Patent US4823362A successfully refreshed from Google Patents.
Patent EP0044133A2 successfully refreshed from Google Patents.
EP0044133A2
Expired / Lapsed
EP
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Apparatus for simulating interference transmissions
Assignee: Individual
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Filing: 1981-06-09
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Granted: —
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Expires: 2001-06-09
Abstract
Abstract A simulated interference system is provided wherein an interference signal of an interference source is simulated by a narrow band coded control signal (C) that is transmitted from a control transmitter (3) to a target receiver (2) that is engaged in normal communications. The control signal (C) is received by the target receiver (2) and is applied to an interference injector (5) that is coupled to the antenna (4) of the receiver. The interference injector (5) decodes the control signal (C) and couples a corresponding interference signal to the antenna of the receiver. The interference signal of the interference injector (5) operates to disrupt the normal communications signals (S) that are received by the target receiver (2). The system has the advantage that it affects only the equipment under test and does not substantially interfere with communication between nontest transmitters and receivers.
Inventors
- 👤 John S. Attinello
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-26 16:00
CPC Classifications
H; H04; H04B; H04B17/00; H04B17/0082; H04B17/0085
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
139 words
Apparatus for simulating interference between a test transmitter which emits test communication signals to communicate with at least one target test receiver over a transmission medium while permitting nontest transmitters which emit nontest communication signals to communicate with nontest receivers over said transmission medium, the apparatus comprising: control means (3) for transmitting control signals (C) that do not interfere with the test and nontest communication signals (S), the control signals transmitted over said transmission medium defining corresponding interference signals; and injector means ( 5) operatively associated with said at least one target test receiver (2) for generating interference signals defined by the control signals (C) and for applying the interference signals to said at least one target test receiver (2) to interfere with at least the test communication signals (S) that are received by the target test receiver (1).
Claim 2
Dependent Claim
139 words
Apparatus for simulating interference between a test transmitter which emits test communication signals to communicate with at least one target test receiver over a transmission medium while permitting nontest transmitters which emit nontest communication signals to communicate with nontest receivers over said transmission medium, the apparatus comprising: control means (3) for transmitting control signals (C) that do not interfere with the test and nontest communication signals (S), the control signals transmitted over said transmission medium defining corresponding interference signals; and injector means ( 5) operatively associated with said at least one target test receiver (2) for generating interference signals defined by the control signals (C) and for applying the interference signals to said at least one target test receiver (2) to interfere with at least the test communication signals (S) that are received by the target test receiver (1).
Claim 3
Dependent Claim
36 words
Apparatus according to claim 1, wherein said control means (3) includes means for transmitting control signals (C) having a bandwidth that is narrow in comparison to the bandwidth of said test and nontest communication signals (S).
Claim 4
Dependent Claim
36 words
Apparatus according to claim 1 or 2, wherein said control means (3) includes means for transmitting control signals (C) having a frequency that is approximately the same as the frequency of the defined interference signals (S).
Claim 5
Dependent Claim
23 words
Apparatus according to any preceding claim including switch means (6) for manually activating said control means (3) to transmit said control signals (C).
Claim 6
Dependent Claim
28 words
Apparatus according to any preceding claim including programmed switch means ( 7) for activating said control means (3) to transmit said control signals (C) in a programmed sequence.
Claim 7
Dependent Claim
30 words
Apparatus according to any preceding claim including repeater switch means (9) responsive to a test communications signal (S) for activating said control means (3) to transmit said control signals (C).
Claim 8
Dependent Claim
25 words
Apparatus according to any preceding claim wherein said control means includes means for generating a control signal modulated in accordance with a multi-frequency coded tone.
Claim 9
Dependent Claim
56 words
Apparatus according to any preceding claim wherein said injector means includes means (35) for receiving at least a portion of said control signals, a plurality of generators (47, 49, 51) for generating interference signals, and means (37) for decoding the received control signals and activating at least one of the generators to generate selected interference signals.
Claim 10
Dependent Claim
38 words
Apparatus according to claim 8, wherein said injector means includes range simulation means (57) for attenuating said selected interference signals in inverse relation to the relative magnitude of the control signals that are received by the injector means.
Claim 11
Dependent Claim
31 words
Apparatus according to claim 8 or 9 wherein said injector means includes pattern attenuation means (61) for variably attenuating said selected interference signals in accordance with a predetermined antenna scanning pattern.
Claim 12
Dependent Claim
59 words
Apparatus according to any preceding claim wherein said injector means includes delay means (65) responsive to at least a portion of said control signals (C) for delaying at least a portion of the test communication signals (S) received by said at least one target test receiver (29) and for applying the delayed signals to the target test receiver (29).
Claim 13
Dependent Claim
58 words
Apparatus according to any preceding claim wherein said injector means (5) includes means responsive to at least a portion of said control signals (C) for distorting at least a portion of the test communication signals (S) received by said at least one target test receiver (29) and for applying the distorted signals to the target test receiver (29).
Claim 14
Dependent Claim
53 words
Apparatus according to claim 11, wherein said at least one test transmitter (17) includes means (19) for emitting test communication signals for a radar apparatus and said at least one target test receiver (22) includes means for receiving the test communication signals of said test transmitter that are reflected from a target object.
Claim 15
Dependent Claim
72 words
Apparatus according to any preceding claim including, an antenna (31) for receiving said test communication signals (C) and said control signals (S), a first coupling means (33) for applying at least a portion of the control signals (C) and at least a portion of the test communication signals (S) to said injector means (5), and a second coupling means (69) for applying the interference signals of said injector means to said antenna.
Claim 16
Dependent Claim
15 words
Apparatus according to claim 14, wherein said first and second coupling means are directional couplers.
References Cited (Backward Citations)
No citation records indexed.
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