JPH0392785A - Automatic arrival time detector - Google Patents

Abstract

PURPOSE:To process the judgment of landing and application of an arrival time accurately and automatically by relaying a target being tracked with a secondary radar with precisely measuring radar to judge arrival near a landing point. CONSTITUTION:A secondary radar data 1 processed by tracking with a secondary radar tracking processing section 3 to be collated with a flight plan from a flight plan inputting section 6 with an identifying/correlating section 5 so that correlation is performed to check coincidence between the identification of a target and the flight plan. The correlation in this case is made based on a position data (two-dimensional or three-dimensional) as no identification data is contained in a data obtained with a precisely measuring radar device. When a correlation target is outside a coverage of the secondary radar device because of a short distance, a tracking is continued in combination of the flight plan as target of a precisely measuring approach radar device along to judge whether the target enters an arrival time calculating zone.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to an automatic arrival time detection device, and particularly to an aviation system that uses a secondary radar device and a precision approach radar device in combination to guide a target aircraft to land safely. The present invention relates to an automatic arrival time detection device that automatically detects the arrival time of an aircraft in a control device.

[Conventional technology]

Air traffic control systems that use both a secondary radar system and a precision approach radar system to support landing guidance for aircraft approaching an airport are well known.

Precision approach radar equipment accurately detects the position (azimuth, altitude) of aircraft on the approach course and its positional relationship with the runway, and provides appropriate information to controllers guiding the aircraft to land. Therefore, a precision approach radar device is very suitable as a means for confirming that an aircraft has landed. However, since the precision approach radar device is a primary radar and cannot identify aircraft by itself, it accurately measures information identified in advance by the secondary radar device and accompanying flight plan information as necessary. By taking over the tracking target of the approach radar device, it is confirmed that the aircraft in question has landed.

Previously, the calculation and detection of aircraft landing times in this type of air traffic control system was done either visually by the controller in the control tower and input manually, or only using information from secondary radar equipment. .

[Problem to be solved by the invention]

In the conventional arrival time determination described above, if the controller manually determines the arrival time, there is room for erroneous measurements or erroneous operations, and if only information from the secondary radar device is used, the secondary radar device's own short-range target The disadvantages are that detection is unstable due to diffused reflections and clutter inside the airport, and that the detection distance is usually more than 1 mile, making it unreliable both in terms of arrival time detection and time. be.

SUMMARY OF THE INVENTION An object of the present invention is to eliminate the above-mentioned drawbacks and provide an automatic arrival time detection device that can accurately and automatically detect arrival times.

[Means to solve the problem]

The automatic arrival time detection device of the present invention includes means for correlating target data of the secondary radar device and the precision approach radar device in a landing guidance system comprising a secondary radar device and a precision approach radar device; means for checking consistency between the correlated target and the flight plan; means for detecting that the correlated target enters or passes through a pre-stored or set landing area; and a means for transmitting the landing of the target aircraft based on the time of the landing and the time of the landing.

〔Example〕

Next, the present invention will be explained with reference to the drawings.

FIG. 1 is a structural diagram of one embodiment of the present invention. ■ is the secondary radar target data supplied from the secondary radar device, 2
is the precision radar target data 2 from the precision approach radar device; 3 is the secondary radar tracking processing unit that tracks the secondary radar target data 1 and sends it to the identification/correlation unit 5; 4 is the precision radar target data 2 The precision radar tracking processing section performs tracking processing and sends it to the correlation processing section 7, and identifies the tracking target of the secondary radar device, which is a search radar, based on the flight plan provided from the flight plan input section 6. an identification/correlation unit 5 that checks the consistency of the information, a flight plan input unit 6 that inputs the flight plan manually or automatically, and an identification/correlation unit 5
Correlation processing unit 7, which determines the correlation between the secondary radar target identified/correlated with the precision radar target tracked by the precision radar tracking processing unit 4 and takes over the tracking and flight plan, calculates the arrival time set in advance. Arrival time calculation area data generation unit 8 for generating data corresponding to the area, clock 9 for giving the arrival time, and arrival time calculation area data generation unit 8 for generating data corresponding to the area, clock 9 for giving the arrival time, and arrival time calculation area data generation unit 8 for generating data corresponding to the area; Arrival time detection section 2 detects based on data of time calculation area data section 8 and assigns the time based on clock 9. Arrival time detection section 2 displays arrival information detected by arrival time calculation section 10, target flight data, etc. A display and data sending unit 12 for sending data to the outside is incoming data to be output to an external device.

The secondary radar data l is tracked in the secondary radar tracking processing unit 5 (3), and is compared with the flight plan from the flight plan input unit 6 in the identification/correlation unit 5 to confirm the identification of the target and the consistency with the flight plan. Correlation is performed to check the presence or absence. On the other hand, the precision radar target data 2 is subjected to tracking processing by the precision radar tracking processing section 4, and correlation processing is carried out by the correlation processing section 7. Targets that are correlated here are those that are within the common coverage area of the secondary radar device and the precision approach radar device, and are detected simultaneously by both radar devices, or if the predictive gate based on tracking has a common coverage area. This is when the area is within the area. Correlation in this case is based on position data (two-dimensional or three-dimensional), since identification data is not included in the data acquired by the precision radar device. When the correlated target is out of the coverage area of the secondary radar device due to short distance, it continues to be tracked using the flight plan as a target only for the precision approach radar device, and determines whether it has entered the arrival time calculation area. do.

FIG. 2 is an explanatory diagram showing the relationship between the coverage area by the precision approach radar device and the arrival time calculation area.

The precision approach radar device 13 is disposed near the runway 146 of the airport, and sets a precision radar coverage area 16 using data for an aircraft l8 approaching along the approach course 15. It is shown that a spatial area indicated by an arrival time calculation area 17 is set at the end.

In this way, the secondary radar target is tracked and identified, and that information is passed on to the target tracked by the precision approach radar.
An arrival time calculation area 17 corresponding to the vicinity of the landing point is set in advance using data, and arrival is detected when the tracked target enters the area, and the time and related data at that time are displayed and transmitted.

Therefore, the scope of the claims of this patent is not limited by whether or not a search radar is attached to the secondary radar device, or by the method of tracking and correlation.

〔Effect of the invention〕

As explained above, the present invention takes over the target tracked by the secondary radar with the precision radar and determines the arrival near the landing point, thereby accurately and automatically determining the landing and assigning the arrival time. It has the effect of being able to be effectively processed.

4

[Brief explanation of drawings]

FIG. 1 is a configuration diagram showing one embodiment of the present invention, and FIG.
FIG. 3 is an explanatory diagram showing the relationship between the coverage area of the precision radar device and the arrival time calculation area in the illustrated embodiment. 1... Secondary radar target data, 2...
Precise radar target data, 3... Secondary radar tracking processing section, 4... Precise radar tracking processing section,
5...Identification/correlation unit, 6...Flight plan input unit: 7...Correlation processing unit, 8...
Arrival time calculation area data generation unit, 9... Clock;
10... Arrival time detection unit, 11... Display and data sending unit, 12... Arrival data.

Claims (1)

[Claims] Means for correlating target data of the secondary radar device and the precision approach radar device in a landing guidance system comprising a secondary radar device and a precision approach radar device, and a target and a flight plan correlated by the means. means for detecting whether the correlated target has entered or passed through a pre-stored or set landing zone; and means for transmitting the time of landing.