To a mobile station, the distance counters 26a, 26b and 26c are included. Further, the ranging station side has a determination unit 27 that identifies the position of the mobile station from the distance between each ranging station and the mobile station.
【０００５】一方、移動局２１は、３組の受送信器を有
し、受信器２８ａ，２８ｂ，２８ｃと、送信器２９ａ，
２９ｂ，２９ｃを有している。On the other hand, the mobile station 21 has three sets of receivers / transmitters, which are receivers 28a, 28b, 28c and transmitters 29a, 28a.
It has 29b and 29c.
【０００６】測距局２２ａ，２２ｂ，２２ｃは、それぞ
れの測距符号ａ，ｂ，ｃを異なる周波数の測距信号Ｆa
，Ｆb ，Ｆc に乗せて移動局２１へ送信し、移動局２
１はそれぞれの周波数に設定された受信器２８ａ，２８
ｂ，２８ｃによってこの測距信号Ｆa ，Ｆb ，Ｆc を受
け取り、それぞれ測距信号Ｆa ，Ｆb ，Ｆc と同一周波
数の位置信号Ｆa ’，Ｆb ’，Ｆc ’を返送する。The distance measuring stations 22a, 22b, 22c use the respective distance measuring codes a, b, c as distance measuring signals Fa of different frequencies.
, Fb, Fc are transmitted to the mobile station 21, and the mobile station 2
1 is a receiver 28a, 28 set to each frequency
The distance measuring signals Fa, Fb and Fc are received by b and 28c, and position signals Fa ', Fb' and Fc 'having the same frequency as the distance measuring signals Fa, Fb and Fc are returned.
【０００７】この位置信号Ｆa ’，Ｆb ’，Ｆc ’は、
それぞれ測距局２２ａ，２２ｂ，２２ｃの受信器２５
ａ，２５ｂ，２５ｃによって受信され、続いて距離計数
器２６ａ，２６ｂ，２６ｃによって電波の伝達時間から
移動局２１までの距離が算出される。The position signals Fa ', Fb' and Fc 'are
Receivers 25 of the ranging stations 22a, 22b, 22c, respectively
a, 25b, 25c, and then the distance counters 26a, 26b, 26c calculate the distance from the radio wave transmission time to the mobile station 21.
【０００８】判定部２７は、上記各測距局２２ａ，２２
ｂ，２２ｃと移動局２１間の距離から移動局２１の位置
を特定する。The determination section 27 is provided with the distance measuring stations 22a and 22a.
The position of the mobile station 21 is specified from the distance between the mobile stations 21 and 22b.
【０００９】[0009]
【発明が解決しようとする課題】しかしながら、上記従
来の移動局位置特定装置では、移動局が各測距局に個別
に送信する複数の送信器を有しているので、構成が複雑
であった。However, in the above-mentioned conventional mobile station position specifying device, the mobile station has a plurality of transmitters for individually transmitting to each ranging station, so that the configuration is complicated. .
【００１０】また、従来の移動局位置特定装置の構成で
は、複数の移動局が同一時間帯で同一の領域内で移動す
る場合、受送信の電波が互いに干渉する可能性があり、
従来、このような場合では、各移動局の交信周波数バン
ドをずらすことによって対処していた。Further, in the configuration of the conventional mobile station position specifying device, when a plurality of mobile stations move within the same area in the same time zone, the received and transmitted radio waves may interfere with each other.
Conventionally, such a case has been dealt with by shifting the communication frequency band of each mobile station.
【００１１】しかし、交信周波数をずらす方法は、電波
の周波数バンドの使用が不経済であり、測位すべき移動
局によって使用する周波数バンドを切り替えなければな
らず、同一電波周波数バンドで複数の移動局の位置を把
握することができなかった。However, in the method of shifting the communication frequency, it is uneconomical to use the frequency band of the radio wave, and the frequency band to be used must be switched depending on the mobile station to be positioned, and a plurality of mobile stations in the same radio frequency band are required. I couldn't figure out where.
【００１２】そこで、本発明の目的は、上記従来技術の
課題を解決し、構造が簡素であり、同一時間帯と同一領
域内で移動する複数の移動局の位置を、同一周波数バン
ドの測距用の電波で特定できる移動局位置特定装置を提
供することにある。[0012] Therefore, an object of the present invention is to solve the above-mentioned problems of the prior art and to measure the positions of a plurality of mobile stations moving in the same time zone and the same area in the same frequency band with a simple structure. It is to provide a mobile station position identifying device that can identify a mobile station using a radio wave.
【００１３】[0013]
【課題を解決するための手段】上記目的を達成するため
に、本発明による移動局位置特定装置は、測距信号を受
信して位置信号を返信する移動局と、測距信号を発信し
て、位置信号が返送されるまでの時間から前記移動局ま
での距離を計測する複数の測距局と、各測距局の位置と
各測距局と移動局間の距離から移動局の位置を特定する
判定部とを有する移動局位置特定装置において、前記移
動局は、前記各測距局の測距信号を受信する複数の受信
器と、各測距局の測距信号を多重化して位置信号を生成
する多重化演算器と、この位置信号を各測距局へ返送す
る送信器とを有し、前記各測距局は、各測距局に固有の
測距符号を生成する測距符号生成器と、この測距符号を
電波に乗せて測距信号として送信する送信器と、前記移
動局からの位置信号を受信する受信器と、その測距局の
固有の測距符号と位置信号との相関をとって、受送信に
かかった時間を算出し、前記移動局までの距離を算出す
る距離計数器とを有することを特徴とするものである。In order to achieve the above object, a mobile station position specifying device according to the present invention transmits a distance measurement signal to a mobile station which receives a distance measurement signal and returns a position signal. , A plurality of ranging stations that measure the distance to the mobile station from the time until the position signal is returned, and the location of each ranging station and the location of the mobile station from the distance between each ranging station and the mobile station. In a mobile station position identifying device having a determining unit for identifying, the mobile station multiplexes a plurality of receivers for receiving the ranging signals of the ranging stations and the ranging signals of the ranging stations to position the signals. It has a multiplexing calculator for generating a signal and a transmitter for returning the position signal to each ranging station, and each ranging station produces a ranging code unique to each ranging station. A code generator, a transmitter for transmitting this distance measurement code on a radio wave as a distance measurement signal, and a position signal from the mobile station. And a distance counter for calculating the distance to the mobile station by calculating the time taken for transmission and reception by taking the correlation between the distance measurement code unique to the distance measurement station and the position signal. It is characterized by having.
