Ote Sens. 2021, 13,get the reflected signal, plus the up-looking antenna is positioned symmetrically abov

Ote Sens. 2021, 13,get the reflected signal, plus the up-looking antenna is positioned symmetrically abov the down-looking antenna to get the direct signals. A recorder is connected to the a tennas by means of RF lines and it digitizes the signals. Additional, 2-bit genuine sampling is adopte The IF information with all the intermedia frequency of 15.58 MHz are sampled at a rate of 62 MH and collected on a laptop laptop or computer. A GNSS receiver and a 26 GHz radar altimeter a 7 of 15 placed near the reflector, providing the in-situ SSH throughout the experiment, as shown Figures 5b and 6c. The height variations involving the many gear are measure accurately by a Total Station. A software-defined receiver (SDR) is created to proce the IF information. During the experiment, the sea surface surface is calm and the scatter is coherent. Th the IF data. During the experiment, the sea is calm as well as the scatter is coherent. The code delay delay and phase delay measurements in the QZSS GEO satellite signals are bo code and phase delay measurements in the QZSS GEO satellite signals are both extracted. extracted.(a)(b)(c)Figure 5. The instruments in the experiment. (a) the dual antennas; (b) ring antenna for Figure 5. The instruments in the experiment. (a) the dual antennas; (b) the choke the choke ring antenna for positioning; (c) the radar positioning; (c) the radar altimeter. altimeter3.2. ��-Amanitin custom synthesis crosstalk Effect SimulationSimulation three.two. Crosstalk EffectBased on (1) andon (1) simulation is carried out to analyzeto analyze the the crosstalk crossta Based (9), a and (9), a simulation is carried out the effect of effect from the around the code delay measurements within the coastal condition. In order So as to simplify the simul on the code delay measurements inside the coastal situation. to simplify the simulation, L5 signal from QZSS GEO satellite is adopted to ensure to make sure high-precision code dela tion, L5 signal from QZSS GEO satellite is adopted high-precision code delay measurements, a long-termlong-term observation, and stable signal In addition, a far better a bett measurements, a observation, and stable signal intensity. intensity. Also, P7C3 manufacturer altimetry performance of L5 signal is anticipated due to the fact ofbecause ofbandwidth and high and hig altimetry efficiency of L5 signal is expected the wide the wide bandwidth transmission power, which can be useful to analyze the crosstalk. The code and phase path delay model is calculated working with the in-situ SSH, the precise ephemeris from the IGS, and the precise position on the reflector. The neighborhood waveform with a 2-chip-wide is generated by the correlation on the neighborhood L5 code. The regional waveform is then lagged with all the value in the code delay model to produce the waveform linked to A2 . The power waveforms connected with A2 and r c two Ac Ar cos() are also generated using exactly the same process. To determine the influence of the different parts around the code delay observations, three groups are settled to simulate the influence of crosstalk around the code delay measurements. Simulation I: A2 + A2 ; simulation r c II): A2 + 2 Ac Ar cos(); Simulation III: two: A2 + A2 + two Ac Ar cos(). r r c Pc Within the simulation, the energy ration PR determines the quantity of the crosstalk signal entering the direct antenna, exactly where Computer will be the energy of the crosstalk signal and PR is the energy with the reflected signal. When the energy ratio is 14 , a continuous bias involving the simulation and delay model in simulation I is discovered and shown in Figure 6a,b shows the outcomes of simulation I.