JPH09304501A - Position measuring system of potable radio equipment - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a position measuring system of portable radio equipment, in which a portable ratio equipment that is less in cost, weight and volume, and advantageous in carriage and movement, can be utilized. SOLUTION: A plurality of base stations, which perform radio communication with a portable radio equipment 2 and measure the arriving angle of the received wave at the same time, is provided. At the same time, the arriving angle of the received wave from the portable radio equipment 2 is measured by only a part of the base station, which is selected based on the receiving sensitivity of the identified signal measured by the base station based on the output from a coarse position measuring means 6. A precise position measuring/computing means 13, which obtains the position of the portable radio equipment based on the arriving angle, is provided. In comparison with the case, wherein the position is measured by GPS by mounting a GPS receiver on the portable radio equipment, the portable radio equipment becomes inexpensive, light and compact, the existing radio equipment can be intently used and the position can be measured in the case, wherein the portable ratio equipment cannot observe a satellite directly. Furthermore, in comparison with the case, wherein the position measurement is performed simply based on the arriving signal from a plurality of the base stations, the occupied frequency bands of the radio waves become less.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mobile radio positioning system suitable for use in a system for searching for a missing person or the like using cellular mobile communication.

[0002]

2. Description of the Related Art As the aging phenomenon of society progresses, wandering of demented elderly people has become a problem, and a system for searching for wandering elderly people easily in a short time is desired. Also,
The same applies to the search for missing persons, lost persons, etc., who have become trapped under houses and earth and sand during disasters such as earthquakes. A system for searching for such a missing person will be referred to as a rescue system here.

As a rescue system, there is simply a method of measuring the direction of arrival of radio waves from a portable transmitter possessed by a missing person at a plurality of base stations and positioning the position of the portable transmitter by the principle of triangulation. It is considered. However, in this conventional example, when the missing person's search area is relatively large, it is necessary to have all the base stations measure angles because the position of the mobile transmitter is unknown. In order to do so, a means for distinguishing a plurality of portable transmitters is needed. For example, when distinguishing by frequency, since it is necessary to simply prepare frequency bands for the number of mobile transmitters, it is actually difficult to realize from the viewpoint of effective use of limited frequency resources. The same applies when distinguishing mobile transmitters by time and code.

On the other hand, a cellular mobile communication system, such as a mobile phone represented by a PHS (Personal Handy System), has a plurality of base stations and communicates with the nearest base station and a terminal mounted on the mobile body. It has become popular. As a conventional technique, each portable wireless device itself uses GPS (Global Position
A method of performing positioning using an existing positioning system such as an ioning system) and transmitting the positioning result to a fixed terminal of a searcher or another portable wireless device through mobile communication means is considered.

Regarding the above-mentioned conventional rescue system,
This will be described with reference to FIGS. 14 to 16. FIG. 14 is an overall configuration diagram showing a conventional rescue system. FIG.
In the above, 2 is a portable wireless device carried by the missing person,
3A to 3D are fixed base stations (hereinafter, simply referred to as base stations) that transmit and receive radio waves to and from the portable wireless device 2 in their own communication service areas (cells) 8a to 8d, and 4 is a communication line a to. Base station 3 via d (collectively 3A to 3D)
Switch 5 connected to a fixed terminal, 5 a fixed terminal, 6 rough positioning means connected to a communication line, 7 storage means, 9 an uplink wave from the portable radio 2 to the base station 3, 10 from the base station 3 Downlink wave to portable radio 2, 11 is GPS satellite, 1
Reference numeral 2 is a transmission wave of the GPS satellite 11.

Here, as an example of the internal configuration of the portable wireless device 2 in the conventional rescue system, the configuration shown in FIG. 15 is provided. In FIG. 15, reference numeral 2a is a communication antenna, 2b is a transmission / reception switch formed of a transmission / reception switch or a duplexer, 2c is a receiver, 2d is an output device such as a speaker or display, 2e is a microphone, a dial,
An input device such as a keyboard, 2f is a transmission signal changeover switch, 2g is a transmitter, 2h is ID signal generating means, 2i is a precise positioning command decoder, 2j is a GPS antenna, and 2j.
k is a GPS receiver, 2l is a GPS positioning calculator, and 2m is a position signal.

Further, the base station 3 in the conventional rescue system has the configuration shown in FIG. 16 as an example of its internal configuration. In FIG. 16, 3a is a communication antenna, 3b is a transmission / reception switch formed of a transmission / reception changeover switch or a duplexer, 3c is a receiver, 3d is a receiver, and 3e is a signal transmitted from the communication lines a to d as transmission signals. A modem for converting or transmitting a received signal through the communication lines a to d.

The operation of the conventional rescue system having the above structure will be described below. The fixed terminal 5 communicates with the portable wireless device 2 via the exchange 4-communication lines a to d-base station 3. The base station 3 and the portable wireless device 2 communicate with each other by radio waves. The portable wireless device 2 includes a base station 3-communication lines a to d.
-Switch 4-communication lines a to d-There may be a case of performing communication with another portable wireless device via the base station 3.

In the portable radio device 2, the transmission signal changeover switch 2f connects the ID signal generating means 2h and the transmitter 2g when a switch (not shown) is turned on, as in ordinary cellular mobile communication. An ID signal unique to the portable wireless device 2 is generated by the ID signal generating means 2h and transmitted from the antenna 2a. The rough positioning means 6 detects the base station closest to the portable wireless device 2 by causing the base stations 3A, 3B, 3C, 3D to measure the reception intensity of this radio wave. That is, the area where the portable wireless device 2 is present is detected (rough positioning), and the rough positioning information is stored in the storage means 7. Normal,
When making a call from the fixed terminal 5 to the mobile wireless device 2, the exchange 4 refers to the rough positioning information of the mobile wireless device 2 stored in the storage unit 7 and selects the base station 3 closest to the mobile wireless device 2. Then, the fixed terminal 5 is connected.

When searching for a missing person (rescue mode), a precise positioning command is transmitted from the fixed terminal 5 or the like operated by the searcher to the portable wireless device 2. When the precise positioning command decoder 2i in the portable wireless device 2 receives the precise positioning command, it activates the GPS receiver 2k and the GPS positioning calculator 2l, and based on the propagation time of the radio wave 12 transmitted from the plurality of GPS satellites 11. The position of the portable wireless device 2 is measured. Further, the transmission signal changeover switch 2f is connected to the GPS positioning computer 21 to transmit the position signal 2m. The base station 3 sends the received position signal to the original fixed terminal 5, and the searcher can know the position of the portable wireless device 2.