【００１４】また、複数の移動局の位置を特定する本発
明による移動局位置特定装置は、測距信号を受信して位
置信号を返信する複数の移動局と、測距信号を発信し
て、位置信号が返送されるまでの時間から送信源の移動
局までの距離を計測する複数の測距局と、送信源の移動
局を特定するＩＤ検知局と、各測距局の位置と移動局の
ＩＤ情報と各測距局と移動局間の距離から各移動局の位
置を特定する判定部とを有する移動局位置特定装置にお
いて、前記各移動局は、その移動局に固有のＩＤ信号を
生成する移動局ＩＤ生成器と、前記各測距局の測距信号
を受信する複数の受信器と、各測距局の測距信号と前記
ＩＤ信号を多重化して位置信号を生成する多重化演算器
と、この位置信号を返送する送信器と、他の移動局の送
信と干渉しないように確率的に送信タイミングを決定す
る確率発生器とを有し、前記各測距局は、各測距局に固
有の測距符号を生成する測距符号生成器と、この測距符
号を電波に乗せて測距信号として送信する送信器と、前
記移動局からの位置信号を受信する受信器と、その測距
局の固有の測距符号と位置信号との相関をとって、受送
信にかかった時間を算出し、送信源の移動局までの距離
を算出する距離計数器とを有し、前記ＩＤ検知局は、移
動局からの位置信号を受信する受信器と、各測距局の測
距符号を生成する測距符号生成器と、各測距局の測距符
号と位置信号との相関をとって、位置信号から各測距局
の測距符号を排除してＩＤ情報を抽出する相関器とを有
することを特徴とするものである。Further, the mobile station position specifying device according to the present invention for specifying the positions of a plurality of mobile stations transmits a distance measuring signal to a plurality of mobile stations which receive the distance measuring signal and return the position signal. A plurality of ranging stations that measure the distance from the time when the position signal is returned to the mobile station of the transmission source, an ID detection station that identifies the mobile station of the transmission source, the location of each ranging station and the mobile station In the mobile station position specifying device having a determination unit that specifies the position of each mobile station from the distance information between each ranging station and the mobile station, each mobile station outputs an ID signal unique to that mobile station. A mobile station ID generator for generating, a plurality of receivers for receiving the ranging signals of the ranging stations, and a multiplexing for multiplexing the ranging signals of the ranging stations and the ID signal to generate a position signal. Do not interfere with the operation unit, the transmitter that returns this position signal, and the transmissions of other mobile stations. Each ranging station has a probability generator that stochastically determines the transmission timing, and each ranging station generates a ranging code unique to each ranging station, and the ranging code to radio waves. Transmitting and receiving is performed by correlating the transmitter with the transmitter for transmitting as a distance measurement signal, the receiver for receiving the position signal from the mobile station, and the distance measurement code unique to the distance measurement station and the position signal. And a distance counter for calculating the distance to the mobile station of the transmission source, and the ID detection station includes a receiver for receiving a position signal from the mobile station and a measurement for each ranging station. The ranging code generator for generating the ranging code is correlated with the ranging code of each ranging station and the position signal to remove the ranging code of each ranging station from the position signal to extract the ID information. And a correlator.
【００１５】[0015]
【作用】本発明の移動局位置特定装置では、移動局が多
重化演算器を備え、この多重化演算器によって各測距局
からの測距信号を一つの位置信号に多重化する。次に、
移動局に備えられた送信器によって、この多重化された
位置信号を共通の位置信号として各測距局へ返送する。In the mobile station position specifying device of the present invention, the mobile station is provided with a multiplexing arithmetic unit, and the multiplexing arithmetic unit multiplexes the ranging signals from each ranging station into one position signal. next,
The transmitter provided in the mobile station returns the multiplexed position signal to each ranging station as a common position signal.
【００１６】各測距局は距離計数器を備え、この距離計
数器は、相関の方法によって返送された位置信号から自
己の測距符号を認識でき、その時間差を算出して移動局
までの距離を測定することができる。Each distance measuring station is provided with a distance counter, which can recognize its own distance measuring code from the position signal returned by the correlation method, calculate the time difference between the distance measuring code and the distance to the mobile station. Can be measured.
【００１７】すなわち、本発明の移動局位置特定装置に
よれば、各移動局は、一つの送信器を備えていればよ
く、移動局の構造の簡素化を図ることができる。That is, according to the mobile station position specifying device of the present invention, each mobile station only needs to have one transmitter, and the structure of the mobile station can be simplified.
