New-system ionized layer height indicator
An ionospheric altimeter and system technology, applied in the direction of radio wave measurement systems, instruments, measuring devices, etc., can solve the problems of deteriorating electromagnetic environment and large strays, and reduce out-of-band strays, reduce antenna costs, reduce The effect of a small footprint
Inactive Publication Date: 2017-05-31
中国电波传播研究所
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Problems solved by technology
In addition, the use of pulse phase encoding causes excessive out-of-band spurs and deteriorates the surrounding electromagnetic environment
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Embodiment 1
[0023] Example 1, such as figure 1 As shown, this embodiment discloses a new system ionospheric altimeter, the altimeter includes a shared antenna for transmitting and receiving, a fast transmitting and receiving switch, a receiving channel, a transmitting channel, a timer, a time system controller, a signal processing And the display and control terminal, power supply; among them, the fast transmitting and receiving switch switches the receiving and transmitting of the shared antenna for transmitting and receiving according to the timing signal of the timer. At the same time, the echo signal of the common antenna for sending and receiving is fed into the receiving channel; the timer generates various timing signals to control the altimeter to work synchronously according to a certain sequence; Timing for signal processing and display and control terminals; signal processing and display and control terminals are used to complete the echo signal processing and data display of t...
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The invention discloses a new-system ionized layer height indicator. The height indicator comprises a transmit-receive sharing antenna, a rapid transmit-receive conversion switch, a receiving channel, an emission channel, a timer, a timing system controller, a signal processing and display and control terminal and a power supply. The rapid transmit-receive conversion switch carries out receiving and emission switching of the transmit-receive sharing antenna according to a timing signal of the timer. During an emission state, a large power detection signal output by the emission channel accesses the transmit-receive sharing antenna. During a receiving state, an echo signal of the transmit-receive sharing antenna is fed into the receiving channel. The timing system controller provides a synchronous pulse per second and a high stable clock for the timer and carries out time service on the signal processing and display and control terminal through a network. By using the new-system ionized layer height indicator, the rapid transmit-receive conversion switch is used so that the receiving and emission channels share one orthogonal Delta antenna to carry out ionized-layer vertical detection; the detection signal adopts 20 bits of complementary codes; and during a detection signal generation process, a filtering technology is used to effectively reduce out-of-band stray.
Description
technical field [0001] The invention relates to the technical field of ionospheric wireless detection, in particular to a new-system ionospheric height measuring device in which transceivers share a set of antennas. Background technique [0002] The ionospheric altimeter transmits radio pulses whose frequency varies with time vertically upwards, receives the ionospheric reflection signals of these pulses at the same place, and measures the round-trip transmission delay of the radio waves, thereby obtaining the relationship curve between reflection height and frequency. It's called a frequency map. [0003] Currently widely used ionospheric altimeters mainly include IPS-71 of Australia, CADI of Canada, AIS-NGV of Italy, DPS-4D of the United States, CAS-DIS of the Chinese Academy of Sciences and TYC-1 developed by the Institute of Radio Communication of China. Grohe, etc., the above-mentioned altimeter transceiver antennas are placed separately, and the transmitting antenna a...
Claims
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IPC IPC(8): G01S13/08
CPCG01S13/08
Inventor 齐东玉孙广俊李强张成峰马怀宇谭帅徐小权高荣山宋征
Owner 中国电波传播研究所