[0011]

In the rescue system using the conventional GPS satellite 11 described above, the positioning accuracy is determined by using the GPS satellite 11.
In order to perform positioning, the mobile wireless device 2 needs to include a GPS antenna 2j, a GPS receiver 2k, and a GPS positioning calculator 21. Therefore, the cost, weight, and
This will increase the volume, making it difficult to move and economically disadvantageous.
With current technology, it is actually quite difficult for an missing person, such as an elderly person or a victim, to carry such an expensive, heavy, and bulky terminal all the time.

The GPS antenna 2 of the portable radio 2
Since j needs to be in a position where at least 3 to 4 GPS satellites can be directly seen at the same time, the portable wireless device 2, that is, the missing person is indoors, underground, a tunnel, a valley of a building in an urban area, or an earthquake occurs. When it is under the house or earth and sand due to such reasons, it becomes impossible to search.

As described above, the conventional rescue system has a problem that the cost, weight and volume of the portable wireless device 2 increase, which is inconvenient to carry and move the terminal and is expensive. In addition, there is a problem that it does not work when the missing person is indoors, underground, in a tunnel, in a valley of a building in an urban area, or when it is laid under a house or earth and sand due to an earthquake or the like.

The present invention has been made in order to solve the above-mentioned problems of the conventional example, and is a cheap, light and compact portable radio that does not burden the user to carry or move. The purpose of the present invention is to obtain a positioning system for a portable wireless device that can be searched even when it is in the valley of an underground building, a tunnel, an urban building, or a house or earth and sand under an earthquake.

[0015]

To achieve the above object, a positioning system for a portable wireless device according to the present invention includes a portable wireless device and a wireless device which is placed separately from each other and communicates with the portable wireless device. And a plurality of base stations having angle measuring signal processing means for measuring the angle of arrival of the transmitted wave from the portable wireless device, and the plurality of base stations connected via a communication line to the portable wireless device. A coarse positioning processing unit that senses and stores a close base station and a base station that is connected to the plurality of base stations via a communication line and that is closest to the portable wireless device based on the output of the rough positioning processing unit. In a positioning system for a portable wireless device including an exchange that is selectively connected to a fixed terminal, transmission from the portable wireless device only to a base station near the portable wireless device selected based on the output of the rough positioning processing means. The angle of arrival of the waves Is a constant, is characterized in that it comprises a fine positioning processing means for determining the position of the portable wireless device based on the measurement result.

Further, the plurality of base stations include a plurality of element antennas, a plurality of receivers respectively connected to the plurality of element antennas for receiving processing, and a space based on output signals of the plurality of receivers. MUS using smoothing method
The present invention is characterized by including angle measurement signal processing means for measuring the angle of a direct multipath wave according to the IC angle measurement method or the maximum likelihood estimation angle measurement method.

Further, a positioning system for a portable wireless device according to another aspect of the invention includes a portable wireless device, a plurality of base stations each having a wireless device arranged to be isolated from each other and communicating with the portable wireless device, and the plurality of base stations. And a coarse positioning processing means connected to the base station via a communication line to detect and store the base station closest to the portable wireless device, and the coarse positioning processing means connected to the plurality of base stations via the communication line. In a positioning system for a mobile wireless device, which comprises a switch for selecting a base station closest to the mobile wireless device based on the output of the rough positioning processing means and connecting it to a fixed terminal, arrival of a transmission wave from the mobile wireless device. It has an angle measurement processing means for measuring an angle and a wireless device for communicating with the base station, moves to the vicinity of the base station selected based on the output of the rough positioning processing means, and moves away from each other near the base station. Carry the above at more than one point Measuring the angle of arrival of the transmitted wave from the radio, it is characterized in that a mobile search station to determine the position of the mobile wireless device based on the measurement result.

Further, the mobile search station is characterized in that the position of the mobile search station is obtained based on the measurement of the arrival angles of the radio waves transmitted by the plurality of base stations.

Further, the portable wireless device is characterized in that it is provided with a sound wave generating means for generating a sound wave based on the reception of a precise positioning command command from the base station.

Further, the portable wireless device is characterized in that it is built in clothes, shoes, a watch, or a decorative article.

Further, a positioning system for a portable wireless device according to still another aspect of the present invention includes a portable wireless device, a plurality of base stations each having a wireless device which is arranged separately from each other and communicates with the portable wireless device, Coarse positioning processing means connected to a plurality of base stations via a communication line and detecting and storing a base station closest to the portable wireless device, and connected to the plurality of base stations via a communication line. In a positioning system for a mobile wireless device including an exchange that selects a base station closest to the mobile wireless device based on the output of the rough positioning processing means, a wireless device that communicates with the base station and a mobile wireless device to search for A searcher ID signal memory that stores an ID signal unique to the machine, and a communication control signal is transmitted between the base station and the mobile wireless device when a telephone number to the mobile wireless device to be searched is dialed,
It is determined whether or not there is a portable wireless device to be searched for in the communication area of the base station based on the determination as to whether or not the communication control signal includes the ID signal stored in the searcher ID signal memory. It is characterized by comprising a mobile search station having a control means for judging.

Further, the base station, the exchange, and the portable wireless device constitute a personal handy system, and the mobile search station is referred to when communicating with any base station of the personal handy system. ID of
The control means further has a local station ID signal memory for storing a signal, and the control means refers to the local station ID memory to communicate with the wireless portable device to be searched for via the base station to obtain the searcher ID signal. The communication wave between the base station and the portable wireless device is intercepted by referring to the memory.

The mobile search station also includes a control signal decoding means for decoding a communication control signal from the base station to the portable wireless device to be searched, and a measuring unit for measuring the arrival angle of the transmitted wave of the portable wireless device to be searched. It further has an angle processing means and an azimuth display means for displaying the arrival azimuth measured by the angle measurement processing means, and the control means of the portable radio device to be searched which is decoded by the control signal decoding means. It is characterized in that only the angle of arrival of the transmission wave of the portable wireless device to be searched for is measured by the angle measurement processing means in synchronization with the frequency of the transmission wave and the transmission timing.

[0024]

BEST MODE FOR CARRYING OUT THE INVENTION

Embodiment 1. Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is an overall configuration diagram showing a positioning system for a portable wireless device according to the first embodiment. In FIG.
The same parts as those of the conventional example shown in FIG. 14 are designated by the same reference numerals and the description thereof will be omitted. As a new code, 1 is a generic name for 1A to 1D, 1 is a base station having a direction finding function which is arranged separately from each other, and 13 is from the mobile wireless device 2 to only the base station to which the mobile wireless device 2 is closest. This is a precise positioning calculation means for measuring the angle of arrival of the received wave and determining the position of the portable wireless device 2 based on the angle of arrival.