【００１８】また、複数の移動局の位置を特定する本発
明の移動局位置特定装置では、各移動局が移動局ＩＤ生
成器を備え、その移動局のＩＤ信号を生成し、このＩＤ
信号を各測距局の測距信号と多重化する。この多重化に
よって生成された位置信号は、上記同様一つの送信器に
よって各測距局に送られるとともに、ＩＤ検知局にも送
られる。Further, in the mobile station position specifying device of the present invention for specifying the positions of a plurality of mobile stations, each mobile station is provided with a mobile station ID generator, which generates an ID signal of the mobile station,
The signal is multiplexed with the ranging signal of each ranging station. The position signal generated by this multiplexing is sent to each ranging station by one transmitter as described above and also to the ID detection station.
【００１９】ＩＤ検知局では、各測距局の測距符号を生
成する測距符号生成器を備え、前記ＩＤ信号を含む位置
信号から各測距局の測距符号を取り除き、位置信号の送
信源の移動局を特定できる。The ID detection station is provided with a ranging code generator for producing a ranging code of each ranging station, removes the ranging code of each ranging station from the position signal including the ID signal, and transmits the position signal. The source mobile station can be identified.
【００２０】この特定された移動局のＩＤ情報は、上述
方法で測定された各測距局と移動局間の距離とともに判
定部に送られ、これによって送信源の移動局のＩＤとそ
の位置が特定される。The ID information of the specified mobile station is sent to the determination section together with the distance between each ranging station and the mobile station measured by the above-mentioned method, whereby the ID of the mobile station of the transmission source and its position are determined. Specified.
【００２１】また、この複数の移動局の位置を特定する
移動局位置特定装置では、位置信号を送信するタイミン
グを決定する確率発生器を備えている。この確率発生器
は、各移動局の送信が互いに干渉しないように、十分短
い時間内で位置信号を送信するように送信器を制御す
る。Further, the mobile station position specifying device for specifying the positions of the plurality of mobile stations is provided with a probability generator for determining the timing of transmitting the position signal. The probability generator controls the transmitter to transmit the position signal within a sufficiently short time so that the transmissions of the mobile stations do not interfere with each other.
【００２２】この確率発生器の作用によって、各移動局
は、互いに干渉しないようにランダムに位置信号を測距
局とＩＤ検知局に送ることができ、見かけ上同一の周波
数内で、同時に複数の移動局の位置を特定する移動局位
置特定装置を提供することができる。By the operation of this probability generator, each mobile station can send a position signal to the ranging station and the ID detection station at random so as not to interfere with each other, and a plurality of mobile stations simultaneously appear in the same frequency. A mobile station position specifying device for specifying the position of a mobile station can be provided.
【００２３】[0023]
【実施例】次に、本発明の一実施例について図面を参照
して以下に説明する。図１は、本発明による移動局位置
特定装置の一実施例の構成を示している。本実施例の移
動局位置特定装置１は、３つの測距局２a ，２ｂ，２ｃ
と、２つの移動局３ｘ，３ｙと、移動局のＩＤ（識別用
の符号）を特定するＩＤ検知局４と、判定部５とからな
る。An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 shows the configuration of an embodiment of a mobile station position specifying device according to the present invention. The mobile station position specifying device 1 of the present embodiment includes three distance measuring stations 2a, 2b, 2c.
It includes two mobile stations 3x and 3y, an ID detection station 4 that identifies the ID (identification code) of the mobile station, and a determination unit 5.
【００２４】測距局２ａ，２ｂ，２ｃは同一の構成を有
し、それぞれ測距符号生成器６ａ，６ｂ，６ｃと、送信
器７ａ，７ｂ，７ｃと、受信器８ａ，８ｂ，８ｃと、距
離計数器９ａ，９ｂ，９ｃとを有している。The distance measuring stations 2a, 2b and 2c have the same structure, and the distance measuring code generators 6a, 6b and 6c, the transmitters 7a, 7b and 7c and the receivers 8a, 8b and 8c, respectively. It has distance counters 9a, 9b and 9c.
【００２５】移動局３ｘ，３ｙは同一の構成を有し、そ
れぞれ移動局ＩＤ生成器１０ｘ，１０ｙと、各３個の受
信器１１ｘ（１１ｘａ，１１ｘｂ，１１ｘｃ），１１ｙ
（１１ｙａ，１１ｙｂ，１１ｙｃ）と、多重化演算器１
２ｘ，１２ｙと、送信器１３ｘ，１３ｙと、確率発生器
１４ｘ，１４ｙとを有している。The mobile stations 3x and 3y have the same configuration, and the mobile station ID generators 10x and 10y and the three receivers 11x (11xa, 11xb, 11xc) and 11y, respectively.
(11ya, 11yb, 11yc) and the multiplexing operator 1
2x, 12y, transmitters 13x, 13y, and probability generators 14x, 14y.
【００２６】また、ＩＤ検知局４は、受信器１５と、直
列的に接続された３つの相関器１６ａ，１６ｂ，１６ｃ
と、これら相関器１６ａ，１６ｂ，１６ｃにそれぞれ接
続された３つの測距符号生成器１７ａ，１７ｂ，１７ｃ
とを有している。Further, the ID detection station 4 includes a receiver 15 and three correlators 16a, 16b and 16c connected in series.
And three ranging code generators 17a, 17b, 17c connected to the correlators 16a, 16b, 16c, respectively.
And have.
【００２７】判定部５は、各測距局２a ，２ｂ，２ｃと
移動局３ｘ，３ｙとの間の距離から移動局３ｘ，３ｙの
位置を算出等する図示しない処理回路を内蔵している。The determination section 5 has a built-in processing circuit (not shown) for calculating the positions of the mobile stations 3x and 3y from the distances between the distance measuring stations 2a, 2b and 2c and the mobile stations 3x and 3y.
