JPH0545437A - Gps receiver - Google Patents

Abstract

PURPOSE:To make it possible to compute the distance and the latitude and the longitude of a point on a map by providing a scale, on which specified diminishing scale graduations are marked, on the main body of a GPS, and displaying the angle per degree on the scale. CONSTITUTION:A scale 2 is provided at the corner part of the edge of a GPS main body 1. A diminishing scale graduation 3 of AKm per degree in, e.g. a scale of 1/10,000 and an angle X deg. Y' Z'' per degree of the graduation 3 are marked on the scale 2. The scale is applied on a map. When the number of the graduation read between two points is 7, the distance is computed as 7XAKm in the case of the map of the same scale. Furthermore, the angle X deg. Y' Z'' per degree of the scale is used, and the number of the graduations from the reference point of the map, where the latitude and the longitude are known, is read. The number is multiplied by the angle X deg. Y' Z''. The obtained value is added to the latitude of the reference point and subtracted from the longitude of the reference point. Thus, the latitude and the longitude of the objective point can be computed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is a GP capable of knowing the present position by receiving radio waves from artificial satellites.
S (Global Positioning System)
em) relates to the device.

[0002]

2. Description of the Related Art When moving to a destination, the remaining distance is obtained by measuring the current position, the destination and the distance on a map. The current position can be calculated immediately after the GPS body receives radio waves from the satellite. However, the work of plotting the latitude and longitude of the current position calculated by the GPS main body on the map and the work of calculating the distance between the plotted current position and the destination are troublesome as follows.

On a large scale map, the latitude and longitude are shown at the four corners of the map. For example, when measuring the distance from a certain point to a certain point on the map, a ruler or the like is applied to the map to measure the length between the two points, and the scale factor of the map is multiplied to obtain the actual distance. Alternatively, when the waypoint is registered in the GPS, the destination and the latitude and longitude of the weight point are calculated with reference to one of the latitude and longitude marked at the four corners on the map and registered in the GPS body. Also, the latitude and longitude are calculated proportionally from the length on the map.

[0004]

However, it is necessary to individually have a ruler to be used when measuring the distance between the current position and the two points of the destination on the map, and to calculate the actual distance. The map length must be multiplied by the map scale.

Further, since the latitude and longitude are marked only on the four corners on the map, when registering the waypoint in the GPS main body, the purpose is based on the latitude and longitude marked on the four corners of the map. The latitude or longitude of the ground or weight point is calculated, and in that case, the length to the destination or weight point is measured with a ruler based on the one point marked in the four corners, and the latitude and longitude are calculated proportionally from the total length. Had had a lot of time for the setup. It is an object of the present invention to provide a GPS device that can easily calculate the distance between two points on a map and can quickly obtain the latitude and longitude of the point on the map.

[0006]

According to a first aspect of the present invention, there is provided a GPS device, wherein a GPS body for receiving and positioning radio waves from a satellite is provided with a scale having a predetermined scale, and the scale is hit once. It is characterized by displaying the angle of.

According to a second aspect of the present invention, there is provided the GPS device according to the first aspect, wherein scales are formed at corners of an end face of the GPS body. G according to claim 3
The PS device is characterized in that, in the GPS device according to claim 1, a tape-shaped scale is built in the GPS main body or attached to the surface of the GPS main body.

[0008]

According to this construction, since the GPS body is provided with the scale having a predetermined scale scale, the distance can be read by applying the scale to the map. Furthermore, since the angle per first degree is displayed on the scale, the reference point is a value obtained by reading the number of scales from the reference point on the map where the latitude and longitude are known and multiplying this by the angle per first degree. The latitude and longitude of the destination can be calculated by correcting the latitude and longitude of.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. The GPS device of the present invention is configured as shown in FIG. A GPS main body 1 having a function of receiving radio waves from GPS satellites and calculating a current position is provided with a scale 2 at a corner of an end face, and the scale 2 has a scale "1" as shown in FIG. / 10,000 "and the scale scale 3 of A kilometer per first scale and the angle X ° Y'Z" per scale of the scale scale 3 are entered.

A method of using the GPS device thus configured will be described. When obtaining the distance from the current position B on the map 4 to the destination C or the weight point D as shown in FIG. 3, the scale 2 attached to the GPS main body 1 is set to B on the map as shown in FIG. −
Hit between C and find the distance from scale 2.

[0011] For example, when the map is scaled to 1/10000, the distance between two points is measured on the scale of 1/10000 and it is the seventh time. The actual distance of the first time on the scale 2 is A. Since it was kilometers, it can be calculated as 7 · A kilometers here. When the scale 2 shown in Fig. 2 is used on a map with a scale of 1 / 25,000, the distance displayed is 2.5 times the number of scales, and 5 times with a map with a scale of 1 / 50,000. Equivalent to.

In addition, the weight point D is attached to the GPS main body 1.
When registering, the latitude of the reference point P, which is one of the latitudes and longitudes marked at the four corners of the map as shown in FIG. 2, is x °.
When the longitude is a ° d′ c ″ in y′z seconds, the scale 2 attached to the GPS body 1 is applied, and the number of graduations between the weight point D and the point Q orthogonal to the reference point P.
Here, about 5.8 is calculated, and the angle per first angle X °
Multiply Y'Z "and calculate the latitude x ° y 'of the reference point P.
Similarly, the longitude of the weight point D is obtained by calculating the number of graduations between the weight point D, the orthogonal point R and the reference point P, here about 6.3, and setting it to 1
The angle X ° Y'Z "per degree is multiplied, and this is subtracted from the longitude a ° d'c" of the reference point P.

Therefore, the latitude and longitude of the weight point D can be easily calculated as follows without performing the troublesome proportional calculation as in the conventional case. Latitude x ° w'z "+ 5.8 × X ° Y'Z" Longitude a ° d'c "-6.3 × X ° Y'Z" GPS and the destination and weight point latitude and longitude thus obtained Register with. Correspondence to maps with different scales is as described above.

Although the scale 2 is provided on the outer surface of the GPS main body 1 in the above embodiment, it is a tape measure and has a scale of 1 / 10,000 and a scale of A kilometers per degree, as in the case shown in FIG. The same effect can be expected even if a scale in which the angle X ° Y′Z ″ for the first time is written is attached to the GPS body 1 or attached to the surface of the GPS body 1.

[0015]

According to the GPS device of the first aspect of the present invention, a scale having a predetermined scale is provided on the GPS body for receiving and positioning radio waves from a satellite, and the scale has an angle per degree. Since it is displayed, it is not necessary to have a ruler for measuring the length between two points on the map separately from the GPS body,
Further, in any scale map, it is possible to quickly determine the actual distance, the destination, the latitude and longitude of the weight point simply by applying the scale attached to the GPS main body to the map.

[Brief description of drawings]

FIG. 1 is an external perspective view of an embodiment of a GPS device of the present invention.

FIG. 2 is a detailed view of a scale of the device.

FIG. 3 is an explanatory diagram of a distance, latitude, and longitude measuring method using the same device.

[Explanation of symbols]

 1 GPS main body 2 Scale 3 Scale scale 4 Map X ° Y'Z ″ Angle per 1st scale scale

Claims (3)

[Claims] 1. A GP for positioning by receiving radio waves from a satellite.
A GPS device in which a scale having a predetermined scale is attached to the S body, and the angle per first degree is displayed on the scale. 2. The GPS device according to claim 1, wherein a scale is formed at a corner of an end surface of the GPS body. 3. The GP according to claim 1, wherein a tape-like scale is incorporated in the GPS main body or attached to the surface of the GPS main body.
S device.