Here, as the configuration of the portable wireless device 2 that can be used in the first embodiment, the configuration shown in FIG. 2 is provided. That is, as the portable wireless device 2 that can be used in the first embodiment, the GPS antenna 2j and the GPS receiver 2 in the configuration of the conventional example shown in FIG. 15 are used.
k, the GPS positioning calculator 2l is not provided, and the configuration without the GPS positioning function, the communication antenna 2a for communication with the base station 1, the transmission / reception switch 2b formed of a transmission / reception changeover switch or a duplexer, a receiver 2c, Output device 2d such as speaker or display, microphone, dial,
An input device 2e such as a keyboard, a transmission signal changeover switch 2f, a transmitter 2g, an ID signal generating means 2h, and a precise positioning command decoder 2i are provided.

Further, the base station 1 according to the first embodiment has the internal configuration shown in FIG. That is, as the base station 1 used in this Embodiment 1,
As the communication antenna having the configuration of the conventional example shown in FIG. 16, element antennas 1a1, 1a2, ...
, 1 am, and receivers 1d1, 1d2, ..., 1dm connected to each element antenna and corresponding to the frequency band of the communication wave are provided as receivers. Further, in addition to the configuration of the conventional example shown in FIG. 16, a combiner 1f for combining outputs x1, x2, ..., Xm of each receiver and outputting a combined reception signal y, and an output x1 of each receiver. , X2, ...
.., xm, and an angle measurement processing means 1g for measuring the arrival angle of the transmission wave from the portable wireless device 2 and outputting the radio wave arrival angle .theta., And the outputs of the combiner 1f and the angle measurement processing means 1g are It is output to the modem 1e. Note that 1b and 1c are shown in FIG.
The transmission / reception switch and the transmitter are the same transmission / reception changeover switches or duplexers as in the conventional example shown in FIG.

Next, the first embodiment having the above-mentioned structure
The operation related to is explained. First, the operation of the base station 1 will be described. Each element antenna 1a1, 1a2, ..., 1
Receivers 1d1, 1d2, ..., 1dm captured by am
Received signals x1, x2, ..., Xm amplified and detected by
Are combined by the combiner 1f to form a combined reception signal y, which is sent to the exchange 4 side via the modem 1e and the communication lines a to d. In parallel with this, the angle measurement processing means 1g receives the received signal x
1, x2, ..., Xm are input, and the arrival angle θ of the communication radio wave 9 coming from the portable wireless device 2 is calculated.

As the angle measurement method used by the angle measurement processing means 1g, a monopulse or the like can be used when there is only one portable wireless device 2 (in the same frequency band) as a communication target. Even when there are a plurality of portable wireless devices 2, for example, a known document: Schmidt, “Multiple Emitter Loc
ation and Signal Parameter Estimation ", IEEE Tran
s., AP-34,3, pp. MUSIC described in 276-30 (1986)
Interference in the same frequency band (m
-1) Since the radio waves of the waves can be separated and the angle can be measured, the azimuth θ can be estimated independently for each portable wireless device. Even when installed in a multi-path environment in a building street or indoors, for example, publicly known documents: Shan, Wax, Kailath, “On Spatial
Smoothing for Direction-of-Arrival Estimation of
Coherent Signals ", IEEE Trans., ASSP-33, 4, pp.806
If the MUSIC algorithm using the spatial smoothing preprocessing described in -811 (1985) is used, the azimuth θ can be estimated even in a multipath environment. Furthermore, publicly known documents: Ziskind, Wax, “Maximum Likelihood Location
of Multiple Sources by Alternating Projection ", IE
EE Trans., ASSP-36, 10, pp. 1553-1560, (Oct. 1986)
The azimuth θ can be estimated even in a multipath environment by using the maximum-likelihood estimation angle-measuring algorithm described in (1).

Next, the operation of the entire structure shown in FIG. 1 will be described. Normally, when a call is made from the fixed terminal 5 to the mobile wireless device 2, the exchange 4 refers to the rough positioning information of the mobile wireless device 2 stored in the storage unit 7 and calls the mobile wireless device as in the conventional example. The nearest base station of 2, for example, the base station 1c is selected and connected to the fixed terminal 5. That is, the portable wireless device 2 connects the ID signal generating means 2h and the transmitter 2g by the transmission signal changeover switch 2f, and the ID signal unique to this portable wireless device 2 is generated by the ID signal generating means 2h and transmitted from the antenna 2a. Therefore, the rough positioning means 6 detects the base station 1A, 1B, 1C, 1D of the reception intensity of this radio wave to detect the base station closest to the mobile wireless device 2 and to detect the mobile wireless device 2. Is detected (rough positioning), and the rough positioning information is stored in the storage means 7. The exchange 4 refers to the rough positioning information of the mobile wireless device 2 stored in the storage means 7, selects the base station 1 closest to the mobile wireless device 2, and connects to the fixed terminal 5.

When searching for a missing person (rescue mode)
For example, the precise positioning command is transmitted to the portable wireless device 2 from the fixed terminal 5 or the like operated by the searcher. Up to this point, it is the same as the conventional example. When the precise positioning command decoder 2i in the portable wireless device 2 receives the precise positioning command, the transmission signal changeover switch 2f connects the ID signal generating means 2h and the transmitter 2g, and the ID signal unique to this portable wireless device 2 is ID signal. It is generated by the generation means 2h and transmitted from the antenna 2a.

At this time, the base station 1 near the portable radio 2
A, 1C are caused to measure the arrival direction θ of the uplink wave 9 from the portable wireless device 2. The selection of the base station for the angle measurement is determined by referring to the rough positioning position storage means 7 as described above. The arrival angle θ calculated by each base station 1 is
It is sent to the precise positioning calculation means 13 via the exchange 4, and the precise positioning calculation means 13 estimates the position of the portable wireless device 2 from the principle of triangulation based on the arrival angle θ and the base station position. The position of the portable wireless device 2 is finally set to the fixed terminal 5 via the exchange 4.
Sent to the searcher, where they can find the location of the missing person. Other operations are similar to those of the conventional example shown in FIG.

In the first embodiment, the position of the portable wireless device 2 is the communication service area 8 (8a-8) of the plurality of base stations 1.
The number of base stations that can be measured is 1
In some cases, there is only one, and positioning by triangulation is not possible.
If the size of the communication service area 8 is relatively small,
Even if the position of the portable wireless device 2 cannot be perfectly measured, it is often sufficient for practical use if it is known from the azimuth line starting from the base station 1 that can measure the angle. In particular, if the map information and the location history of the missing person are combined, the missing person can be searched easily. Further, such a problem can be avoided by instructing from the base station 1 side and increasing the transmission power of the portable wireless device 2 only at the moment of measuring the angle.