【００２８】次に、本実施例の移動局位置特定装置１の
上記構成に基づく作用を以下に説明する。最初に測距局
２a において、測距局２ａに特有な測距符号ａが測距符
号生成器６ａによって生成される。この測距符号ａは、
短周期の所定の長さ（２m −１）を有し、所定の０と１
の配列を有する信号である。この測距符号ａの長さと配
列は、後述するように、自己の測距符号に対する相関性
が強く、他の測距符号との相関性が弱いように設定され
ている。Next, the operation of the mobile station position specifying device 1 of this embodiment based on the above configuration will be described below. First, in the ranging station 2a, the ranging code a unique to the ranging station 2a is generated by the ranging code generator 6a. This distance measuring code a is
Has a predetermined length (2 m -1) of a short cycle, and has a predetermined 0 and 1
Is a signal having an array of. As will be described later, the length and array of the distance measuring code a are set so that the distance measuring code has a strong correlation with the distance measuring code of its own, and has a weak correlation with other distance measuring codes.
【００２９】測距局２a の測距符号ａは、送信器７ａに
送られ、送信器７ａによって所定周波数の電波に乗せら
れ、測距信号Ｆ1 として移動局３ｘ，３ｙへ発信され
る。測距局２a と同様に、測距局２ｂ，２ｃからそれぞ
れ、異なる周波数の測距信号Ｆ2 と測距信号Ｆ3 が移動
局３ｘ，３ｙへ発信される。The distance-measuring code a of the distance-measuring station 2a is sent to the transmitter 7a, put on a radio wave of a predetermined frequency by the transmitter 7a, and transmitted to the mobile stations 3x, 3y as a distance-measuring signal F1. Similar to the distance measuring station 2a, distance measuring signals F2 and F3 having different frequencies are transmitted from the distance measuring stations 2b and 2c to the mobile stations 3x and 3y, respectively.
【００３０】移動局３ｘと移動局３ｙでは同一の処理が
行われるので、以下移動局３ｘを中心に説明する。Since the same processing is performed in the mobile station 3x and the mobile station 3y, the mobile station 3x will be mainly described below.
【００３１】移動局３ｘにおいて、測距信号Ｆ1 ，Ｆ2
，Ｆ3 はそれぞれ異なる周波数バンドの受信器１１ｘ
ａ，１１ｘｂ，１１ｘｃによって受信され、多重化演算
器１２ｘに電気信号として送られる。この多重化演算器
１２ｘへは、移動局ＩＤ生成器１０ｘで生成されたＩＤ
信号ｘも入力される。In the mobile station 3x, the distance measurement signals F1 and F2
, F3 are receivers 11x of different frequency bands
a, 11xb, 11xc, and sent as an electric signal to the multiplexing calculator 12x. The ID generated by the mobile station ID generator 10x is sent to the multiplexing calculator 12x.
The signal x is also input.
【００３２】このＩＤ信号ｘは、移動局３ｘを特定する
所定長（２x ー１）の信号であって、測距信号Ｆ1 ，Ｆ
2 ，Ｆ3 や他の移動局のＩＤ信号との相関性が弱い符号
配列を有している。This ID signal x is a signal of a predetermined length (2 x -1) for specifying the mobile station 3x, and the distance measurement signals F1, F
2, F3 and has a code array with weak correlation with the ID signals of other mobile stations.
【００３３】多重化演算器１２ｘによって、ＩＤ信号ｘ
と測距信号Ｆ1 ，Ｆ2 ，Ｆ3 は排他的論理和演算を施さ
れ、多重化された一系統の信号として送信器１３ｘに送
られる。The ID signal x is output by the multiplexing calculator 12x.
The distance measurement signals F1, F2, and F3 are subjected to exclusive OR operation and sent to the transmitter 13x as a multiplexed signal of one system.
【００３４】一方、移動局３ｙにおいても、移動局ＩＤ
生成器１０ｙで生成されたＩＤ信号ｙと測距信号Ｆ1 ，
Ｆ2 ，Ｆ3 は、多重化演算器１２ｙによって多重化され
て一系統の信号として送信器１３ｙに送られる。On the other hand, the mobile station 3y also has a mobile station ID.
ID signal y generated by the generator 10y and distance measurement signal F1,
F2 and F3 are multiplexed by the multiplexing calculator 12y and sent to the transmitter 13y as a single-system signal.
【００３５】送信器１３ｘ，１３ｙは、確率発生器１４
ｘ，１４ｙの制御の下、上記多重化された信号を位置信
号Ｆ0 として送信する。The transmitters 13x and 13y are the probability generators 14
Under the control of x and 14y, the multiplexed signal is transmitted as the position signal F0.
【００３６】この確率発生器１４ｘ，１４ｙは、移動局
３ｘ，３ｙの送信が確率的に互いに干渉しないように、
送信器１３ｘ，１３ｙの送信タイミングを決定する。こ
の場合、各送信器１３ｘ，１３ｙの送信時間は、互いに
送信が干渉しないように十分に短く、かつ、後に測距局
２a ，２ｂ，２ｃで検知され、処理されるように十分な
長さを有している。The probability generators 14x and 14y prevent the transmissions of the mobile stations 3x and 3y from interfering with each other stochastically.
