SU943621A1 - Method of measuring ground speed - Google Patents
Method of measuring ground speed Download PDFInfo
- Publication number
- SU943621A1 SU943621A1 SU802902794A SU2902794A SU943621A1 SU 943621 A1 SU943621 A1 SU 943621A1 SU 802902794 A SU802902794 A SU 802902794A SU 2902794 A SU2902794 A SU 2902794A SU 943621 A1 SU943621 A1 SU 943621A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- ground speed
- measuring ground
- measuring
- speed
- antennas
- Prior art date
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Description
1one
Изобретение относитс к радиолокационным измерени м и предназначено дл определени путевой скорости летательного аппарата относительно поверхности.The invention relates to radar measurements and is intended to determine the ground speed of an aircraft relative to the surface.
Известен способ измерени скорости , примененный в устройстве, в котором используютс передающа рупорна антенна и две приемные рупорные антенны, разнесенные в пространстве и расположенные вдоль вектора путевой скорости. Облучение земной поверхности дает рассе нное отражение подобное точечному рисунку. Принцип измерени скорости в известном устройстве основан на определении времени смещени рассе нного отражени на рассто ние, равное разносу приемных антенн,путем определени частоты на которой достигаетс равенство амплитуд суммарного и разностного сигналов на выходах квадратичного детектора, подключенного к каждой антенне Г 13 A known method for measuring speed is applied in a device in which a transmitting horn antenna and two receiving horn antennas spaced apart and located along the ground speed vector are used. Irradiation of the earth’s surface gives a diffuse reflection like a bitmap. The principle of measuring the speed in a known device is based on determining the time of displacement of the scattered reflection by a distance equal to the spacing of the receiving antennas, by determining the frequency at which the amplitudes of the total and difference signals at the outputs of the quadratic detector connected to each antenna are equal.
I Недостатком способа вл етс ис пользование трех антенн.I The disadvantage of the method is the use of three antennas.
Наиболее близким к предлагаемому вл етс способ измерени путевой скорости путем формировани и однолучевого излучени последовательности радиоимпульсов и стробировани участков, равноотсто щих от момента возникновени каждого импульса . Из амплитудных флюктуации этих The closest to the present invention is a method for measuring the traveling speed by forming and single-beam radiation a sequence of radio pulses and gating sections equal to the distance from the moment each pulse occurs. From the amplitude fluctuations of these
to участков выдел ют огибающую. По средней частоте изменени которой суд т об измер емом параметре 2.plots highlight the envelope. Based on the average frequency of change, the measured parameter 2 is judged.
Однако в известном способе результаты измерений завис т от вида However, in a known method, the measurement results depend on the type
ts отражающей поверхности, и необходимо проводить статистическую обработку результатов измерений при летных испытани х над различными видами ts of the reflecting surface, and it is necessary to carry out statistical processing of measurement results during flight tests on various types
20 отражающих поверхностей, что ограничивает практическое применение данного способа.20 reflective surfaces, which limits the practical application of this method.
Claims (2)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU802902794A SU943621A1 (en) | 1980-04-03 | 1980-04-03 | Method of measuring ground speed |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU802902794A SU943621A1 (en) | 1980-04-03 | 1980-04-03 | Method of measuring ground speed |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| SU943621A1 true SU943621A1 (en) | 1982-07-15 |
Family
ID=20886564
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SU802902794A SU943621A1 (en) | 1980-04-03 | 1980-04-03 | Method of measuring ground speed |
Country Status (1)
| Country | Link |
|---|---|
| SU (1) | SU943621A1 (en) |
-
1980
- 1980-04-03 SU SU802902794A patent/SU943621A1/en active
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