In the first embodiment, the portable wireless device 2 has the ID signal generating means 2h, and when the precise positioning command decoder 31 in the portable wireless device 2 receives the precise positioning command, the ID signal generating means 2h. When the generated ID signal is transmitted, but there is no other portable wireless device in the same frequency band or near area, or if it is controlled not to do so,
It is also possible to simply switch on the transmitter and simply transmit noise or the like.

In the first embodiment, the base station 1 does not particularly limit the timing of the angle measurement, but only when the precise positioning command is sent from the fixed terminal 5 operated by the searcher. The base station 1 may execute the angle measuring process. Further, in the above-described first embodiment, a case has been described in which the combined reception signal y of all the receivers 1d1, 1d2, ..., 1dm is sent to the exchange 4 side as a communication reception signal. The combined output or the output of a receiver other than the one for angle measurement may be used as a reception signal for communication.

Further, in the above-described first embodiment, some of the receivers used only for the angle measuring process may be compatible with a frequency band narrower than the frequency band of the communication wave. Since these receivers having a narrow frequency band are generally inexpensive and have a relatively simple structure, the manufacturing cost, weight, and size of the base station 1 can be reduced. Further, in the internal configuration of the base station 1, a transmission / reception switch 1b such as a duplexer is provided, and the element antenna 1
Although a1 is used for both transmission and reception, another antenna may be provided only for transmission to separate transmission and reception. The element antenna of the portable wireless device 2 may be provided separately for transmission and reception.

Further, in the first embodiment, each base station 1
Although the angle measurement processing means 3g is provided in each of the receivers 1d1, 1
d2, ..., 1 dm received signals x1, x2 ,.
All xm may be sent to the precise positioning calculation means 13 side, and the angle measurement processing may be made common. In the first embodiment,
The searcher issued a precise positioning command from the fixed terminal 5,
You may make a call from another portable wireless device. Further, the mobile wireless device 2 carried by the missing person may be provided with a switch for issuing a precise positioning command so that the missing person with normal consciousness himself can issue a precise positioning command to request rescue.

As described above, according to the first embodiment, it is possible to normally communicate with the portable wireless device 2 and to know the position of the missing person who carries the portable wireless device 2 in an emergency. At this time, the positioning of the mobile wireless device 2 is performed based on the information on the angle of arrival measured by the base station 1, so that the mobile wireless device 2 does not need a GPS receiver or the like. Therefore, the structure of the portable wireless device 2 becomes simpler. In particular, as shown in FIG. 2, the portable wireless device 2 can be produced at low cost and is highly feasible because a mobile phone such as a commercially available PHS, which is currently popular, can be used as it is.
Further, even when there is an obstacle between the mobile wireless device 2 and the GPS satellite and the line of sight cannot be obtained, the mobile wireless device 2 can be positioned. Furthermore, the occupied frequency band of the radio wave can be smaller than in the case where positioning is performed simply from the arrival angles of a plurality of base stations.

Further, since a plurality of base stations 1 perform angle measurement according to the MUSIC angle measuring method based on the spatial smoothing method or the maximum likelihood estimation angle measuring method, even when a missing person is in an urban area or indoor multipath environment. Positioning is possible.

Embodiment 2 Next, FIG. 4 shows the second embodiment.
It is a whole block diagram concerning. In FIG. 4, 41 is the same as in FIG.
In addition to the base station 3 (generic name of 3A to 3D) similar to the conventional example shown in FIG. 1, a mobile search station equipped with a movable direction search function is provided, and reference numeral 42 indicates a line from the mobile search station 41 to the base station 3. Uplink waves and 43 are downlink waves from the base station 3 to the mobile search station 41. Further, 44 is a rough positioning information searching means provided as a rough positioning processing means in addition to the rough positioning means 6, and the portable wireless device 2 to be searched by the mobile search station 41.
The search signal added when dialing is received through the base station 3 and the exchange 4, and the number of the communication service area 8 to which the portable wireless device 2 to be searched belongs, that is, the communication service area to which the portable wireless device 2 to be searched belongs 8 base stations 3 are selected and transmitted to the mobile search station 41. The other points are the same as those in the first embodiment, and the description thereof will be omitted. In addition, as an internal configuration of the portable wireless device 2, the first embodiment shown in FIG.
It has the same configuration as.

In the second embodiment, the mobile search station 41 has the internal structure shown in FIG. As shown in FIG. 5, the mobile search station 41, similar to the base station 1 according to the first embodiment, has element antennas 41a1, 41a2, ..., 41 arranged in an array as communication antennas.
am, a transmission / reception changeover switch 41b composed of a transmission / reception changeover switch or a duplexer, a transmitter 41c, and a receiver,
, 4dm, which is connected to each element antenna and corresponds to the frequency band of the communication wave, and angle measurement processing means 41g, an input device 41h such as a microphone / dial, a movement instruction means 41i, and a GPS. Antenna 41
j, GPS receiver 41k, GPS positioning calculator 41l, I
NS (Inertial Navigation System) positioning means 41m,
The display means 41n is provided.

The operation according to the second embodiment having the above configuration will be described below. Here, a case where a searcher carries (or rides with) the mobile search station 41 will be described. From the input device 41h of the mobile search station 41, for example, a special search number is added to the head and the number of the portable radio 2 of the missing person is dialed. This signal is transmitted to the base station 3 as the uplink wave 42 from the element antenna 41a1 via the transmitter 41c, and is transmitted to the rough positioning information retrieval means 44 via the communication lines a to d and the exchange 3. Coarse positioning information retrieval means 4
Reference numeral 4 indicates the general position of the mobile wireless device 2 corresponding to the transmitted mobile wireless device number, that is, the number of the communication service area 8 to which the mobile wireless device 2 belongs via the base station 3c closest to the mobile search station 41. The downlink wave 43 is transmitted to the mobile search station 41. The area number of the portable wireless device 2 received by the mobile search station 41 is displayed on the movement instruction means 41i.
The searcher sees this and moves to the communication service area 8c where the portable wireless device 2 exists.