The transmission timing of the transmitters 13x and 13y is determined. In this case, the transmission time of each transmitter 13x, 13y should be short enough so that the transmissions do not interfere with each other, and long enough for the distance measuring stations 2a, 2b, 2c to be detected and processed later. Have
【００３７】図１は、送信器１３ｘが送信し、送信器１
３ｙは送信を見合わせている状態を示している。送信器
１３ｘの位置信号Ｆ0 は、共通の位置信号として各測距
局２a ，２ｂ，２ｃとＩＤ検知局４に送られる。すでに
説明したように、この位置信号Ｆ0 には、各測距局２a
，２ｂ，２ｃの測距符号ａ，ｂ，ｃと、移動局３ｘの
ＩＤ信号ｘが含まれている。In FIG. 1, the transmitter 13x transmits and the transmitter 1
3y indicates a state in which transmission is suspended. The position signal F0 of the transmitter 13x is sent to each of the distance measuring stations 2a, 2b, 2c and the ID detection station 4 as a common position signal. As described above, this position signal F0 includes the respective ranging stations 2a.
, 2b and 2c, and the ID signal x of the mobile station 3x.
【００３８】また、上記移動局３ｘ，３ｙが測距信号Ｆ
1 ，Ｆ2 ，Ｆ3 を受け取って位置信号Ｆ0 を返送するま
での時間は、測距局と移動局間の電波の伝達時間に影響
を与えない程度の短さである。Further, the mobile stations 3x and 3y receive the distance measurement signal F
The time required for receiving 1, F2 and F3 and returning the position signal F0 is short enough not to affect the transmission time of the radio wave between the ranging station and the mobile station.
【００３９】各測距局２a ，２ｂ，２ｃは、上記位置信
号Ｆ0 を受信し、移動局３ｘまでの距離を測定する。測
距の処理は各測距局２a ，２ｂ，２ｃで同一であるの
で、測距局２a について説明する。Each distance measuring station 2a, 2b, 2c receives the position signal F0 and measures the distance to the mobile station 3x. The distance measuring processing is the same for each of the distance measuring stations 2a, 2b, 2c, so the distance measuring station 2a will be described.
【００４０】位置信号Ｆ0 は受信器８ａによって受信さ
れ、処理可能な電気信号として距離計数器９ａに送られ
る。距離計数器９ａでは、後述する相関の方法によって
位置信号Ｆ0 に含まれている測距符号ａが特定され、そ
の位相差から測距信号Ｆ1 を送信してから位置信号Ｆ0
を受信するまでの電波の伝達時間が算出される。この電
波の伝播時間から測距局２a と移動局３ｘの間の距離が
算出され、距離情報として判定部５に送られる。The position signal F0 is received by the receiver 8a and sent as a processable electrical signal to the distance counter 9a. In the distance counter 9a, the distance measuring code a included in the position signal F0 is specified by the correlation method described later, and the distance measuring signal F1 is transmitted from the phase difference thereof and then the position signal F0 is transmitted.
The transmission time of the radio wave until the reception of is calculated. The distance between the ranging station 2a and the mobile station 3x is calculated from the propagation time of this radio wave, and is sent to the determination unit 5 as distance information.
【００４１】一方、測距局２ｂ，２ｃにおいても、測距
局２a と同様の処理によって、測距局２ｂと移動局３ｘ
との間の距離、および測距局２ｃと移動局３ｘとの間の
距離が算出され、判定部５に送られる。On the other hand, also in the distance measuring stations 2b and 2c, the distance measuring station 2b and the mobile station 3x are subjected to the same processing as the distance measuring station 2a.
And the distance between the ranging station 2c and the mobile station 3x are calculated and sent to the determination unit 5.
【００４２】ＩＤ検知局４では、位置信号Ｆ0 が受信器
１５によって受信され、第一の相関器１６ａに送られ
る。この相関器１６ａには、測距符号生成器１７ａで生
成された測距局２a の測距符号ａが入力される。相関器
１６ａでは、相関の手法によって位置信号中の測距符号
ａが特定され、位置信号から取り除かれて第二の相関器
１６ｂに送られる。第二および第三の相関器１６ｂ，１
６ｃでは、同様の処理によって位置信号から測距符号
ｂ，ｃが逐次取り除かれ、残る移動局３ｘのＩＤ情報が
判定部５に送られる。In the ID detection station 4, the position signal F0 is received by the receiver 15 and sent to the first correlator 16a. The distance measuring code a of the distance measuring station 2a generated by the distance measuring code generator 17a is input to the correlator 16a. In the correlator 16a, the ranging code a in the position signal is specified by the correlation method, removed from the position signal, and sent to the second correlator 16b. Second and third correlators 16b, 1
In 6c, the distance measurement codes b and c are sequentially removed from the position signal by the same process, and the ID information of the remaining mobile station 3x is sent to the determination unit 5.
【００４３】判定部５は、上記距離情報とＩＤ情報とを
入力し、各測距局２a ，２ｂ，２ｃの位置との関係から
移動局３ｘの位置を特定することができる。The determination unit 5 can input the distance information and the ID information and specify the position of the mobile station 3x from the relationship with the positions of the distance measuring stations 2a, 2b and 2c.
【００４４】上記確率発生器１４ｘ，１４ｙの作用によ
って、複数の移動局３ｘ，３ｙが交互に位置信号を発信
し、判定部５が短い時間で移動局３ｘ，３ｙのＩＤ情報
と位置を特定するので、見かけ上複数の移動局の位置を
同時に把握することができる。By the action of the probability generators 14x and 14y, the plurality of mobile stations 3x and 3y alternately transmit the position signals, and the judging section 5 specifies the ID information and the position of the mobile stations 3x and 3y in a short time. Therefore, the positions of a plurality of mobile stations can be apparently grasped at the same time.
【００４５】図２及び図３は、測距符号ａ，ｂ，ｃが多
重化演算器１２ｘ，１２ｙによって多重化され、位置信
号として返送された後に相関の手法によって特定される
までの処理を説明している。FIGS. 2 and 3 explain the processing until the distance measurement codes a, b and c are multiplexed by the multiplexing calculators 12x and 12y and returned as position signals and then specified by the correlation method. is doing.
