GB880566A - Test set for testing radio navigation equipment - Google Patents

Test set for testing radio navigation equipment

Info

Publication number
GB880566A
GB880566A GB19004/58A GB1900458A GB880566A GB 880566 A GB880566 A GB 880566A GB 19004/58 A GB19004/58 A GB 19004/58A GB 1900458 A GB1900458 A GB 1900458A GB 880566 A GB880566 A GB 880566A
Authority
GB
United Kingdom
Prior art keywords
pulses
sec
spaced
pulse
test set
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB19004/58A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
STC PLC
Original Assignee
Standard Telephone and Cables PLC
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Standard Telephone and Cables PLC filed Critical Standard Telephone and Cables PLC
Publication of GB880566A publication Critical patent/GB880566A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S1/00—Beacons or beacon systems transmitting signals having a characteristic or characteristics capable of being detected by non-directional receivers and defining directions, positions, or position lines fixed relatively to the beacon transmitters; Receivers co-operating therewith
    • G01S1/02—Beacons or beacon systems transmitting signals having a characteristic or characteristics capable of being detected by non-directional receivers and defining directions, positions, or position lines fixed relatively to the beacon transmitters; Receivers co-operating therewith using radio waves
    • G01S1/022—Means for monitoring or calibrating
    • G01S1/028—Simulation means, e.g. of beacon signals therefor

Abstract

880,566. Testing radio-navigation systems. STANDARD TELEPHONES & CABLES Ltd. June 13, 1958 [June 18, 1957], No. 19004/58. Drawings to Specification. Class 40(7). A test set for radio navigational equipment comprises means for generating pulses simulating the signals transmitted by a beacon such as TACAN and for amplitude modulating the pulses to simulate the effect of a rotating antenna pattern. The following test facilities are provided. (1) Identity tone signals consisting of 1350 pairs of pulses per second the pulses of a pair being spaced by 100 Á.sec. (2) Main reference signals consisting of 12 pulses spaced by 30 Á.sec. and having a repetition frequency of 15 c.p.s. (3) Auxiliary reference signals consisting of 6 pulses spaced by 24 Á.sec. and having a repetition frequency of 135 c.p.s. (4) Reply signals consisting of suitably delayed interrogation pulses to simulate the distance between the test set and the (mobile) equipment which transmits the interrogation pulses. All of the above pulse signals are combined into a single pulse train and for each pulse of the latter a second pulse is generated spaced therefrom by 12 Á.sec. to enable single random-wise pulses to be differentiated therefrom. The composite train of pairs of pulses is then amplitude modulated by a complex wave having a fundamental frequency of 15 c.p.s. and a harmonic of 135 c.p.s. and transmitted on a U.H.F. carrier wave from an aerial having a fixed radiation pattern.
GB19004/58A 1957-06-18 1958-06-13 Test set for testing radio navigation equipment Expired GB880566A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US880566XA 1957-06-18 1957-06-18

Publications (1)

Publication Number Publication Date
GB880566A true GB880566A (en) 1961-10-25

Family

ID=22209133

Family Applications (1)

Application Number Title Priority Date Filing Date
GB19004/58A Expired GB880566A (en) 1957-06-18 1958-06-13 Test set for testing radio navigation equipment

Country Status (1)

Country Link
GB (1) GB880566A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114295137A (en) * 2021-12-29 2022-04-08 天津光电通信技术有限公司 FPGA-based TACAN signal identification method and system

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114295137A (en) * 2021-12-29 2022-04-08 天津光电通信技术有限公司 FPGA-based TACAN signal identification method and system
CN114295137B (en) * 2021-12-29 2023-10-10 天津光电通信技术有限公司 Takang signal identification method and system based on FPGA

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