After this, the input device 41h of the mobile search station 41
Transmits a precise positioning command to the portable wireless device 2. In the portable wireless device 2, when the precise positioning command decoder 2i receives the precise positioning command, the transmission signal changeover switch 2f is set to I.
The D signal generating means 2h and the transmitter 2g are connected to each other, and an ID signal peculiar to this portable wireless device is generated by the ID signal generating means 2h and transmitted as the downlink wave 9 from the antenna 2a. The mobile search station 41 measures the arrival direction θ of the downlink wave 9 in the same manner as in the first embodiment, and the result is measured by the GPS.
It is displayed on the display device 41n together with the position of the mobile search station 41 output by the positioning computer 41l or the INS positioning means 41m.

Further, the searcher, that is, the mobile search station 41.
Moves to another place in the communication service area 8c displayed on the movement instruction means 41i, and again measures the arrival direction θ of the downlink wave 9 from the portable wireless device 2 as described above,
It is displayed on the display device 41n together with the position of the mobile search station 41. When combined with the previous measurement result, the position of the mobile wireless device 2, that is, the missing person can be known by the principle of triangulation.

In the second embodiment, the case where the searcher carries the mobile search station 41 (or rides with him) has been described, but the searcher remotely operates the mobile search station 41 from the fixed terminal 5 or the like. I don't mind. However, in this case, the precise positioning command is transmitted from the base station side to the portable wireless device 2, and the angle measurement result output by the angle measurement processing means 41g, the mobile search station output by the GPS positioning computer 41l or the INS positioning means 41m. The position of is transmitted to the base station 3 side as an uplink wave 42 via the transmitter 41c.

The INS positioning means 41m complements the GPS positioning system when the mobile search station 41 moves to a location where the GPS satellite 11 is out of sight.
It may not be provided when the S satellite 11 has sufficient visibility. Further, the GPS positioning system is removed, and the INS positioning means 41
Only m may be used. In addition, the INS positioning means 41
m or using the Loran navigation system instead of the GPS positioning system as long as the positioning accuracy is satisfied.

In the second embodiment, the position of the mobile search station is measured by using the INS positioning means and the GPS positioning system, but the downlink wave 43 transmitted from the base station 3 does not use these. The direction may also be measured, and the position of the mobile search station may be measured from the result of this angle measurement and the position of the base station.

As described above, according to the second embodiment, in addition to the effects shown in the first embodiment, the portable wireless device 2
Even if there is only one base station that can receive the uplink wave from, the mobile radio can be positioned. Also,
As the angle of the mobile search station is repeated, it becomes possible to move the mobile search station closer to the mobile wireless device and move to a place that is not affected by multipath. It is possible to position the missing person with high accuracy.

Embodiment 3 Next, FIG. 6 and FIG. 7 are an internal configuration diagram of the mobile wireless device 2 according to the third embodiment and a schematic diagram when the mobile wireless device 2 is built into clothes. Embodiment 3
In comparison with the first and second embodiments, only the configuration of the portable wireless device 2 is special. As a configuration of the portable wireless device according to the third embodiment, a terminal having an antenna 2a and a power feeding line 2aa, a transmission / reception switch 2b, a receiver 2c, a transmitter 2g, an ID signal generating means 2h, and a precise positioning command decoder 2i. The main body 72 and the thin battery 73 are integrated or built into the clothing 71 or the like. And the precise positioning command decoder 2
When i receives the precise positioning command, an ID signal is generated by the ID signal generating means 2h, and the radiation wave 64 is emitted from the antenna 2a.
It is designed to emit radiation.

The components other than the garment 71 shown in FIG. 7 are waterproof or constructed such that some or all of them can be detached when washing the garment. In the above embodiment, the portable wireless device is attached to clothes, but it may be attached to items such as shoes, watches, and accessories that are always worn.

As described above, according to the third embodiment,
In addition to the effects shown in the first and second embodiments, it is possible to increase the probability that a missing person, especially a wandering old man, carries a portable wireless device, and the missing person does not carry the portable wireless device, so that a search cannot be performed. It has the effect of reducing the probability.

Embodiment 4 FIG. Next, a fourth embodiment of the present invention will be described with reference to FIG. In the fourth embodiment, the portable wireless device 2 has a special configuration. That is, the fourth embodiment
In addition to the configuration shown in FIG. 2, the portable wireless device 2 of the present invention includes an oscillator 2o and an acoustic speaker 2q that outputs a signal in the voice band from the oscillator 2o as a sound wave 2r. When the fine positioning command is received, the oscillator 2o is activated to emit the sound wave 2r from the speaker 2q. Therefore, according to the fourth embodiment, the searcher can search for the missing person based on the arrival direction and intensity of the sound wave 2r. In the above embodiment, a signal in the voice band is used, but instead, a radio wave (beacon wave) in a frequency band different from wireless, an ultrasonic wave, an infrared ray, or the like may be used.

Embodiment 5 FIG. Next, a fifth embodiment of the present invention will be described with reference to FIGS. The fifth embodiment is a search system using a personal handy phone system (PHS) that is already in operation. FIG. 9 shows the overall configuration of the fifth embodiment, 17 is a rough positioning information storage means, 41 is a mobile search station operated by a searcher, 10
1 is the PHS base station, 102 is the P of the missing person to be searched
It is an HS portable wireless device.

Here, as the internal configuration of the PHS portable radio device 102, the antenna 2a, the transmission / reception switch 2b, the receiver 2c, the output device 2d, the input device 2e, which are similar to those of the portable radio device 2 shown in FIG. In addition to transmitter 2g, TDMA / T
A DD processing unit 105, a voice processing unit 106, a microprocessor (MPU) 107, and an ID signal memory 109 are provided.

Prior to the description of the fifth embodiment, the PHS
Will be described. Currently operating PHS is TDMA
It is a digital communication system using a communication access / transmission system of (time division multiple access) / TDD (time division duplex). In this system, for example, as shown in FIG. 13, channel division and transmission / reception division are performed by allocating time slots. The communication data used by one portable wireless device uses one of these time slots. The TDMA / TDD processing unit 105 of the portable wireless device 202 converts a transmission / reception signal and control data or communication data according to the above communication system, and a voice processing unit 106 converts communication data and voice signal and controls them. Is in charge.

The rough positioning information storage means 7 stores information indicating the base station area where each portable wireless device 102 is currently located. Fixed terminal 5 to portable radio 10
When calling 2, the exchange 4 refers to the rough positioning information storage means 17 from the dialed number of the fixed terminal 5, selects the base station 101c closest to the portable wireless device 102, and connects to it. Further, the selected base station 101c secures a wireless link with the mobile wireless device 102 by transmitting parameters for communication setting such as carrier frequency and time slot number to the mobile wireless device 102 on the control channel. After this procedure, the fixed terminal 5 can talk with the portable wireless device 102. When calling from the mobile wireless device 102 to the fixed terminal 5, line connection is performed according to the above procedure except that the mobile wireless device 102 issues a connection request to the base station.