【００４６】図２に示すように、測距符号ａ，ｂ，ｃ
は、それぞれ符号長２m −１，２n −１，２r −１を有
し、測距信号Ｆ1 ，Ｆ2 ，Ｆ3 を介して多重化演算器１
２ｘ，１２ｙに送られ、この多重化演算器１２ｘ，１２
ｙで多重化される。この多重化された信号は、具体的に
は、測距符号ａ，ｂ，ｃの排他的論理和であり、符号長
（２m −１）×（２n −１）×（２r −１）を有してい
る。多重化された信号は、前記符号長において、各測距
符号ａ，ｂ，ｃあるいはＩＤ信号ｘ，ｙと弱い相関性を
有している。この多重化された信号は、位置信号Ｆ0 に
乗せられて測距局２a ，２ｂ，２ｃに返送される。測距
局２a ，２ｂ，２ｃでは、位置信号Ｆ0 と測距符号ａ，
ｂ，ｃが比較され、相関がもっとも大きくなる位置が求
められ、その位相差から電波の往復時間が算出される。As shown in FIG. 2, distance measuring codes a, b, c
Have code lengths of 2 m −1, 2 n −1, 2 r −1, respectively, and are multiplexed via the ranging signals F 1, F 2, F 3
2x, 12y, and the multiplex calculators 12x, 12y
multiplexed with y. This multiplexed signal is specifically the exclusive OR of the ranging codes a, b and c, and has a code length (2 m −1) × (2 n −1) × (2 r −1). )have. The multiplexed signal has a weak correlation with each of the ranging codes a, b, c or the ID signals x, y in the code length. The multiplexed signal is carried on the position signal F0 and returned to the distance measuring stations 2a, 2b and 2c. In the distance measuring stations 2a, 2b, 2c, the position signal F0 and the distance measuring code a,
b and c are compared with each other to find a position where the correlation is greatest, and the round trip time of the radio wave is calculated from the phase difference.
【００４７】図３は、上記相関の方法を説明した図であ
る。図３に示すように、相関の処理をする装置（距離計
数器９ａ，９ｂ，９ｃあるいは相関器１６ａ，１６ｂ，
１６ｃ）の内部には、測距符号長を有する一対のシフト
レジスタ(1),(2) が備えられており、受信信号（位置信
号Ｆ0 ）の一部は一つシフトレジスタ(1) に記録され、
測距符号（ａ，ｂ，ｃ）は他のシフトレジスタ(2) に記
録される。次に両シフトレジスタの符号は比較され、符
号の一致／不一致の数（相関）が累積される。次にシフ
トレジスタ(2) に記録された測距符号（ａ，ｂ，ｃ）の
符号を、図に示すように、逐次１ビット分ずらして相関
性を調べる。すべての符号についてシフトさせ、相関が
もっとも大きくなる位置が、受信信号中に含まれた測距
符号の位置を示しており、このビットの位相差から電波
の往復時間が算出されるのである。FIG. 3 is a diagram for explaining the above correlation method. As shown in FIG. 3, a device for performing correlation processing (distance counters 9a, 9b, 9c or correlators 16a, 16b,
16c) is provided with a pair of shift registers (1) and (2) having a ranging code length, and a part of the received signal (position signal F0) is recorded in one shift register (1). Is
The distance measuring codes (a, b, c) are recorded in another shift register (2). Next, the codes of both shift registers are compared, and the number of code matching / mismatching (correlation) is accumulated. Next, the codes of the distance measurement codes (a, b, c) recorded in the shift register (2) are sequentially shifted by one bit as shown in the figure, and the correlation is examined. The position where the correlation is maximized by shifting all the codes indicates the position of the distance measurement code included in the received signal, and the round-trip time of the radio wave is calculated from the phase difference of these bits.
【００４８】このように、本発明の移動局位置特定装置
１によれば、移動局３ｘ，３ｙが測距信号を多重化して
一つの送信器１３ｘ，１３ｙによって送信し、測距局２
a ，２ｂ，２ｃ側がこの多重化された信号から自己の測
距符号を特定して電波の往復時間を算出するので、移動
局側の送信器の数が少なくなり、装置の構成を簡素化す
ることができる。また、受送信に使用する電波周波数バ
ンドが簡略化され、効率よく電波を利用することができ
る。As described above, according to the mobile station position specifying device 1 of the present invention, the mobile stations 3x and 3y multiplex the ranging signals and transmit them by one transmitter 13x and 13y.
Since the a, 2b, and 2c side calculates the round trip time of the radio wave by specifying its own ranging code from the multiplexed signal, the number of transmitters on the mobile station side is reduced and the device configuration is simplified. be able to. Further, the radio frequency band used for reception and transmission is simplified, and radio waves can be used efficiently.
【００４９】さらに、移動局のＩＤ信号を位置信号に多
重化し、位置信号の受信側にそのＩＤ信号を抽出するＩ
Ｄ検知局を設けることにより、位置情報とともに発信源
の移動局を特定できる。Further, the ID signal of the mobile station is multiplexed with the position signal, and the ID signal is extracted at the receiving side of the position signal I
By providing the D detection station, the mobile station of the transmission source can be specified together with the position information.
