WO1995001687A1

WO1995001687A1 - Radio reconnaissance system

Info

Publication number: WO1995001687A1
Application number: PCT/EP1994/002137
Authority: WO
Inventors: Dieter Frank; Werner Kredel
Original assignee: Daimler-Benz Aerospace Ag
Priority date: 1993-07-02
Filing date: 1994-06-30
Publication date: 1995-01-12
Also published as: DE4322045A1

Abstract

The invention relates to a radio reconnaissance system consisting of a plurality of separate structural units in the form of one or more receivers and/or direction finders, at least one signal processing and evaluation unit and one or more consoles, said structural units generating and/or processing various kinds of signal like useful signal data, intermediate-frequency, audio and auxiliary tuning signals and being interconnected for the transmission of these multifarious signals. To reduce the wiring as much as possible and attain the maximum configuration flexibility, the invention proposes that the individual structural units or at least part thereof be connected for the transmission of the signals via a network interface to a uniform network for all the signals to be transmitted, preferably in the form of a bus or an LAN.

Description

description

Radio reconnaissance system

The invention relates to a radio clearing system according to the preamble of patent claim 1.

Radio reconnaissance systems consist of a plurality of separate assemblies such as direction finders, search receivers, monitoring receivers, signal analyzers or classifiers and operator stations. All of these assemblies generate or process the most varied of signals, such as analog or digital useful signals, intermediate frequency signals, audio signals and auxiliary tuning signals, which are exchanged between the individual assemblies. For this purpose, the individual modules in known radio clearing systems are connected to one another by a large number of lines. For example, the transmission of audio signals via symmetrical 600Ω two-wire lines is common, while intermediate frequency signals are generally transmitted via coaxial lines and auxiliary signals via shielded lines and digital useful signals via standardized two-wire lines (eg RS232 or V24) . This type of hardware cabling of the individual assemblies is very complex and, above all, makes it difficult to reconfigure multifunctional radio reconnaissance systems.

The object of the invention is to improve a radio clearing system of the type mentioned at the outset such that the system can be adapted to changing radio scenarios as simply and quickly as possible.

The solution according to the invention is represented by the characterizing features of patent claim 1; the remaining claims contain advantageous developments and further developments of the invention.

The main advantages of the invention are that

- That the wiring effort is significantly reduced;

- That a simple and fast (software) reconfiguration of the system is possible with changing radio scenarios; that the principle of "short signal paths", which is to be observed in particular in the case of critical signals, can be readily adhered to;

- That an order-related software data flow control is possible via the operator stations ("user interfaces").

In the following the invention with reference to FIG. 1, which shows an advantageous embodiment of the radio reconnaissance system according to the invention.

The system consists (by way of example) of a signal analyzer / classifier 4, a plurality of search receivers 5a-m, several monitoring or suspension receivers 6a-n, a local direction finder 7 and two remote direction finders 8a-b and three operator stations 9a -c.

These modules 4-9 are each connected to a uniform data transmission network in the form of a bus 1 via a bus interface 2 ("frame synchronizer"). The data transmission via the bus 1 is organized in a control unit 3 which is also connected to the bus 1 and to which a mass memory 10 is also connected.

The bus 1 is used to transmit a wide variety of signals that are generated or processed in the individual modules 3-9. For example, digitally processed analog or digital useful signals are suitable,

Intermediate frequency signals, audio signals or tuning aids. Signals to be transmitted are first adapted by the bus interface 2 of the sending module (for example the search receiver 5m) to the special transmission requirements of the bus 1 and then via the bus 1 to the bus interface 2 of the receiving module (for example the Si Signal analyzer / classifier 4) transferred and adapted there to the special requirements of the associated receiving module and passed on to them. By standardizing the signals to be transmitted by the

Bus interfaces 2 make it possible to transmit the most diverse signals (see above) via a single, uniform transmission channel, bus 1.

The organization of the signal transmission via the bus 1 is carried out by the control unit 3 according to the principle of free access which is known per se (here, the individual modules are assigned different access priorities which determine the access sequence in the event of a simultaneous access request ("collision")) uniquely regulates several modules) or according to the principle of deterministic access. An example of a network with free access is the known CSMA / CD (Carrier Sense Multiple Access Collision Detect) network; Examples of a network with deterministic access are the token ring, the MIL bus 1553B or the FDDI (Fiber Distributed Digital Interconnect) network.

The bus 1 can be implemented as an Ethernet network. The design of the fiber-based bus (such as the FDDI network) is also advantageous, particularly for the rapid transmission of large amounts of data. The mass storage device 10 serves as a raw data buffer, in which all data or signals that are generated or to be transmitted are first buffered before they are processed further. This is particularly important for cases in which the amount of data to be processed is so large that "on-line" data processing is not possible, or in which older data must also be used in the course of data processing.

The invention is not limited to the exemplary embodiment shown, but can be transferred to others.

So it is e.g. possible to design the network interfaces so that they can be universally adapted for all network organization models with free or deterministic access. It is also conceivable that a network interface connects several modules of a radio clearing system to the network. Instead of bus structures, LANs (LAN = Local Area Network) can also be used.

Claims

claims

1. Radio reconnaissance system, consisting of a plurality of separate assemblies in the form of one or more receivers and / or direction finders, at least one signal processing and evaluation unit and one or more operator stations, which assemblies different types of signals such as useful signal Generate and / or process data, intermediate frequency, audio signal, tuning auxiliary signals and are connected to one another for the transmission of these various signals, characterized in that the individual assemblies (4-9) or at least part of the assembly Groups for the transmission of the signals are connected via a network interface (2) to a network (1), which is uniform for all signals to be transmitted, preferably in the form of a bus or a LAN.

2. Radio reconnaissance system according to claim 1, characterized in that a network control unit (3) connected to the network (1) is provided for organizing the signal transmission between the individual assemblies.

3. Radio reconnaissance system according to one of claims 1 or 2, characterized in that the individual modules (4-9) are assigned different access priorities and the organization of the network (1) is carried out according to the principle of free access.

4. radio reconnaissance system according to claim 3, characterized gekenn¬ characterized in that the network is implemented as a CSMA / CD network.

5. Radio reconnaissance system according to one of claims 1 or 2, characterized in that the organization of the network (1) is based on the principle of deterministic access and that the network (1) preferably as a token ring or MIL bus or as an FDDI Network is realized.

6. Radio reconnaissance system according to one of the preceding claims, characterized in that the network (1) is implemented as an Ethernet network.

7. Radio clearing system according to one of the preceding claims, characterized in that the network (1) is implemented as an optical fiber network.

8. Radio reconnaissance system according to one of the preceding claims, characterized in that the intermediate storage After the signals to be transmitted, or at least some of these signals, a mass storage device (10) is connected to the network (1) or to the network control unit (3).

9. Radio clearing system according to one of the preceding claims, characterized in that the individual network interfaces (2) are universally adaptable for all network organization models.

10. Radio reconnaissance system according to one of the preceding claims, characterized in that the network interfaces (2) of the individual modules (4-9) or at least a part of the modules are combined to form a single overall network interface.