Next, the fifth embodiment will be described. Except for a mobile search station (searcher portable radio device) 41 operated by a searcher, the configuration is the same as that of a normal PHS. Mobile Search Station 4
FIG. 11 shows the internal configuration of the No. 1 unit. The mobile search station 41 is roughly divided into a PHS terminal part and a direction search part. 41
a0 is an antenna for PHS communication, 41a1, 41a2, ...
...., 41am are element antennas for direction search, 41d0 and 41d
q is a receiver and transmitter for PHS communication, 41p is a transmission / reception switch for PHS communication, 41d1, 41d2, ..., 41d
m is a receiver for direction search, 109a is an I specific to the mobile search station.
A first ID signal memory for storing the D signal memory, 109
b is a second ID signal memory for storing an ID signal memory unique to the mobile radio of the missing person, 110 is input means, 11
4 is display means, 130 is receivers 41d1, 41d2 ,.
.., 41, receivers 41d1, 41d2, ..., 41
Numeral 131 is a sampler for sampling the output signal of dm, 131 is a timing control means for controlling the sampling timing of the sampler 132, and 133 is an azimuth display means for instructing the radio wave arrival angle θ calculated by the angle measurement processing means 3g.

The operation of the mobile search station 41 will be described with reference to the flowchart shown in FIG. First, in step 135, the ID signal unique to the mobile radio of the missing person is stored in the ID signal memory 2. In step 136, the searcher inputs the input device 1
Dial the telephone number of the mobile radio 102 of the missing person at 10 (the contents of the first ID signal memory 109a are such that the mobile search station performs radio communication with the base station as one of the PHS mobile radios). Referred to). At this time, if the missing person's portable wireless device 102 is simultaneously present in the base station area 8c in which the mobile search station 41 is currently present, wireless communication is started between the base station 101c and the portable wireless device 102, and The station 101c transmits a control signal to the portable wireless device 102. This control signal contains the I
D signal is attached.

At this time, the mobile search station 41 performs step 1
At 37, the transmission wave from the base station 101c is captured by the antenna 41a0, and the MPU 107 determines the ID of the other party of the control signal.
The signal and the contents of the second ID signal memory 109b are compared one by one. If the collation is not possible, that is, if the control signal to the portable wireless device of the missing person is not transmitted, the process proceeds to step 138, and the display unit 114 displays that the missing person does not exist in the base station area, The searcher who receives this moves the mobile search station 41 to another base station area in step 139, and then returns to step 136 again.

On the other hand, in step 137, when the ID signal of the portable radio device of the other party of control of the control signal and the contents of the second ID signal memory 109b match, that is, the control of the missing person portable radio device is performed. When the signal is transmitted, the fact that the missing person exists in the same base station area is displayed on the display means 114, and the process proceeds to step 140. In step 140, the control signal that matches the contents of the ID signal memory 2 is decoded, and the carrier frequency of the PHS communication wave and the time slot number assigned to the missing person's portable wireless device from the base station are known. In response to this, step 1
In 41, the frequency control means 130 sets the set frequency to the carrier frequency, and in step 142, the timing control means 131 sets the sampling timing to the time slot.

Thereafter, in step 143, angle measurement signal processing is performed. At this time, the receivers 41d1 to 41dm are controlled by the frequency control means 130 so as to tune the reception frequency to the frequency of the communication wave between the base station 101 and the mobile radio 201 of the missing person, and the timing control means 131 samples the sampler. As shown in FIG. 13, the timing is controlled so that it operates only during the time slot used by the transmission wave of the mobile radio 201 of the missing person. Therefore, since the signal processed by the angle measurement processing means 3g processes only the transmitted wave of the mobile wireless device 102 of the missing person, the arrival angle θ displayed by the azimuth display means 133 in step 144 is the mobile search station. The arrival direction of the transmission wave 9 of the portable wireless device 102 of the missing person as seen from 41. The searcher receiving this moves the mobile search station 41 in the direction of the arrival angle θ displayed by the azimuth display means 133 in step 145, and repeats steps 143-145 until the missing person is found.

According to the fifth embodiment, the searcher uses the normal PHS without any modification to determine the presence / absence of a missing person in the base station area in which the mobile search station is located, and the details of the missing person. I know the position. At this time, the portable wireless device carried by the missing person is a normal PHS.
Lightweight because you can use it without changing the terminal
Compact and low cost. Further, the mobile search station 41 (if angle measurement processing is not required) only needs to be modified with the software of a normal PHS terminal, so that it is easy to realize. It is also an advantage that the base station position information on the PHS base station side is not required at all.

In the fifth embodiment, step 1
Although the presence / absence of a missing person in the base station area is detected from the control signal from the base station 101c to the portable wireless device at 37, the control signal from the portable wireless device to the base station may be used for detection. . The same PHS device (antenna 41a0, transmission / reception switch 2b such as a duplexer, transmitter 2g, receiver 41d0) for normal communication of the base station and interception of a control signal for detecting the presence or absence of a missing person, TDM
Although the A / TDD processing unit 105 and the MPU 107) are shared, there is no problem if they are separately prepared. Further, the antenna 41a0 and the receiver 41d0 may be configured to be shared with either the antenna or the receiver used in the direction finding.

Further, in the fifth embodiment, the portable wireless device carried by the missing person used the normal PHS terminal without any change. The time when a command is sent to the missing person's portable radio and the sampler 132 samples (see FIG. 1).
It is preferable that only 3) is configured to increase the transmission power of the mobile wireless device of the missing person, because the estimation error of the arrival angle θ in the angle measurement processing means is small and the efficiency of the battery of the mobile wireless device is increased. . In the fifth embodiment, the mobile search station 41 measures not only the arrival angle of the radio wave transmitted from the portable wireless device 102 but also the electric field strength, and determines the distance from the mobile search station from the attenuation characteristic of the electric field strength. It is also possible to estimate the position, improve the accuracy of position estimation, and shorten the search time.

Further, if the missing person position estimation is performed only in the area of the base station, the direction search element antennas 41a1, 41a2, ..., 41am of the mobile search station 41 and the direction search receivers 41d1, 41d2. , 41 dm, sampler 132, angle measurement processing means 3 g, frequency control means 13
0, the timing control means 131, and the azimuth display means 133 may be omitted and only the presence of the missing person may be displayed.