【００５０】これにより、複数の移動局が同一時間帯・
同一領域内で移動する場合、各移動局に送信時間が互い
に干渉しないように制御する確率発生器を設けることに
より、同一周波数バンドの位置信号を使用して複数の移
動局の位置をほぼ同時に把握することができる。As a result, a plurality of mobile stations can
When moving within the same area, each mobile station is equipped with a probability generator that controls the transmission times so that they do not interfere with each other, and the position signals of the same frequency band are used to determine the positions of multiple mobile stations almost simultaneously. can do.
【００５１】[0051]
【発明の効果】上記説明から明らかなように、本発明の
移動局位置特定装置は、測距局と移動局とを有し、移動
局が多重化演算器によって各測距局の測距信号を多重化
して共通の位置信号として測距局に返送し、各測距局は
多重化された位置信号から自己の測距信号を検出し、電
波の往復時間を計算するので、各移動局の送信器は一つ
で足り、構成が簡単な移動局位置特定装置を得ることが
できる。As is apparent from the above description, the mobile station position specifying device of the present invention has a distance measuring station and a mobile station, and the mobile station uses the multiplexing arithmetic unit to measure the distance measuring signal of each distance measuring station. Are returned to the ranging station as a common position signal, and each ranging station detects its own ranging signal from the multiplexed position signal and calculates the round-trip time of the radio wave, so each mobile station Only one transmitter is required, and a mobile station position specifying device having a simple structure can be obtained.
【００５２】また、移動局の位置信号は一つに多重化さ
れているので、使用する電波周波数バンドが小さく、効
率よく電波を利用することができる。Since the position signals of the mobile stations are multiplexed together, the radio frequency band used is small and radio waves can be used efficiently.
【００５３】さらに、複数の移動局の位置を特定する本
発明の移動局位置特定装置によれば、各移動局が移動局
ＩＤ生成器を有し、この移動局ＩＤ生成器によってその
移動局を特定するＩＤ信号を発生し、このＩＤ信号を多
重化によって位置信号に含ませることができ、一方、位
置を特定する側はＩＤ検知局を備え、このＩＤ検知局に
よってＩＤ情報を抽出することができるので、移動局の
ＩＤと位置を同時に特定することができる。Further, according to the mobile station position specifying device of the present invention for specifying the positions of a plurality of mobile stations, each mobile station has a mobile station ID generator, and the mobile station ID generator identifies the mobile station. It is possible to generate an ID signal for specifying and include this ID signal in the position signal by multiplexing, while the position specifying side is provided with an ID detection station, and the ID information can be extracted by this ID detection station. Therefore, the ID and position of the mobile station can be specified at the same time.
【００５４】この複数の移動局の位置を特定する移動局
位置特定装置では、各移動局の送信が互いに干渉しない
ように送信器の送信タイミングを決定する確率発生器を
有している。この確率発生器の作用によって、各移動局
は、同一の電波周波数バンド内で短時間に一つずつ位置
信号を送信することができる。The mobile station position specifying apparatus for specifying the positions of a plurality of mobile stations has a probability generator that determines the transmission timing of the transmitter so that the transmissions of the mobile stations do not interfere with each other. By the action of this probability generator, each mobile station can transmit a position signal one by one in a short time within the same radio frequency band.
【００５５】これによって、構造が簡単な複数の移動局
を有し、少ない電波周波数バンドの使用によって、これ
ら複数の移動局の位置をほぼ同時に特定することができ
る移動局位置特定装置を得ることができる。As a result, it is possible to obtain a mobile station position specifying device which has a plurality of mobile stations with a simple structure and can specify the positions of the plurality of mobile stations almost simultaneously by using a small radio frequency band. it can.
【図１】本発明の移動局位置特定装置の構成を示した
図。FIG. 1 is a diagram showing a configuration of a mobile station position specifying device of the present invention.
【図２】複数の測距信号を多重化し、多重化された位置
信号から測距符号を抽出する流れを示した図。FIG. 2 is a diagram showing a flow of multiplexing a plurality of distance measurement signals and extracting a distance measurement code from the multiplexed position signal.
【図３】多重化された位置信号から相関の方法によって
測距符号の位置を特定する方法を具体的に説明した図。FIG. 3 is a diagram specifically illustrating a method of specifying the position of a ranging code from a multiplexed position signal by a correlation method.
【図４】従来の移動局位置特定装置の作用を概念的に示
した図。FIG. 4 is a diagram conceptually showing the operation of a conventional mobile station position specifying device.
【図５】従来の移動局位置特定装置の構成を示した図。FIG. 5 is a diagram showing a configuration of a conventional mobile station position specifying device.