In the fifth embodiment, the search is started from the mobile search station, but at the same time, the portable wireless device 102 as the mobile terminal of the missing person is equipped with a switch to start the search from the missing person. It may be possible to give instructions. Also, the power supply of the missing person's portable radio is always on.
It is necessary to turn on only the receiving function and turn on all functions by remote control from the searcher terminal, but in addition to the PHS radio as a portable radio of the missing person, less power consumption A pager receiver may be added, and the power supply of the PHS terminal can be remotely controlled through the pager line to prevent the battery of the missing person's portable radio from being consumed.

[0066]

As described above, according to the positioning system for a portable wireless device according to the present invention, the portable wireless device, the wireless device which is placed apart from each other and communicates with the portable wireless device, and the portable wireless device. A plurality of base stations having angle measuring signal processing means for measuring the arrival angle of the transmission wave from the device, and a base station which is connected to the plurality of base stations via a communication line and is closest to the portable wireless device. A fixed terminal, which is connected to the plurality of base stations through a communication line and which detects and stores the rough positioning processing means, selects the base station closest to the portable wireless device based on the output of the rough positioning processing means. In a positioning system for a portable wireless device including an exchange to be connected to the mobile wireless device, the arrival angle of the transmission wave from the portable wireless device is set only to a base station near the portable wireless device selected based on the output of the rough positioning processing means. Make the measurement and the measurement result Since the precise positioning processing means for determining the position of the portable wireless device based on the above is provided, the portable wireless device becomes cheaper, lighter and more compact than the case where positioning is performed by GPS or the like, and the existing mobile wireless device can be used as it is. Positioning can be performed even when the portable wireless device is out of sight to the satellite, and there is an effect that the occupied frequency band of the radio wave can be small compared with the case where positioning is performed simply from the arrival angles of a plurality of base stations.

The plurality of base stations include a plurality of element antennas, a plurality of receivers respectively connected to the plurality of element antennas for receiving processing, and a space based on output signals of the plurality of receivers. MUS using smoothing method
Since the angle measurement signal processing means for performing the angle measurement of the direct wave of the multipath wave according to the IC angle measurement method or the maximum likelihood estimation angle measurement method is provided,
MUS in which the plurality of base stations use the spatial smoothing method
The angle can be measured according to the IC angle measuring method or the maximum likelihood estimation angle measuring method, and the positioning can be performed even when the missing person is in a multipath environment in an urban area or indoors.

According to another aspect of the present invention, there is provided a portable wireless device positioning system, a portable wireless device, and a plurality of base stations each of which has a wireless device which is placed apart from each other and communicates with the portable wireless device. Coarse positioning processing means connected to the plurality of base stations via a communication line and detecting and storing a base station closest to the portable wireless device, and connected to the plurality of base stations via a communication line. In the positioning system for a mobile wireless device, which comprises a switch for selecting a base station closest to the mobile wireless device based on the output of the rough positioning processing means and connecting it to a fixed terminal, a transmission wave from the mobile wireless device is provided. Angle measuring processing means for measuring the angle of arrival and a radio that communicates with the base station, move to the vicinity of the base station selected based on the output of the rough positioning processing means, and move away from each other near the base station. 2
It measures the angle of arrival of the transmitted wave from the portable radio at more than one point, and has a mobile search station that determines the position of the portable radio based on the measurement results. Since this can be done and the influence of multipath waves can be avoided, more accurate positioning can be performed.

Further, since the mobile search station determines the position of the mobile search station based on the measurement of the arrival angles of the radio waves transmitted by the plurality of base stations, a special measurement is required to measure the position of the mobile angle measurement station. It is not necessary to have a device. In addition, the accuracy can be improved even when a special measuring device is provided for position measurement of the mobile angle measuring station.

Further, since the portable wireless device is provided with the sound wave generating means for generating a sound wave based on the reception of the precise positioning command command from the base station, the position of the portable wireless device is determined based on the sound wave. It is possible to determine the position of the terminal even in the presence of multipath waves.

Further, by incorporating the portable wireless device in clothes, shoes, watches, or accessories, it is possible to prevent a missing person from being separated from the terminal and unable to search.

According to another aspect of the present invention, there is provided a portable wireless device positioning system, which comprises: a portable wireless device; and a plurality of base stations each having a wireless device that is placed separately from each other and communicates with the portable wireless device. A coarse positioning processing unit that is connected to the plurality of base stations via a communication line and senses and stores the base station closest to the portable wireless device; and is connected to the plurality of base stations via a communication line. In a positioning system for a portable wireless device that includes an exchange that selects a base station closest to the portable wireless device based on the output of the rough positioning processing means, search for a wireless device that communicates with the base station. When a searcher ID signal memory for storing an ID signal unique to the portable wireless device and a telephone number for the portable wireless device to be searched are dialed, a communication control signal is transmitted between the base station and the portable wireless device, The communication control Control for determining whether or not there is a portable wireless device to be searched for in the communication area of the base station based on whether or not the signal contains the ID signal stored in the searcher ID signal memory. Since the mobile search station having the means is provided, it is possible to know whether or not the portable wireless device is present in the vicinity, and avoid unnecessary search.

The base station, the exchange, and the portable wireless device constitute a personal handy system, and the mobile search station refers to its own station when communicating with any base station of the personal handy system. ID of
The control means further has a local station ID signal memory for storing a signal, and the control means refers to the local station ID memory to communicate with the wireless portable device to be searched for via the base station to obtain the searcher ID signal. Since the communication wave between the base station and the portable wireless device is intercepted with reference to the memory, it is possible to know whether or not the portable wireless device exists in the vicinity without modifying the PHS. It is possible to know whether or not the portable wireless device exists in the vicinity without using the interception receiver at the search station, and avoid unnecessary search.

The mobile search station also includes a control signal decoding means for decoding a communication control signal from the base station to the portable wireless device to be searched, and a measurement for measuring the arrival angle of the transmitted wave of the portable wireless device to be searched. It further has an angle processing means and an azimuth display means for displaying the arrival azimuth measured by the angle measurement processing means, and the control means of the portable radio device to be searched which is decoded by the control signal decoding means. Since the angle of arrival of only the transmission wave of the portable wireless device to be searched for in synchronization with the frequency and the transmission timing of the transmission wave is measured by the angle measurement processing means,
Even if a plurality of other portable wireless devices are in the vicinity, the direction from the searching station can be known and the portable wireless device can be searched more easily without using the interception receiver at the searching station.

[Brief description of drawings]

FIG. 1 is an overall configuration diagram showing a positioning system for a portable wireless device according to a first embodiment of the present invention.

FIG. 2 is an internal configuration diagram of the mobile wireless device 2 of FIG. 1 according to the first embodiment.

FIG. 3 is an internal configuration diagram of the base station 1 of FIG. 1 according to the first embodiment.

FIG. 4 is an overall configuration diagram showing a positioning system for a portable wireless device according to Embodiment 2 of the present invention.

5 is an internal configuration diagram of the mobile search station 41 of FIG. 4 according to the second embodiment.

FIG. 6 is a portable radio device 2 according to Embodiment 3 of the present invention.
FIG.

FIG. 7 is a schematic diagram of a case where the mobile wireless device 2 according to the third embodiment is built in clothes.

FIG. 8 is a portable radio device 2 according to Embodiment 4 of the present invention.
FIG.

FIG. 9 is an overall configuration diagram showing a positioning system for a portable wireless device according to Embodiment 5 of the present invention.

FIG. 10 is a PHS portable wireless device 10 according to a fifth embodiment.
2 is an internal configuration diagram of FIG.

FIG. 11 is an internal configuration diagram of a mobile search station 41 according to the fifth embodiment.

FIG. 12 is a flowchart illustrating an operation procedure of the mobile search station 41 according to the fifth embodiment.

FIG. 13 is a diagram illustrating communication timing of PHS and operation timing of sampler 132 according to the fifth embodiment.

FIG. 14 is an overall configuration diagram showing a positioning system for a portable wireless device according to a conventional example using GPS.

15 is an internal configuration diagram of the portable wireless device 2 of FIG.

16 is an internal configuration diagram of the base station 3 of FIG.

[Explanation of symbols]

1, 3 Base station, 2 Portable wireless device, 4 Switch, 5 Fixed terminal, 6 Coarse positioning means, 7 Storage means, 8 Communication service area (cell), 13 Fine positioning calculation means, 17 Coarse positioning information storage means, 41 Moving Search station, 44 Coarse positioning information search means, 71 Clothing, 101 PHS base station, 10
2 PHS portable radio, 109 ID signal memory.

Claims (9)

[Claims] 1. A plurality of portable wireless devices, a wireless device which is disposed separately from each other and communicates with the portable wireless device, and angle measurement signal processing means for measuring an arrival angle of a transmission wave from the portable wireless device. And a rough positioning processing means connected to the plurality of base stations via a communication line to detect and store the base station closest to the portable wireless device, and a communication line to the plurality of base stations. In the positioning system for a mobile wireless device, which is connected via a switch for connecting to a fixed terminal by selecting a base station closest to the mobile wireless device based on the output of the rough positioning processing means, Precise positioning processing for causing only a base station near the portable wireless device selected based on the output of the processing means to measure the arrival angle of the transmission wave from the portable wireless device and obtaining the position of the portable wireless device based on the measurement result Having means Positioning system for mobile wireless devices. 2. The plurality of base stations comprises a plurality of element antennas, a plurality of receivers respectively connected to the plurality of element antennas for receiving processing, and a space based on output signals of the plurality of receivers. MUSIC using smoothing method
2. The positioning system for a portable wireless device according to claim 1, further comprising angle measurement signal processing means for measuring the angle of a direct multipath wave according to the angle measurement method or the maximum likelihood estimation angle measurement method. 3. A mobile radio device, a plurality of base stations each having a radio device arranged to be isolated from each other and communicating with the mobile radio device, and connected to the plurality of base stations via a communication line. Coarse positioning processing means for sensing and storing a base station closest to the portable wireless device, and the portable wireless device connected to the plurality of base stations via a communication line and based on the output of the rough positioning processing means. In a positioning system for a portable wireless device including a switch for selecting a base station closest to the portable terminal and connecting it to a fixed terminal, an angle measurement processing unit for measuring an arrival angle of a transmission wave from the portable wireless device and communication with the base station. A mobile station that moves to the vicinity of the base station selected based on the output of the rough positioning processing means, and transmits the radio wave from the portable radio apparatus at two or more points apart from each other near the base station. Angle of arrival of the A positioning system for a portable wireless device, comprising: a mobile search station for determining the position of the portable wireless device based on the result. 4. The positioning system for a portable wireless device according to claim 3, wherein the mobile search station determines the position of the mobile search station based on measurement of arrival angles of radio waves transmitted by a plurality of base stations. . 5. The portable wireless device according to claim 1, further comprising sound wave generating means for generating a sound wave on the basis of the reception of a precise positioning command command from the base station. Mobile radio positioning system. 6. The positioning system for a portable wireless device according to claim 1, wherein the portable wireless device is built in clothes, shoes, a watch, or an accessory. 7. A portable wireless device, a plurality of base stations each having a wireless device arranged to be isolated from each other and communicating with the portable wireless device, and connected to the plurality of base stations via a communication line. Coarse positioning processing means for sensing and storing a base station closest to the portable wireless device, and the portable wireless device connected to the plurality of base stations via a communication line and based on the output of the rough positioning processing means. In a positioning system for a portable wireless device including a switch that selects a base station closest to the wireless base station, a wireless device that communicates with the base station, and a searcher ID signal memory that stores an ID signal unique to the portable wireless device to be searched for. , A communication control signal is transmitted between the base station and the portable radio when the telephone number to the portable radio to be searched is dialed, and the ID stored in the searcher ID signal memory is transmitted to the communication control signal. Signal included A mobile radio device including a mobile search station having control means for determining whether or not there is a mobile radio device to be searched for in the communication area of the base station based on the determination as to whether or not the mobile search device is present. Positioning system. 8. The base station, the exchange, and the portable wireless device constitute a personal handy system, and the mobile search station refers to its own station when communicating with any base station of the personal handy system. Further includes an own station ID signal memory for storing the ID signal of the above, and the control means refers to the own station ID memory to communicate with the wireless portable device to be searched for via the base station, and the searcher 8. The positioning system for a mobile wireless device according to claim 7, wherein a communication wave between the base station and the mobile wireless device is intercepted by referring to an ID signal memory. 9. The mobile search station comprises control signal decoding means for decoding a communication control signal from the base station to a portable wireless device to be searched, and measurement for measuring an arrival angle of a transmitted wave of the portable wireless device to be searched. It further has an angle processing means and an azimuth display means for displaying the arrival azimuth measured by the angle measurement processing means, and the control means of the portable radio device to be searched which is decoded by the control signal decoding means. 9. The portable wireless device according to claim 7, wherein only the angle of arrival of the transmitted wave of the portable wireless device to be searched for in synchronization with the frequency and the transmission timing of the transmitted wave is measured by the angle measurement processing means. Positioning system.