１ 移動局位置特定装置 ２ 測距局 ３ 移動局 ４ ＩＤ検知局 ５ 判定部 ６ 測距符号生成器 ７ 送信器 ８ 受信器 ９ 距離計数器 １０ 移動局ＩＤ生成器 １１ 受信器 １２ 多重化演算器 １３ 送信器 １４ 確率発生器 １５ 受信器 １６ 相関器 １７ 測距符号生成器 1 mobile station position specifying device 2 ranging station 3 mobile station 4 ID detecting station 5 judging section 6 ranging code generator 7 transmitter 8 receiver 9 distance counter 10 mobile station ID generator 11 receiver 12 multiplexing calculator 13 transmitter 14 probability generator 15 receiver 16 correlator 17 ranging code generator
Claims (3)
動局と、測距信号を発信して、位置信号が返送されるま
での時間から前記移動局までの距離を計測する複数の測
距局と、各測距局の位置と各測距局と移動局間の距離か
ら移動局の位置を特定する判定部とを有する移動局位置
特定装置において、 前記移動局は、前記各測距局の測距信号を受信する複数
の受信器と、各測距局の測距信号を多重化して位置信号
を生成する多重化演算器と、この位置信号を各測距局へ
返送する送信器とを有し、 前記各測距局は、各測距局に固有の測距符号を生成する
測距符号生成器と、この測距符号を電波に乗せて測距信
号として送信する送信器と、前記移動局からの位置信号
を受信する受信器と、その測距局の固有の測距符号と位
置信号との相関をとって、受送信にかかった時間を算出
し、前記移動局までの距離を算出する距離計数器とを有
することを特徴とする移動局位置特定装置。1. A mobile station that receives a distance measurement signal and returns a position signal, and a plurality of mobile stations that transmit the distance measurement signal and measure the distance to the mobile station from the time until the position signal is returned. In a mobile station position identifying device having a ranging station and a determining unit that identifies the position of each ranging station and the position of the mobile station from the distance between each ranging station and the mobile station, the mobile station is Multiple receivers that receive ranging signals from ranging stations, a multiplexing calculator that multiplexes the ranging signals from each ranging station to generate a position signal, and a transmission that returns this position signal to each ranging station And each of the distance measuring stations includes a distance measuring code generator that generates a distance measuring code unique to each distance measuring station, and a transmitter that transmits the distance measuring code on a radio wave as a distance measuring signal. And a receiver for receiving the position signal from the mobile station, and the correlation between the position detection signal specific to the distance measuring station and the position signal. Calculating the time taken receiving and transmitting, the mobile station localization device characterized by having a distance counter for calculating a distance to the mobile station.
数の移動局と、測距信号を発信して、位置信号が返送さ
れるまでの時間から送信源の移動局までの距離を計測す
る複数の測距局と、送信源の移動局を特定するＩＤ検知
局と、各測距局の位置と移動局のＩＤ情報と各測距局と
移動局間の距離から各移動局の位置を特定する判定部と
を有する移動局位置特定装置において、 前記各移動局は、その移動局に固有のＩＤ信号を生成す
る移動局ＩＤ生成器と、前記各測距局の測距信号を受信
する複数の受信器と、各測距局の測距信号と前記ＩＤ信
号を多重化して位置信号を生成する多重化演算器と、こ
の位置信号を返送する送信器と、他の移動局の送信と干
渉しないように確率的に送信タイミングを決定する確率
発生器とを有し、 前記各測距局は、各測距局に固有の測距符号を生成する
測距符号生成器と、この測距符号を電波に乗せて測距信
号として送信する送信器と、前記移動局からの位置信号
を受信する受信器と、その測距局の固有の測距符号と位
置信号との相関をとって、受送信にかかった時間を算出
し、送信源の移動局までの距離を算出する距離計数器と
を有し、 前記ＩＤ検知局は、移動局からの位置信号を受信する受
信器と、各測距局の測距符号を生成する測距符号生成器
と、各測距局の測距符号と位置信号との相関をとって、
位置信号から各測距局の測距符号を排除してＩＤ情報を
抽出する相関器とを有することを特徴とする移動局位置
特定装置。2. A plurality of mobile stations that receive a distance measurement signal and send back a position signal, and a distance from the time until the position signal is sent back after sending the distance measurement signal to the mobile station of the transmission source. A plurality of distance measuring stations to be measured, an ID detecting station that identifies the mobile station of the transmission source, the position of each distance measuring station, the mobile station ID information, and the distance between each distance measuring station and the mobile station. In a mobile station position specifying device having a determining unit for specifying a position, each mobile station generates a mobile station ID generator that generates an ID signal unique to the mobile station and a ranging signal of each ranging station. A plurality of receivers for receiving, a multiplexing operator for multiplexing the ranging signal of each ranging station and the ID signal to generate a position signal, a transmitter for returning the position signal, and a mobile station for another mobile station. A probability generator that stochastically determines transmission timing so as not to interfere with transmission, and each of the ranging stations , A ranging code generator for generating a ranging code unique to each ranging station, a transmitter for transmitting the ranging code on a radio wave as a ranging signal, and a position signal from the mobile station A receiver and a distance counter that calculates the distance to the mobile station of the transmission source by calculating the time required for transmission and reception by correlating the distance measurement code unique to that distance measurement station and the position signal. The ID detecting station has a receiver for receiving a position signal from a mobile station, a distance measuring code generator for generating a distance measuring code of each distance measuring station, and a distance measuring code and position of each distance measuring station. Correlating with the signal,
A mobile station position specifying device, comprising: a correlator that removes the ranging code of each ranging station from position signals to extract ID information.
あるいは各測距信号とＩＤ信号に対して排他的論理和演
算を施して多重化するように構成されていることを特徴
とする請求項１あるいは請求項２に記載の移動局位置特
定装置。3. The multiplexing arithmetic unit is configured to perform an exclusive OR operation on the ranging signals of each ranging station or each ranging signal and the ID signal for multiplexing. The mobile station position specifying device according to claim 1 or 2, which is characterized.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP28239093A JP3318078B2 (en) | 1993-11-11 | 1993-11-11 | Mobile station location device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP28239093A JP3318078B2 (en) | 1993-11-11 | 1993-11-11 | Mobile station location device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH07135679A true JPH07135679A (en) | 1995-05-23 |
| JP3318078B2 JP3318078B2 (en) | 2002-08-26 |
Family
ID=17651787
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP28239093A Expired - Lifetime JP3318078B2 (en) | 1993-11-11 | 1993-11-11 | Mobile station location device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3318078B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101977172B (en) * | 2010-10-18 | 2013-02-06 | 北京邮电大学 | Broadcast positioning signal generation method, positioning method and device |
-
1993
- 1993-11-11 JP JP28239093A patent/JP3318078B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JP3318078B2 (en) | 2002-08-26 |
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